Dr Ian Farrer

PhD, MSci

Department of Electronic and Electrical Engineering

Senior Lecturer in Semiconductor Epitaxy

Semiconductor Materials and Devices Research Group

National Epitaxy Facility

Headshot of Ian Farrer
Profile picture of Headshot of Ian Farrer
i.farrer@sheffield.ac.uk
+44 114 2225860

Full contact details

Dr Ian Farrer
Department of Electronic and Electrical Engineering
Profile

After obtaining an MSci degree in Physics at the University of Cambridge I went on to pursue a PhD in the “Growth and Applications of Self Assembled Quantum Dots” in the Semiconductor Physics Group of Prof David Ritchie in the Cavendish Laboratory, Cambridge.

During this time I explored the use of Molecular Beam Epitaxy for the growth of semiconductor materials both for optical and electronic properties with particular highlights being the use of transistor devices containing layers of Quantum Dots as optical memories and later as single photon detectors.

After completing my PhD studies I continued in the same research group but now additionally working on the growth of GaAs/AlGaAs ultra-high mobility materials which are of fundamental importance to the study of electron-electron interactions at low temperatures.

These ultra-pure materials are also a key building block in one of the schemes proposed for quantum computation.

Self assembled quantum dots also have application in quantum cryptography and this is where a large part of my focus in the latter half of my time in Cambridge.

In particular leading the growth programme in a long and successful collaboration with Toshiba Research Europe.

This work looked at using quantum dots in single photon detector and emitter applications and resulted in the creation of the world’s first electrically driven entangled photon LED and subsequent demonstrations of quantum teleportation.

I moved to Sheffield in 2015 and have continued to work on high purity materials and quantum dot growth with a new focus on site controlled quantum dot growth which will be further enabled with the arrival of the Epitaxy Cluster Tool from DCA Instruments, Finland which is due for installation in June 2018.

My work also involves the growth of novel materials such as Zinc Nitride and Transition Metal Di-chalcogenides.

In addition my work also involves the study of growth processes via optical monitoring techniques including both reflectivity and band edge thermometry and I have extensive experience in X-ray Diffraction and Reflectivity techniques for analysing a wide range of thin film materials grown by many techniques.

I have published over 370 papers and have an h-index of 45 and am the organiser of the annual UK Molecular Beam Epitaxy meeting which offers an opportunity for researchers and industry to share experiences and research updates with the community.

Qualifications
  • PhD (Physics), University of Cambridge 2001
  • MSci (Experimental and Theoretical Physics), University of Cambridge 1997
Research interests
  • Self-assembled quantum dots and site controlled growth
  • Epitaxy of ultra-pure materials
  • Optical monitoring techniques during epitaxy
  • II-IV Nitride materials
  • Molecular Beam Epitaxy of 2D materials
  • Epitaxy of dissimilar materials by Van der Waals epitaxy or Interfacial Misfit Dislocations
Publications

Journal articles

Chapters

Conference proceedings papers

Working papers

  • Siegert C, Ghosh A, Pepper M, Farrer I & Ritchie DA () Observation of a two-dimensional spin-lattice in non-magnetic semiconductor heterostructures. View this article in WRRO RIS download Bibtex download

Datasets

Preprints

  • Jordan M, Androvitsaneas P, Clark RN, Trapalis A, Farrer I, Langbein W & Bennett AJ (2024) Probing Purcell enhancement and photon collection efficiency of InAs quantum dots at nodes of the cavity electric field, arXiv. RIS download Bibtex download
  • Delfanazari K, Li J, Xiong Y, Ma P, Puddy RK, Yi T, Farrer I, Komori S, Robinson JWA, Serra L , Ritchie DA et al (2023) Quantized conductance in split gate superconducting quantum point contacts with InGaAs semiconducting two-dimensional electron systems, arXiv. RIS download Bibtex download
  • Rendell MJ, Liles SD, Bladwell S, Srinivasan A, Klochan O, Farrer I, Ritchie DA, Sushkov OP & Hamilton AR (2023) Probing Fermi surface shifts with spin resolved transverse magnetic focussing, arXiv. RIS download Bibtex download
  • Whittaker CE, Isoniemi T, Lovett S, Walker PM, Kolodny S, Kozin V, Iorsh IV, Farrer I, Ritchie DA, Skolnick MS & Krizhanovskii DN (2023) Exciton-polaritons in GaAsbased slab waveguide photonic crystals, arXiv. RIS download Bibtex download
  • Delfanazari K, Li J, Ma P, Puddy RK, Yi T, Xiong Y, Farrer I, Komori S, Robinson J, Ritchie DA , Kelly MJ et al (2023) Large-scale on-chip integration of gate-voltage addressable hybrid superconductor-semiconductor quantum wells field effect nano-switch arrays, arXiv. RIS download Bibtex download
  • Schofield RC, Fu M, Clarke E, Farrer I, Trapalis A, Dhar HS, Mukherjee R, Heffernan J, Mintert F, Nyman RA & Oulton RF (2023) Bose-Einstein Condensation of Light in a Semiconductor Quantum Well Microcavity, arXiv. RIS download Bibtex download
  • Androvitsaneas P, Clark RN, Jordan M, Peach T, Thomas S, Shabbir S, Sobiesierski AD, Trapalis A, Farrer IA, Langbein WW & Bennett AJ (2023) Direct-write projection lithography of quantum dot micropillar single photon sources, arXiv. RIS download Bibtex download
  • Hudson K, Srinivasan A, Miserev D, Wang Q, Klochan O, Sushkov O, Farrer I, Ritchie D & Hamilton A (2022) Observation of oscillating $g$-factor anisotropy arising from strong crystal lattice anisotropy in GaAs spin-3/2 hole quantum point contacts, arXiv. RIS download Bibtex download
  • Fletcher JD, Park W, Ryu S, See P, Griffiths JP, Jones GAC, Farrer I, Ritchie DA, Sim H-S & Kataoka M (2022) Time-resolved Coulomb collision of single electrons, arXiv. RIS download Bibtex download
  • Rendell MJ, Liles SD, Srinivasan A, Klochan O, Farrer I, Ritchie DA & Hamilton AR (2022) Spin polarisation and spin dependent scattering of holes in transverse magnetic focussing, arXiv. RIS download Bibtex download
  • Rendell MJ, Liles SD, Srinivasan A, Klochan O, Farrer I, Ritchie DA & Hamilton AR (2022) Gate voltage dependent Rashba spin splitting in hole transverse magnetic focussing, arXiv. RIS download Bibtex download
  • Taktak I, Kapfer M, Nath J, Roulleau P, Acciai M, Splettstoesser J, Farrer I, Ritchie DA & Glattli DC (2022) Two-particle time-domain interferometry in the Fractional Quantum Hall Effect regime, arXiv. RIS download Bibtex download
  • Vianez PMT, Jin Y, Tan WK, Griffiths JP, Farrer I, Ritchie DA, Tsyplyatyev O & Ford CJB (2021) Decoupling of the many-body effects from the electron mass in GaAs by means of reduced dimensionality, arXiv. RIS download Bibtex download
  • Levitin LV, van der Vliet H, Theisen T, Dimitriadis S, Lucas M, Corcoles AD, Nyéki J, Casey AJ, Creeth G, Farrer I , Ritchie DA et al (2021) Cooling low-dimensional electron systems into the microkelvin regime, arXiv. RIS download Bibtex download
  • Kumar S, Pepper M, Montagu H, Ritchie D, Farrer I, Griffiths J & Jones G (2021) Engineering electron wavefunctions in asymmetrically confined quasi one-dimensional structures, arXiv. RIS download Bibtex download
  • Keser AC, Wang DQ, Klochan O, Ho DYH, Tkachenko OA, Tkachenko VA, Culcer D, Adam S, Farrer I, Ritchie DA , Sushkov OP et al (2021) Geometric control of universal hydrodynamic flow in a two dimensional electron fluid, arXiv. RIS download Bibtex download
  • Jin Y, Moreno M, Vianez PMT, Tan WK, Griffiths JP, Farrer I, Ritchie DA & Ford CJB (2021) Microscopic metallic air-bridge arrays for connecting quantum devices, arXiv. RIS download Bibtex download
  • Vianez PMT, Jin Y, Moreno M, Anirban AS, Anthore A, Tan WK, Griffiths JP, Farrer I, Ritchie DA, Schofield AJ , Tsyplyatyev O et al (2021) Observing separate spin and charge Fermi seas in a strongly correlated one-dimensional conductor, arXiv. RIS download Bibtex download
  • Shetty A, Sfigakis F, Mak WY, Gupta KD, Buonacorsi B, Tam MC, Kim HS, Farrer I, Croxall AF, Beere HE , Hamilton AR et al (2020) Effects of biased and unbiased illuminations on dopant-free GaAs/AlGaAs 2DEGs. RIS download Bibtex download
  • Srinivasan A, Farrer I, Ritchie DA & Hamilton AR (2020) Improving reproducibility of quantum devices with completely undoped architectures, arXiv. RIS download Bibtex download
  • Delfanazari K, Serra L, Ma P, Puddy RK, Yi T, Cao M, Gul Y, Farrer I, Ritchie DA, Joyce HJ , Kelly MJ et al (2020) Experimental evidence for topological phases in the magnetoconductance of 2DEG-based hybrid junctions, arXiv. RIS download Bibtex download
  • Yan C, Pepper M, See P, Farrer I, Ritchie D & Griffiths J (2020) Demonstration of electron focusing using electronic lenses in low-dimensional system, arXiv. RIS download Bibtex download
  • Müller JRA, Stevenson RM, Skiba-Szymanska J, Shooter G, Huwer J, Farrer I, Ritchie DA & Shields AJ (2020) Active reset of a radiative cascade for superequilibrium entangled photon generation, arXiv. RIS download Bibtex download
  • Mehrabad MJ, Foster AP, Dost R, Clarke E, Patil PK, Farrer I, Heffernan J, Skolnick MS & Wilson LR (2019) A Semiconductor Topological Photonic Ring Resonator, arXiv. RIS download Bibtex download
  • Chung Y, Hou H, Son S-K, Hsiao T-K, Nasir A, Rubino A, Griffiths JP, Farrer I, Ritchie DA & Ford CJB (2019) Quantised Charge Transport driven by a Surface Acoustic Wave in induced unipolar and bipolar junctions, arXiv. RIS download Bibtex download
  • Xiang Z-H, Huwer J, Skiba-Szymanska J, Stevenson RM, Ellis DJP, Farrer I, Ward MB, Ritchie DA & Shields AJ (2019) A tuneable telecom-wavelength entangled light emitting diode, arXiv. RIS download Bibtex download
  • Wells LM, Kalliakos S, Villa B, Ellis DJP, Stevenson RM, Bennett AJ, Farrer I, Ritchie DA & Shields AJ (2019) Photon phase shift at the few-photon level and optical switching by a quantum dot in a microcavity, arXiv. RIS download Bibtex download
  • Marcellina E, Srinivasan A, Nichele F, Stano P, Ritchie DA, Farrer I, Culcer D & Hamilton AR (2019) Non-linear spin filter for non-magnetic materials at zero magnetic field, arXiv. RIS download Bibtex download
  • Yan C, Pepper M, See P, Farrer I, Ritchie D & Griffiths J (2019) Thermoelectric property of a one dimensional channel in the presence of a transverse magnetic field, arXiv. RIS download Bibtex download
  • Croxall AF, Sfigakis F, Waldie J, Farrer I & Ritchie DA (2019) Orientation of hole quantum Hall nematic phases in an out-of-plane electric field, arXiv. RIS download Bibtex download
  • Fletcher JD, Johnson N, Locane E, See P, Griffiths JP, Farrer I, Ritchie DA, Brouwer PW, Kashcheyevs V & Kataoka M (2019) Continuous-Variable Tomography of Solitary Electrons, arXiv. RIS download Bibtex download
  • Jaliel G, Puddy RK, Sánchez R, Jordan AN, Sothmann B, Farrer I, Griffiths JP, Ritchie DA & Smith CG (2019) Experimental realization of a quantum dot energy harvester, arXiv. RIS download Bibtex download
  • Hsiao T-K, Rubino A, Chung Y, Son S-K, Hou H, Pedrós J, Nasir A, Éthier-Majcher G, Stanley MJ, Phillips RT , Mitchell TA et al (2019) Single-photon Emission from an Acoustically-driven Lateral Light-emitting Diode, arXiv. RIS download Bibtex download
  • Jin Y, Tsyplyatyev O, Moreno M, Anthore A, Tan WK, Griffiths JP, Farrer I, Ritchie DA, Glazman LI, Schofield AJ & Ford CJB (2018) Momentum-dependent power law measured in an interacting quantum wire beyond the Luttinger limit, arXiv. RIS download Bibtex download
  • Kumar S, Pepper M, Holmes SN, Montagu H, Gul Y, Ritchie DA & Farrer I (2018) Zero-Magnetic Field Fractional Quantum States, arXiv. RIS download Bibtex download
  • Schupp FJ, Vigneau F, Wen Y, Mavalankar A, Griffiths J, Jones GAC, Farrer I, Ritchie DA, Smith CG, Camenzind LC , Yu L et al (2018) Radio-frequency reflectometry of a quantum dot using an ultra-low-noise SQUID amplifier, arXiv. RIS download Bibtex download
  • Giblin SP, Kataoka M, Fletcher JD, See P, Janssen TJBM, Griffiths JP, Jones GAC, Farrer I & Ritchie DA (2018) Rectification in mesoscopic AC-gated semiconductor devices, arXiv. RIS download Bibtex download
  • Giblin SP, See P, Fletcher JD, Janssen TJBM, Griffiths JP, Jones GAC, Farrer I & Kataoka M (2018) Error detection in a tunable-barrier electron pump, arXiv. RIS download Bibtex download
  • Giblin SP, See P, Petrie A, Janssen TJBM, Farrer I, Griffiths JP, Jones GAC, Ritchie DA & Kataoka M (2018) High-resolution error detection in the capture process of a single-electron pump, arXiv. RIS download Bibtex download
  • Yan C, Kumar S, See P, Farrer I, Ritchie D, Griffiths JP, Jones GAC & Pepper M (2018) Magnetoresistance in an electronic cavity coupled to one-dimensional systems, arXiv. RIS download Bibtex download
  • Xiang Z-H, Huwer J, Stevenson RM, Skiba-Szymanska J, Ward MB, Farrer I, Ritchie DA & Shields AJ (2018) Long-term transmission of entangled photons from single quantum dot over deployed fiber, arXiv. RIS download Bibtex download
  • Yan C, Kumar S, Pepper M, See P, Farrer I, Ritchie D, Griffiths J & Jones G (2018) Incipient singlet-triplet states in a hybrid mesoscopic system, arXiv. RIS download Bibtex download
  • Marcellina E, Srinivasan A, Miserev D, Croxall A, Ritchie D, Farrer I, Sushkov O, Culcer D & Hamilton A (2018) Electrical control of the Zeeman spin splitting in two-dimensional hole systems, arXiv. RIS download Bibtex download
  • Hou H, Chung Y, Rughoobur G, Hsiao TK, Nasir A, Flewitt AJ, Griffiths JP, Farrer I, Ritchie DA & Ford CJB (2018) Experimental verification of electrostatic boundary conditions in gate-patterned quantum devices, arXiv. RIS download Bibtex download
  • Kapfer M, Roulleau P, Santin M, Farrer I, Ritchie DA & Glattli DC (2018) A Josephson frequency for fractionally charged anyons, arXiv. RIS download Bibtex download
  • Lee JP, Villa B, Bennett AJ, Stevenson RM, Ellis DJP, Farrer I, Ritchie DA & Shields AJ (2018) Towards a source of multi-photon entangled states for linear optical quantum computing, arXiv. RIS download Bibtex download
  • Ho S-C, Chang H-J, Chang C-H, Lo S-T, Creeth G, Kumar S, Farrer I, Ritchie D, Griffiths J, Jones G , Pepper M et al (2018) Imaging the zigzag Wigner crystal in confinement-tunable quantum wires, arXiv. RIS download Bibtex download
  • Lee JP, Wells LM, Villa B, Kalliakos S, Stevenson RM, Ellis DJP, Farrer I, Ritchie DA, Bennett AJ & Shields AJ (2018) Controllable photonic time-bin qubits from a quantum dot, arXiv. RIS download Bibtex download
  • Yan C, Kumar S, Thomas K, See P, Farrer I, Ritchie D, Griffiths J, Jones G & Pepper M (2018) Coherent Spin Amplification Using a Beam Splitter, arXiv. RIS download Bibtex download
  • Lo S-T, Chen C-H, Fan J-C, Smith LW, Creeth GL, Chang C-W, Pepper M, Griffiths JP, Farrer I, Beere HE , Jones GAC et al (2018) Controlled spatial separation of spins and coherent dynamics in spin-orbit-coupled nanostructures, arXiv. RIS download Bibtex download
  • Johnson N, Emary C, Ryu S, Sim H-S, See P, Fletcher JD, Griffiths JP, Jones GAC, Farrer I, Ritchie DA , Pepper M et al (2017) LO-phonon emission rate of hot electrons from an on-demand single-electron source in a GaAs/AlGaAs heterostructure, arXiv. RIS download Bibtex download
  • Yan C, Kumar S, Pepper M, See P, Farrer I, Ritchie D, Griffiths J & Jones G (2017) Temperature Dependence of Spin-Split Peaks in Transverse Electron Focusing, arXiv. RIS download Bibtex download
  • Yan C, Kumar S, Pepper M, See P, Farrer I, Ritchie D, Griffiths J & Jones G (2017) Interference Effects in a Tunable Quantum Point Contact Integrated with an Electronic Cavity, arXiv. RIS download Bibtex download
  • Yan C, Kumar S, Thomas K, Pepper M, See P, Farrer I, Ritchie D, Griffiths JP & Jones GAC (2017) Direct observation of exchange-driven spin interactions in one-dimensional system, arXiv. RIS download Bibtex download
  • Villa B, Bennett AJ, Ellis DJP, Lee JP, Skiba-Szymanska J, Mitchell TA, Griffiths JP, Farrer I, Ritchie DA, Ford CJB & Shields AJ (2017) Surface Acoustic wave modulation of a coherently driven quantum dot in a pillar microcavity, arXiv. RIS download Bibtex download
  • Huwer J, Felle M, Stevenson RM, Skiba-Szymanska J, Ward MB, Farrer I, Penty RV, Ritchie DA & Shields AJ (2017) Quantum-dot based telecom-wavelength quantum relay, arXiv. RIS download Bibtex download
  • Lee JP, Bennett AJ, Stevenson RM, Ellis DJP, Farrer I, Ritchie DA & Shields AJ (2017) Multi-dimensional photonic states from a quantum dot, arXiv. RIS download Bibtex download
  • Walker PM, Tinkler L, Royall B, Skryabin DV, Farrer I, Ritchie DA, Skolnick MS & Krizhanovskii DN (2017) Dark Solitons in Waveguide Polariton Fluids Shed Light on Interaction Constants, arXiv. RIS download Bibtex download
  • Yan C, Kumar S, Pepper M, See P, Farrer I, Ritchie D, Griffiths J & Jones G (2017) Fano Resonance in a cavity-reflector hybrid system, arXiv. RIS download Bibtex download
  • Lee JP, Murray E, Bennett AJ, Ellis DJP, Dangel C, Farrer I, Spencer P, Ritchie DA & Shields AJ (2017) Electrically driven and electrically tunable quantum light sources, arXiv. RIS download Bibtex download
  • Wang DQ, Klochan O, Hung J-T, Culcer D, Farrer I, Ritchie DA & Hamilton AR (2016) Anisotropic Pauli Spin Blockade of Holes in a GaAs Double Quantum Dot, arXiv. RIS download Bibtex download
  • Miserev DS, Srinivasan A, Tkachenko OA, Tkachenko VA, Farrer I, Ritchie DA, Hamilton AR & Sushkov OP (2016) Mechanisms for strong anisotropy of in-plane g-factors in hole based quantum point contacts, arXiv. RIS download Bibtex download
  • de Cumis US, Waldie J, Croxall AF, Taneja D, Llandro J, Farrer I, Beere HE & Ritchie DA (2016) A complete laboratory for transport studies of electron-hole interactions in GaAs/AlGaAs systems, arXiv. RIS download Bibtex download
  • Johnson N, Fletcher JD, Humphreys DA, See P, Griffiths JP, Jones GAC, Farrer I, Ritchie DA, Pepper M, Janssen TJBM & Kataoka M (2016) Ultrafast Voltage Sampling using Single-Electron Wavepackets, arXiv. RIS download Bibtex download
  • Skiba-Szymanska J, Stevenson RM, Varnava C, Felle M, Huwer J, Müller T, Bennett AJ, Lee JP, Farrer I, Krysa A , Spencer P et al (2016) Universal growth scheme for entanglement-ready quantum dots, arXiv. RIS download Bibtex download
  • Al-Khuzheyri R, Dada AC, Huwer J, Santana TS, Szymanska JS, Felle M, Ward MB, Stevenson RM, Farrer I, Tanner MG , Hadfield RH et al (2016) Resonance fluorescence from a telecom-wavelength quantum dot, arXiv. RIS download Bibtex download
  • Bennett AJ, Lee JP, Ellis DJP, Farrer I, Ritchie DA & Shields AJ (2016) A semiconductor photon-sorter, arXiv. RIS download Bibtex download
  • Kataoka M, Johnson N, Emary C, See P, Griffiths JP, Jones GAC, Farrer I, Ritchie DA, Pepper M & Janssen TJBM (2015) Time-of-Flight Measurements of Single-Electron Wave Packets in Quantum-Hall Edge States, arXiv. RIS download Bibtex download
  • Zheng B, Croxall AF, Waldie J, Gupta KD, Sfigakis F, Farrer I, Beere HE & Ritchie DA (2015) Switching between attractive and repulsive Coulomb-interaction-mediated drag in an ambipolar GaAs/AlGaAs bilayer device, arXiv. RIS download Bibtex download
  • Moreno M, Ford CJB, Jin Y, Griffiths JP, Farrer I, Jones GAC, Ritchie DA, Tsyplyatyev O & Schofield AJ (2015) Nonlinear spectra of spinons and holons in short GaAs quantum wires, arXiv. RIS download Bibtex download
  • Ares N, Schupp FJ, Mavalankar A, Rogers G, Griffiths J, Jones GAC, Farrer I, Ritchie DA, Smith CG, Cottet A , Briggs GAD et al (2015) Sensitive radio-frequency measurements of a quantum dot by tuning to perfect impedance matching, arXiv. RIS download Bibtex download
  • Tsyplyatyev O, Schofield AJ, Jin Y, Moreno M, Tan WK, Anirban AS, Ford CJB, Griffiths JP, Farrer I, Jones GAC & Ritchie DA (2015) Nature of the many-body excitations in a quantum wire: theory and experiment, arXiv. RIS download Bibtex download
  • Lee JP, Bennett AJ, Skiba-Szymanska J, Ellis DJP, Farrer I, Ritchie DA & Shields AJ (2015) Ramsey Interference in a Multi-level Quantum System, arXiv. RIS download Bibtex download
  • Smith LW, Al-Taie H, Lesage AAJ, Thomas KJ, Sfigakis F, See P, Griffiths JP, Farrer I, Jones GAC, Ritchie DA , Kelly MJ et al (2015) The effect of split gate size on the electrostatic potential and 0.7 anomaly within one-dimensional quantum wires on a modulation doped GaAs/AlGaAs heterostructure, arXiv. RIS download Bibtex download
  • Bennett AJ, Lee JP, Ellis DJP, Meany T, Murray E, Floether F, Griffths JP, Farrer I, Ritchie DA & Shields AJ (2015) Cavity-enhanced coherent light scattering from a quantum dot, arXiv. RIS download Bibtex download
  • Cao Y, Bennett AJ, Farrer I, Ritchie DA & Shields AJ (2015) Polarization correlated photons from a positively charged quantum dot, arXiv. RIS download Bibtex download
  • Pooley MA, Bennett AJ, Stevenson RM, Shields AJ, Farrer I & Ritchie DA (2015) Energy-Tunable Quantum Dot with Minimal Fine Structure Created by Using Simultaneous Electric and Magnetic Fields, arXiv. RIS download Bibtex download
  • Pooley MA, Bennett AJ, Farrer I, Ritchie DA & Shields AJ (2015) Engineering quantum dots for electrical control of the fine structure splitting, arXiv. RIS download Bibtex download
  • Cao Y, Bennett AJ, Ellis DJP, Farrer I, Ritchie DA & Shields AJ (2015) Ultrafast electrical control of a resonantly driven single photon source, arXiv. RIS download Bibtex download
  • Felle M, Huwer J, Stevenson RM, Skiba-Szymanska J, Ward MB, Farrer I, Penty RV, Ritchie DA & Shields AJ (2015) Interference with a Quantum Dot Single-Photon Source and a Laser at Telecom Wavelength, arXiv. RIS download Bibtex download
  • Murray E, Ellis DP, Meany T, Floether FF, Lee JP, Griffiths JP, Jones GAC, Farrer I, Ritchie DA, Bennett AJ & Shields AJ (2015) Quantum photonics hybrid integration platform, arXiv. RIS download Bibtex download
  • Chuang P, Ho S-C, Smith LW, Sfigakis F, Pepper M, Chen C-H, Fan J-C, Griffiths JP, Farrer I, Beere HE , Jones GAC et al (2015) All-electric all-semiconductor spin field effect transistors, arXiv. RIS download Bibtex download
  • Waeber AM, Hopkinson M, Farrer I, Ritchie DA, Nilsson J, Stevenson RM, Bennett AJ, Shields AJ, Burkard G, Tartakovskii AI , Skolnick MS et al (2015) Few-second-long correlation times in a quantum dot nuclear spin bath probed by frequency-comb NMR spectroscopy, arXiv. RIS download Bibtex download
  • Varnava C, Stevenson RM, Nilsson J, Skiba-Szymanska J, Dzurňák B, Lucamarini M, Penty RV, Farrer I, Ritchie DA & Shields AJ (2015) An entangled-LED driven quantum relay over 1 km, arXiv. RIS download Bibtex download
  • Billiald J, Backes D, König J, Farrer I, Ritchie D & Narayan V (2015) Determining energy relaxation length scales in two-dimensional electron gases, arXiv. RIS download Bibtex download
  • Waldie J, See P, Kashcheyevs V, Griffiths JP, Farrer I, Jones GAC, Ritchie DA, Janssen TJBM & Kataoka M (2015) Measurement and control of electron wave packets from a single-electron source, arXiv. RIS download Bibtex download
  • Kumar S, Thomas KJ, Smith LW, Pepper M, Creeth GL, Farrer I, Ritchie D, Jones G & Griffiths J (2014) Many-body effects in a quasi-one-dimensional electron gas, arXiv. RIS download Bibtex download
  • Tinkler L, Walker PM, Skryabin DV, Yulin A, Royall B, Farrer I, Ritchie DA, Krizhanovskii DN & Skolnick MS (2014) Ultra-Low-Power Hybrid Light-Matter Solitons, arXiv. RIS download Bibtex download
  • Tsyplyatyev O, Schofield AJ, Jin Y, Moreno M, Tan WK, Ford CJB, Griffiths JP, Farrer I, Jones GAC & Ritchie DA (2014) Hierarchy of modes in an interacting system, arXiv. RIS download Bibtex download
  • Puddy RK, Smith LW, Al-Taie H, Chong CH, Farrer I, Griffiths JP, Ritchie DA, Kelly MJ, Pepper M & Smith CG (2014) Multiplexed Charge-locking Device for Large Arrays of Quantum Devices, arXiv. RIS download Bibtex download
  • Kalliakos S, Brody Y, Schwagmann A, Bennett AJ, Ward MB, Ellis DJP, Skiba-Szymanska J, Farrer I, Griffiths JP, Jones GAC , Ritchie DA et al (2014) In-plane emission of indistinguishable photons generated by an integrated quantum emitter, arXiv. RIS download Bibtex download
  • Jamil A, Skiba-Szymanska J, Kalliakos S, Schwagmann A, Ward MB, Brody Y, Ellis DJP, Farrer I, Griffiths JP, Jones GAC , Ritchie DA et al (2014) On-chip generation and guiding of quantum light from a site-controlled quantum dot, arXiv. RIS download Bibtex download
  • Stevenson RM, Nilsson J, Bennett AJ, Skiba-Szymanska J, Farrer I, Ritchie DA & Shields AJ (2013) Heterogeneous teleportation with laser and quantum light sources, arXiv. RIS download Bibtex download
  • Nilsson J, Bouet L, Bennett AJ, Amand T, Stevenson RM, Farrer I, Ritchie DA, Kunz S, Marie X, Shields AJ & Urbaszek B (2013) Voltage control of electron-nuclear spin correlation time in a single quantum dot, arXiv. RIS download Bibtex download
  • Mavalankar A, Chorley SJ, Griffiths J, Jones GAC, Farrer I, Ritchie DA & Smith CG (2013) A non-invasive electron thermometer based on charge sensing of a quantum dot, arXiv. RIS download Bibtex download
  • Bennett AJ, Pooley MA, Cao Y, Sköld N, Farrer I, Ritchie DA & Shields AJ (2013) Voltage tunability of single spin-states in a quantum dot, arXiv. RIS download Bibtex download
  • Fletcher JD, Kataoka M, Howe H, Pepper M, See P, Giblin SP, Griffiths JP, Jones GAC, Farrer I, Ritchie DA & Janssen TJBM (2012) Clock-controlled emission of single-electron wavepackets in a solid-state circuit, arXiv. RIS download Bibtex download
  • Chepelianskii AD, Laidet J, Farrer I, Ritchie DA, Kono K & Bouchiat H (2012) Quantized escape and formation of edge channels at high Landau levels, arXiv. RIS download Bibtex download
  • Burke AM, Klochan O, Farrer I, Ritchie DA, Hamilton AR & Micolich AP (2012) Extreme sensitivity of the spin-splitting and 0.7 anomaly to confining potential in one-dimensional nanoelectronic devices, arXiv. RIS download Bibtex download
  • Aamir MA, Goswami S, Baenninger M, Tripathi V, Pepper M, Farrer I, Ritchie DA & Ghosh A (2012) Colossal non-saturating linear magnetoresistance in two-dimensional electron systems at a GaAs/AlGaAs heterointerface, arXiv. RIS download Bibtex download
  • Pooley MA, Ellis DJP, Patel RB, Bennett AJ, Chan KHA, Farrer I, Ritchie DA & Shields AJ (2012) Controlled-NOT gate operating with single photons, arXiv. RIS download Bibtex download
  • See AM, Pilgrim I, Scannell BC, Montgomery RD, Klochan O, Burke AM, Aagesen M, Lindelof PE, Farrer I, Ritchie DA , Taylor RP et al (2012) The Impact of Small-Angle Scattering on Ballistic Transport in Quantum Dots, arXiv. RIS download Bibtex download
  • Bennett AJ, Pooley MA, Stevenson RM, Farrer I, Ritchie DA & Shields AJ (2012) Free induction decay of a superposition stored in a quantum dot, arXiv. RIS download Bibtex download
  • Bennett AJ, Pooley MA, Stevenson RM, Ward MB, Patel RB, de la Giroday AB, Sköld N, Farrer I, Nicoll CA, Ritchie DA & Shields AJ (2012) Electric-field-induced coherent coupling of the exciton states in a single quantum dot, arXiv. RIS download Bibtex download
  • Chen T-M, Pepper M, Farrer I, Jones GAC & Ritchie DA (2012) All-electrical injection and detection of a spin polarized current using 1D conductors, arXiv. RIS download Bibtex download
  • Goswami S, Aamir MA, Siegert C, Pepper M, Farrer I, Ritchie DA & Ghosh A (2012) Transport Through an Electrostatically Defined Quantum Dot Lattice in a Two-Dimensional Electron Gas, arXiv. RIS download Bibtex download
  • Schwagmann A, Kalliakos S, Farrer I, Griffiths JP, Jones GAC, Ritchie DA & Shields AJ (2012) On-chip single photon emission from an integrated semiconductor quantum dot into a photonic crystal waveguide, arXiv. RIS download Bibtex download
  • Giblin SP, Kataoka M, Fletcher JD, See P, Janssen TJBM, Griffiths JP, Jones GAC, Farrer I & Ritchie DA (2012) Towards a quantum representation of the ampere using single electron pumps, arXiv. RIS download Bibtex download
  • Mak WY, Sfigakis F, Gupta KD, Klochan O, Beere HE, Farrer I, Griffiths JP, Jones GAC, Hamilton AR & Ritchie DA (2011) Ultra-shallow quantum dots in an undoped GaAs/AlGaAs 2D electron gas, arXiv. RIS download Bibtex download
  • Gupta KD, Croxall AF, Mak WY, Beere HE, Nicoll CA, Farrer I, Sfigakis F & Ritchie DA (2011) Linear non-hysteretic gating of a very high density 2DEG in an undoped metal-semiconductor-metal sandwich structure, arXiv. RIS download Bibtex download
  • Smith LW, Hamilton AR, Thomas KJ, Pepper M, Farrer I, Griffiths JP, Jones GAC & Ritchie DA (2011) Compressibility measurements of quasi-one-dimensional quantum wires, arXiv. RIS download Bibtex download
  • McNeil RPG, Kataoka M, Ford CJB, Barnes CHW, Anderson D, Jones GAC, Farrer I & Ritchie DA (2011) On-demand single-electron transfer between distant quantum dots, arXiv. RIS download Bibtex download
  • Scannell BC, Pilgrim I, See AM, Montgomery RD, Morse PK, Fairbanks MS, Marlow CA, Linke H, Farrer I, Ritchie DA , Hamilton AR et al (2011) Probing the Sensitivity of Electron Wave Interference to Disorder-Induced Scattering in Solid-State Devices, arXiv. RIS download Bibtex download
  • de la Giroday AB, Skold N, Stevenson RM, Farrer I, Ritchie DA & Shields AJ (2011) Exciton-spin memory with a semiconductor quantum dot molecule, arXiv. RIS download Bibtex download
  • Stevenson RM, Salter CL, de la Giroday AB, Farrer IA, Nicoll CA, Ritchie DA & Shields AJ (2011) Coherent entangled light generated by quantum dots in the presence of nuclear magnetic fields, arXiv. RIS download Bibtex download
  • Chepelianskii AD, Laidet J, Farrer I, Beere HE, Ritchie DA & Bouchiat H (2011) Enhancement of edge channel transport by a low frequency irradiation, arXiv. RIS download Bibtex download
  • Goswami S, Siegert C, Pepper M, Farrer I, Ritchie DA & Ghosh A (2010) Signatures of an Anomalous Nernst Effect in a Mesoscopic Two-Dimensional Electron System, arXiv. RIS download Bibtex download
  • de la Giroday AB, Bennett AJ, Pooley MA, Stevenson RM, Skold N, Patel RB, Farrer I, Ritchie DA & Shields AJ (2010) All-electrical coherent control of the exciton states in a single quantum dot, arXiv. RIS download Bibtex download
  • Bennett AJ, Patel RB, Skiba-Szymanska J, Nicoll CA, Farrer I, Ritchie DA & Shields AJ (2010) Giant Stark effect in the emission of single semiconductor quantum dots, arXiv. RIS download Bibtex download
  • Goswami S, Siegert C, Shamim S, Pepper M, Farrer I, Ritchie DA & Ghosh A (2010) Thermoelectric Properties of Electrostatically Tunable Antidot Lattices, arXiv. RIS download Bibtex download
  • Chen T-M, Graham AC, Pepper M, Farrer I, Anderson D, Jones GAC & Ritchie DA (2010) Direct observation of non-equilibrium spin population in quasi-one-dimensional nanostructures, arXiv. RIS download Bibtex download
  • Mak WY, Gupta KD, Beere HE, Farrer I, Sfigakis F & Ritchie DA (2010) Distinguishing impurity concentrations in GaAs and AlGaAs, using very shallow undoped heterostructures, arXiv. RIS download Bibtex download
  • Koushik R, Baenninger M, Narayan V, Mukerjee S, Pepper M, Farrer I, Ritchie DA & Ghosh A (2010) Evidence of gate-tunable topological excitations in two-dimensional electron systems, arXiv. RIS download Bibtex download
  • Jompol Y, Ford CJB, Griffiths JP, Farrer I, Jones GAC, Anderson D, Ritchie DA, Silk TW & Schofield AJ (2010) Probing spin-charge separation in a Tomonaga-Luttinger liquid, arXiv. RIS download Bibtex download
  • Patel RB, Bennett AJ, Farrer I, Nicoll CA, Ritchie DA & Shields AJ (2009) Tunable Indistinguishable Photons From Remote Quantum Dots, arXiv. RIS download Bibtex download
  • Smith LW, Hew WK, Thomas KJ, Pepper M, Farrer I, Anderson D, Jones GAC & Ritchie DA (2009) Row coupling in an interacting quasi-one-dimensional quantum wire investigated using transport measurements, arXiv. RIS download Bibtex download
  • Hew WK, Thomas KJ, Pepper M, Farrer I, Anderson D, Jones GAC & Ritchie DA (2009) Incipient Formation of an Electron Lattice in a Weakly-Confined Quantum Wire, arXiv. RIS download Bibtex download
  • Cassidy MC, Dzurak AS, Clark RG, Petersson KD, Farrer I, Ritchie DA & Smith CG (2009) Single Shot Charge Detection Using A Radio-Frequency Quantum Point Contact, arXiv. RIS download Bibtex download
  • Goswami S, Siegert C, Baenninger M, Ghosh A, Pepper M, Farrer I & Ritchie DA (2009) Highly enhanced thermopower in two-dimensional electron systems at milliKelvin temperatures, arXiv. RIS download Bibtex download
  • Chen T-M, Graham AC, Pepper M, Farrer I & Ritchie DA (2009) Non-Kondo zero-bias anomaly in quantum wires, arXiv. RIS download Bibtex download
  • Sfigakis F, Ford CJB, Pepper M, Ritchie DA, Farrer I, Simmons MY & Maude D (2009) Kondo physics versus spin gap physics in fully spin-split quantum wires, arXiv. RIS download Bibtex download
  • Croxall AF, Gupta KD, Nicoll CA, Beere HE, Farrer I, Ritchie DA & Pepper M (2008) Possible effect of collective modes in zero magnetic field transport in an electron-hole bilayer, arXiv. RIS download Bibtex download
  • Baenninger M, Ghosh A, Pepper M, Beere HE, Farrer I & Ritchie DA (2008) Magnetic Field Induced Instabilities in Localised Two-Dimensional Electron Systems, arXiv. RIS download Bibtex download
  • Sarkozy S, Sfigakis F, Gupta KD, Farrer I, Ritchie DA, Jones GAC & Pepper M (2008) On the Zero-Bias Anomaly in Quantum Wires, arXiv. RIS download Bibtex download
  • Hew WK, Thomas KJ, Pepper M, Farrer I, Anderson D, Jones GAC & Ritchie DA (2008) Spin-Incoherent Transport in Quantum Wires, arXiv. RIS download Bibtex download
  • Sarkozy S, Gupta KD, Siegert C, Ghosh A, Pepper M, Farrer I, Beere HE, Ritchie DA & Jones GAC (2008) Low Temperature Transport in Undoped Mesoscopic Structures, arXiv. RIS download Bibtex download
  • Croxall AF, Gupta KD, Nicoll CA, Thangaraj M, Beere HE, Farrer I, Ritchie DA & Pepper M (2008) Anomalous Coulomb drag in electron-hole bilayers, arXiv. RIS download Bibtex download
  • Croxall AF, Gupta KD, Nicoll CA, Thangaraj M, Farrer I, Ritchie DA & Pepper M (2008) Patterned backgating using single-sided mask aligners: application to density-matched electron-hole bilayers, arXiv. RIS download Bibtex download
  • Leylanda WJH, Harley RT, Henini M, Shields AJ, Farrer I & Ritchie DA (2008) Energy-Dependent Electron-Electron Scattering and Spin Dynamics in a Two Dimensional Electron Gas, arXiv. RIS download Bibtex download
  • Baenninger M, Ghosh A, Pepper M, Beere HE, Farrer I & Ritchie DA (2007) Low-Temperature Collapse of Electron Localisation in Two Dimensions, arXiv. RIS download Bibtex download
  • Siegert C, Ghosh A, Pepper M, Farrer I, Ritchie DA, Anderson D & Jones GAC (2007) Field-tunable magnetic phases in a semiconductor-based two-dimensional Kondo lattice, arXiv. RIS download Bibtex download
  • Siegert C, Ghosh A, Pepper M, Farrer I, Ritchie DA, Anderson D & Jones GAC (2007) Sensitivity of the magnetic state of a spin lattice on itinerant electron orbital phase, arXiv. RIS download Bibtex download
  • Bennett AJ, Ellis DJP, Shields AJ, Atkinson P, Farrer I & Ritchie DA (2007) Observation of the Purcell effect in high-index-contrast micropillar, arXiv. RIS download Bibtex download
  • Astley MR, Kataoka M, Ford CJB, Barnes CHW, Anderson D, Jones GAC, Farrer I, Ritchie DA & Pepper M (2007) Energy-dependent tunnelling from few-electron dynamic quantum dots, arXiv. RIS download Bibtex download
  • Jompol Y, Ford CJB, Farrer I, Jones GAC, Anderson D, Ritchie DA, Silk TW & Schofield AJ (2007) Probing e-e interactions in a periodic array of GaAs quantum wires, arXiv. RIS download Bibtex download
  • Leyland WJH, Harley RT, Henini M, Taylor D, Shields AJ, Farrer I & Ritchie DA (2007) Oscillatory D'yakonov-Perel' spin dynamics in two dimensional electron gases, arXiv. RIS download Bibtex download
  • Baenninger M, Ghosh A, Pepper M, Beere HE, Farrer I, Atkinson P & Ritchie DA (2007) Quantisation of Hopping Magnetoresistance Prefactor in Strongly Correlated Two-Dimensional Electron Systems, arXiv. RIS download Bibtex download
  • Rushforth AW, Smith CG, Farrer I, Ritchie DA, Jones GAC, Anderson D & Pepper M (2006) Fano effect and Kondo effect in quantum dots formed in strongly coupled quantum wells, arXiv. RIS download Bibtex download
  • Stevenson RM, Young RJ, See P, Gevaux DG, Cooper K, Atkinson P, Farrer I, Ritchie DA & Shields AJ (2006) Magnetic-field-induced reduction of the exciton polarization splitting in InAs quantum dots, arXiv. RIS download Bibtex download
  • Baenninger M, Ghosh A, Pepper M, Beere HE, Farrer I, Atkinson P & Ritchie DA (2005) Local transport in a disorder-stabilized correlated insulating phase, arXiv. RIS download Bibtex download
  • Hang DR, Dunford RB, Kim G-H, Yeh HD, Huang CF, Ritchie DA, Farrer I, Zhang YW, Liang C-T & Chang YH (2005) Effects of Zeeman spin splitting on the modular symmetry in the quantum Hall effect, arXiv. RIS download Bibtex download
  • Ghosh A, Wright M, Siegert C, Pepper M, Farrer I, Ford C & Ritchie D (2005) Zero-bias anomaly and Kondo-assisted quasi-ballistic 2D transport, arXiv. RIS download Bibtex download
  • Sawkey DL, Thomas KJ, Pepper M, Tripathi V, Khmelnitskii DE, Graham AC, Farrer I & Ritchie DA (2005) Hyperfine effects in quantum wires, arXiv. RIS download Bibtex download
  • Pingue P, Piazza V, Beltram F, Farrer I, Ritchie DA & Pepper M (2004) Coulomb-Blockade directional coupler, arXiv. RIS download Bibtex download
  • Thomas K, Sawkey D, Pepper M, Tribe W, Farrer I, Simmons M & Ritchie D (2004) Unusual conductance collapse in one-dimensional quantum structures, arXiv. RIS download Bibtex download
  • Crook R, Smith CG, Graham AC, Farrer I, Beere HE & Ritchie DA (2003) Imaging Fractal Conductance Fluctuations and Scarred Wave Functions in a Quantum Billiard, arXiv. RIS download Bibtex download
  • Taktak I, Kapfer M, Nath J, Roulleau P, Acciai M, Splettstoesser J, Farrer I, Ritchie D & Glattli D () Two-particle time-domain interferometry in the Fractional Quantum Hall Effect regime., Research Square Platform LLC. RIS download Bibtex download
Teaching activities
  • EEE6212 Semiconductor Materials
Professional activities and memberships
  • Senior Lecturer in Semiconductor Epitaxy and Materials
  • Departmental Plagiarism Officer
  • Pump Priming Scheme Coordinator for the EPSRC National Epitaxy Facility
  • Organiser of the annual UK Molecular Beam Epitaxy Meeting