Stephen Barnett
FRS, FRSE, FOSA, Professor of Quantum Optics
Stephen Barnett graduated with a BSc in physics from Imperial College London in 1982 and stayed at IC to study for his PhD under the supervision of Peter Knight, graduating in 1985. He held personal Research Fellowships at Imperial College, Harwell and Wolfson College Oxford and at Somerville College Oxford, where he taught Engineering Science. After a year as a Lecturer at Kings College London he moved to Strathclyde in 1991 as a Royal Society of Edinburgh/Scottish Office Education Department Research Fellow. He was appointed as a Senior Lecturer and then Reader in 1994 before being promoted to Professor in 1996. He is best known for his work, with David Pegg, on the quantum phase operator, work for which he was awarded the Maxwell Medal and Prize by the Institute of Physics in 1994. He was elected a Fellow of the Royal Society of Edinburgh in 1996 and a Fellow of the Royal Society in 2006. He is currently a recipient of a Royal Society - Wolfson Merit Award and was awarded the James Scott Prize Lectureship by the Royal Society of Edinburgh in 2007.
| e: steve 
phys.strath.ac.uk | t: 0141 548 3457 | u: http://cnqo.phys.strath.ac.uk/
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Research
Quantum optics is the study of quantum effects in the interaction between light and matter. It encompasses the fields of laser physics and nonlinear optics and has provided some of the most subtle tests of quantum theory. Today its techniques and ideas are very much the driving force behind practical developments in studies of ultracold matter (BEC) and in quantum information science, including quantum cryptography and quantum computing.
Steve has had worked for most of his career in quantum optics and in quantum information, but also has wide-ranging interests outside of these specialities. He always been a theorist, but enjoys the challenge of working closely with experimental collaborators. His current research interests include the orbital angular momentum of light, optimal measurements in quantum theory, the theory of monitoring quantum evolutions and, most recently, in relativistic quantum theory. He is currently working on a textbook on quantum information for Oxford University Press.
Highlights
Fellow of the Royal Society, 2006
RS Edinburgh Quadrennial James Scott Prize Lectureship, 2006; Royal Society Wolfson Merit Award, 2007
IOP Awards Committee, 2007-
Invited talks include the International Conference on Quantum Information (Rochester, 2007) and European Conference on Optical Communication 2005
Most cited papers
Phase Properties of the Quantized Single-Mode Electromagnetic Field, D.T. Pegg and S.M. Barnett; Physical Review A 39, 1665 (1989).
Unitary Phase Operator in Quantum Mechanics, D.T. Pegg and S.M. Barnett; Europhysics Letters 6, 483 (1988).
On the Hermitian Optical Phase Operator, S.M. Barnett and D.T. Pegg; Journal of Modern Optics 36, 7 (1989).
Squeezing and Superposition States, K. Wodkiewicz, P.L. Knight, S.J. Buckle and S.M. Barnett; Physical Review A 35, 2567 (1987).
Dissipation in a Fundamental Model of Quantum Optical Resonance, S.M. Barnett and P.L. Knight; Physical Review A 33, 2444 (1986).
Quantization of the Electromagnetic Field in Dielectrics, Bruno Huttner and Stephen M. Barnett; Physical Review A 46, 4306 (1992).
Books
Methods in Theoretical Quantum Optics, Stephen M. Barnett and Paul M. Radmore (Oxford University Press, Oxford, 1997).
Optical Angular Momentum, L. Allen, Stephen M. Barnett and Miles J. Padgett (Institute of Physics Publishing, Bristol, 2003).
The Quantum Phase Operator, Stephen M. Barnett and John A. Vaccaro (Taylor and Francis, New York, 2007)
Selected publications
J.Romero, J.Leach, B.Jack, M.R.Dennis, S.Franke-Arnold, S.M.Barnett, M.J.Padgett, "Entangled Optical Vortex Links", Phys. Rev. Lett. 106, 100407 (2011) doi: 10.1103/PhysRevLett.106.100407
R.W.Boyd, B.Rodenburg, M.Mirhosseini, S.M.Barnett, "Influence of atmospheric turbulence on the propagation of quantum states of light using plane-wave encoding", Opt. Exp. 19, 18310-18317 (2011) doi: 10.1364/OE.19.018310
C.S.Hamilton, A.Gabris, I.Jex, S.M.Barnett, "Quantum walk with a four-dimensional coin", New J. Phys. 13, 013015 (2011) doi: 10.1088/1367-2630/13/1/013015
M.Stefanak, S.M.Barnett, B.Kollar, T.Kiss, I.Jex, "Directional correlations in quantum walks with two particles", New J. Phys. 13, 033029 (2011) doi: 10.1088/1367-2630/13/3/033029
F.M.Miatto, A.M.Yao, S.M.Barnett, "Full characterization of the quantum spiral bandwidth of entangled biphotons", Phys. Rev. A 83, 033816 (2011) doi: 10.1103/PhysRevA.83.033816
A.J.T.Colin, S.M.Barnett, J.Jeffers, "Programmed discrimination of qbits with added classical information", Eur. Phys. J. D 63, 463-472 (2011) doi: 10.1140/epjd/e2011-10729-8
J.A.Vaccaro, S.M.Barnett, "Information erasure without an energy cost", Proc. R. Soc. A 467, 1770-1778 (2011) doi: 10.1098/rspa.2010.0577
J.Leach, B.Jack, J.Romero, A.K.Jha, A.M.Yao, S.Franke-Arnold, D.G.Ireland, R.W.Boyd, S.M.Barnett, M.J.Padgett, "Quantum Correlations in Optical Angle-Orbital Angular Momentum Variables", Science 329, 662-665 (2010) doi: 10.1126/science.1190523
A.K.Jha, J.Leach, B.Jack, S.Franke-Arnold, S.M.Barnett, R.W.Boyd, M.J.Padgett, "Angular Two-Photon Interference and Angular Two-Qubit States", Phys. Rev. Lett. 104, 010501 (2010) doi: 10.1103/PhysRevLett.104.010501
S.M.Barnett, "Resolution of the Abraham-Minkowski Dilemma", Phys. Rev. Lett. 104, 070401 (2010) doi: 10.1103/PhysRevLett.104.070401
S.Mahajan, R.M.Cole, J.D.Speed, S.H.Pelfrey, A.E.Russell, P.N.Bartlett, S.M.Barnett, J.J.Baumberg, "Understanding the Surface-Enhanced Raman Spectroscopy ", J. Phys. Chem. C 114, 7242-7250 (2010) doi: 10.1021/jp907197b
J.Romero, J.Leach, B.Jack, S.M.Barnett, M.J.Padgett, S.Franke-Arnold, "Violation of Leggett inequalities in orbital angular momentum subspaces", New J. Phys. 12, 013015 (2010) doi: 10.1088/1367-2630/12/12/123007
Current Grants
Stephen Barnett, , , , ,
EPSRC (2010-2014) £895916
Title: Challenges in Orbital Angular Momentum
Stephen Barnett, , , , ,
DARPA (2010-2013) £241114
Title: Information on a Photon: Free-Space Quantum Communication
Stephen Barnett, , , , ,
Royal Society (2007-2012) £90000
Title: The Royal Society - Research Merit Award
Stephen Barnett, , , , ,
EPSRC (2009-2012) £393573
Title: Full-field coherent quantum imaging
