Dr Earl Campbell

Photo of Earl Campbell

Senior Research Fellow

Contact details

Group web pages

Inorganic Semiconductors Group

Low Dimensional Structures & Devices Research Group

Personal web page



The quintessentially quantum features of nature are superposition and entanglement of quantum states. I am interested in how these properties can be exploited to realise practical quantum technologies with capabilities beyond those allowed by classical, pre-20th century understanding of physics. See the research tab for more information. My research team has one postdoc (Mark Howard) and one PhD student (Luke Heyfron).

Research Interests Keywords

Architectures for fault-tolerant quantum computing, Topological error correcting codes, Magic states, Gate synthesis, Majorana fermions and anyonic quantum computing, Non-locality and foundations of quantum mechanics, Qudit quantum computation.


Physics & Philosophy MSc (2001-2005, Bristol University)
Quantum computing PhD (2005-2008, Oxford University)

Academic career

Research Fellow funded by Royal Commission of Great Exhibition of 1851 (2008-2010, University College London)
Research Associate (2010-2013, Potsdam University and Frei University Berlin, Germany)
Research Associate (2014-2015, University of Sheffield)
EPSRC early career Research Fellow (2015-, University of Sheffield)

Professional activities

Active member of EPSRC Peer Review College.
Institute of Physics QQQ (Quantum Optics, Quantum Information and Quantum Control) group Committee.
Organiser of FTQT2016 (Fault-tolerant quantum technologies) workshop in Benasque, Spain.


The central question behind my research programme is 'What are the optimal blue-prints for large-scale, reliable quantum technologies?'. My main focus is fault-tolerance of quantum computation. My group designs protocols and software needed to operate future quantum computers, ensuring they would work reliably despite noise and decoherence. This includes development of error correction codes and decoders, design of magic state factories and compilation of algorithms into machine level commands. Magic state factories determine the processing speed of a quantum computers, so can be considered analogous to the CPU of conventional devices.

Research funding (major awards):

EPSRC early career fellow project "Towards fault-tolerant quantum computing with minimal resources." EP/M024261/1 value: £675,867
Royal Commission of Great Exhibition of 1851 fellowship funding. value: ~£100,000


PHY101 Academic tutor
3rd and 4th year project supervisor


An full list of arXiv preprints can be found at http://arxiv.org/a/campbell_e_2

Selected publications:

Cellular-automaton decoders for topological quantum memories, Michael Herold, Earl T Campbell, Jens Eisert & Michael J Kastoryano, Nature Partner Journal: Quantum Information, (2015)

Enhanced fault-tolerant quantum computing in d-level systems, Earl T Campbell, Physical Review Letters, (23), 230501 (2014)

Renormalising entanglement distillation, Stephan Waeldchen, Janina Gertis, Earl T. Campbell, Jens Eisert. Phys. Rev. Lett, 116, 020502 (2016)

Fast decoders for qudit topological codes, Hussain Anwar, Ben Brown, Earl T Campbell, Dan Browne. New Journal of Physics, 16, 6, 063038

Magic-State Distillation in All Prime Dimensions Using Quantum Reed-Muller Codes, Earl T Campbell, H Anwar, DE Browne, Physical Review X, 2, 041021 (2012)

Measurement-based entanglement under conditions of extreme photon loss, Earl T Campbell, SC Benjamin, Physical review letters, 101, (13), 130502