Dr Sarah Croke

  • Lecturer (Physics and Astronomy)

telephone: 0141 330 4717
email: Sarah.Croke@glasgow.ac.uk

Research interests

‌‌I joined the University of Glasgow as a lecturer in September 2013, trading the cold winters of Canada for the comparatively warmer climes of the West of Scotland. I was very happy to have the opportunity to return to Glasgow, where I completed my PhD at the University of Strathclyde in 2007. In the interim I spent almost 6 years in the lovely Waterloo, Ontario, at the Perimeter Institute, where I was first a postdoctoral fellow and later a PSI fellow. My main research interests are in quantum information and quantum measurement, motivated by the fact that I remain somewhat puzzled by quantum theory. My current research focuses on quantum information protocols that require only a small quantum processor, and thus may be implementable with current or near future technology. Quantum information is a broad and interdisciplinary field sitting somewhere at the boundary between mathematics, computer science, and theoretical and experimental physics. Working in this field I have enjoyed learning parts of all of these, but remain a physicist, and am most interested in the interface between theoretical and experimental aspects of the field. I still hope to some day understand what quantum theory is trying to tell us about the world.

researcherID:


Selected publications

All publications

List by: Type | Date

Jump to: 2017 | 2015 | 2014 | 2013 | 2012 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005
Number of items: 23.

2017

Flatt, K., Barnett, S. M. and Croke, S. (2017) Gleason-Busch theorem for sequential measurements. Physical Review A: Atomic, Molecular and Optical Physics, (Accepted for Publication)

Weir, G., Barnett, S. M. and Croke, S. (2017) Optimal discrimination of single-qubit mixed states. Physical Review A: Atomic, Molecular and Optical Physics, 96(2), 022312. (doi:10.1103/PhysRevA.96.022312)

Ritboon, A., Croke, S. and Barnett, S. (2017) Proposed optical realisation of a two photon, four-qubit entangled χ state. Journal of Optics, 19(7), 075201. (doi:10.1088/2040-8986/aa72af)

Croke, S., Barnett, S. M. and Weir, G. (2017) Optimal sequential measurements for bipartite state discrimination. Physical Review A: Atomic, Molecular and Optical Physics, 95(5), 052308. (doi:10.1103/PhysRevA.95.052308)

Trautmann, N., Ferenczi, G., Croke, S. and Barnett, S. M. (2017) Holographic quantum imaging: reconstructing spatial properties via two-particle interference. Journal of Optics, 19(5), 054005. (doi:10.1088/2040-8986/aa67b6)

Croke, S. and Barnett, S. M. (2017) Difficulty of distinguishing product states locally. Physical Review A: Atomic, Molecular and Optical Physics, 95(1), 012337. (doi:10.1103/PhysRevA.95.012337)

2015

Croke, S. (2015) PT-symmetric Hamiltonians and their application in quantum information. Physical Review A: Atomic, Molecular and Optical Physics, 91(5), 052113. (doi:10.1103/PhysRevA.91.052113)

2014

Blume-Kohout, R., Croke, S. and Gottesman, D. (2014) Streaming universal distortion-free entanglement concentration. IEEE Transactions on Information Theory, 60(1), pp. 334-350. (doi:10.1109/TIT.2013.2292135)

2013

Blume-Kohout, R., Croke, S. and Zwolak, M. (2013) Quantum data gathering. Scientific Reports, 3(1800), (doi:10.1038/srep01800)

2012

Gottesman, D., Jennewein, T. and Croke, S. (2012) Longer-baseline telescopes using quantum repeaters. Physical Review Letters, 109(7), Art. 070503. (doi:10.1103/PhysRevLett.109.070503)

Croke, S. and Kent, A. (2012) Security details for bit commitment by transmitting measurement outcomes. Physical Review A: Atomic, Molecular and Optical Physics, 86(5), 052309. (doi:10.1103/PhysRevA.86.052309)

2010

Croke, S.M., O'Sullivan, S.P. and Gabuzda, D.C. (2010) The parsec-scale distributions of intensity, linear polarization and Faraday rotation in the core and jet of Mrk 501 at 8.4-1.6 GHz. Monthly Notices of the Royal Astronomical Society, 402(1), pp. 259-270. (doi:10.1111/j.1365-2966.2009.15923.x)

Lu, Y., Coish, N., Kaltenbaek, R., Hamel, D.R., Croke, S. and Resch, K.J. (2010) Minimum-error discrimination of entangled quantum states. Physical Review A: Atomic, Molecular and Optical Physics, 82(4), 042340. (doi:10.1103/PhysRevA.82.042340)

McEndoo, S., Croke, S., Brophy, J. and Busch, T. (2010) Phase evolution in spatial dark states. Physical Review A: Atomic, Molecular and Optical Physics, 81(4), 043640. (doi:10.1103/PhysRevA.81.043640)

2009

Barnett, S.M. and Croke, S. (2009) On the conditions for discrimination between quantum states with minimum error. Journal of Physics A: Mathematical and Theoretical, 42(6), 062001. (doi:10.1088/1751-8113/42/6/062001)

Barnett, S.M. and Croke, S. (2009) Quantum state discrimination. Advances in Optics and Photonics, 1(2), pp. 238-278. (doi:10.1364/AOP.1.000238)

2008

Croke, S.M. and Gabuzda, D.C. (2008) Aligning VLBI images of active galactic nuclei at different frequencies. Monthly Notices of the Royal Astronomical Society, 386(2), pp. 619-626. (doi:10.1111/j.1365-2966.2008.13087.x)

Croke, S., Barnett, S.M. and Stenholm, S. (2008) Linear transformations of quantum states. Annals of Physics, 323(4), pp. 893-906. (doi:10.1016/j.aop.2007.06.001)

Croke, S., Andersson, E. and Barnett, S.M. (2008) No-signaling bound on quantum state discrimination. Physical Review A: Atomic, Molecular and Optical Physics, 77(1), 012113. (doi:10.1103/PhysRevA.77.012113)

2007

Croke, S., Mosley, P.J., Barnett, S.M. and Walmsley, I.A. (2007) Maximum confidence measurements and their optical implementation. European Physical Journal D, 41(3), pp. 589-598. (doi:10.1140/epjd/e2006-00265-1)

2006

Croke, S., Andersson, E., Barnett, S.M., Gilson, C.R. and Jeffers, J. (2006) Maximum confidence quantum measurements. Physical Review Letters, 96(7), 070401. (doi:10.1103/PhysRevLett.96.070401)

Mosley, P., Croke, S., Walmsley, I. and Barnett, S.M. (2006) Experimental realization of maximum confidence quantum state discrimination for the extraction of quantum information. Physical Review Letters, 97(19), p. 193601. (doi:10.1103/PhysRevLett.97.193601)

2005

Croke, S., Charlot, P., Gabuzda, D. and Sol, H. (2005) Multi-frequency multi-epoch VLBA polarization observations of MRK 501. Baltic Astronomy, 14(3), pp. 367-370.

This list was generated on Tue Dec 12 15:35:44 2017 GMT.
Jump to: Articles
Number of items: 23.

Articles

Flatt, K., Barnett, S. M. and Croke, S. (2017) Gleason-Busch theorem for sequential measurements. Physical Review A: Atomic, Molecular and Optical Physics, (Accepted for Publication)

Weir, G., Barnett, S. M. and Croke, S. (2017) Optimal discrimination of single-qubit mixed states. Physical Review A: Atomic, Molecular and Optical Physics, 96(2), 022312. (doi:10.1103/PhysRevA.96.022312)

Ritboon, A., Croke, S. and Barnett, S. (2017) Proposed optical realisation of a two photon, four-qubit entangled χ state. Journal of Optics, 19(7), 075201. (doi:10.1088/2040-8986/aa72af)

Croke, S., Barnett, S. M. and Weir, G. (2017) Optimal sequential measurements for bipartite state discrimination. Physical Review A: Atomic, Molecular and Optical Physics, 95(5), 052308. (doi:10.1103/PhysRevA.95.052308)

Trautmann, N., Ferenczi, G., Croke, S. and Barnett, S. M. (2017) Holographic quantum imaging: reconstructing spatial properties via two-particle interference. Journal of Optics, 19(5), 054005. (doi:10.1088/2040-8986/aa67b6)

Croke, S. and Barnett, S. M. (2017) Difficulty of distinguishing product states locally. Physical Review A: Atomic, Molecular and Optical Physics, 95(1), 012337. (doi:10.1103/PhysRevA.95.012337)

Croke, S. (2015) PT-symmetric Hamiltonians and their application in quantum information. Physical Review A: Atomic, Molecular and Optical Physics, 91(5), 052113. (doi:10.1103/PhysRevA.91.052113)

Blume-Kohout, R., Croke, S. and Gottesman, D. (2014) Streaming universal distortion-free entanglement concentration. IEEE Transactions on Information Theory, 60(1), pp. 334-350. (doi:10.1109/TIT.2013.2292135)

Blume-Kohout, R., Croke, S. and Zwolak, M. (2013) Quantum data gathering. Scientific Reports, 3(1800), (doi:10.1038/srep01800)

Gottesman, D., Jennewein, T. and Croke, S. (2012) Longer-baseline telescopes using quantum repeaters. Physical Review Letters, 109(7), Art. 070503. (doi:10.1103/PhysRevLett.109.070503)

Croke, S. and Kent, A. (2012) Security details for bit commitment by transmitting measurement outcomes. Physical Review A: Atomic, Molecular and Optical Physics, 86(5), 052309. (doi:10.1103/PhysRevA.86.052309)

Croke, S.M., O'Sullivan, S.P. and Gabuzda, D.C. (2010) The parsec-scale distributions of intensity, linear polarization and Faraday rotation in the core and jet of Mrk 501 at 8.4-1.6 GHz. Monthly Notices of the Royal Astronomical Society, 402(1), pp. 259-270. (doi:10.1111/j.1365-2966.2009.15923.x)

Lu, Y., Coish, N., Kaltenbaek, R., Hamel, D.R., Croke, S. and Resch, K.J. (2010) Minimum-error discrimination of entangled quantum states. Physical Review A: Atomic, Molecular and Optical Physics, 82(4), 042340. (doi:10.1103/PhysRevA.82.042340)

McEndoo, S., Croke, S., Brophy, J. and Busch, T. (2010) Phase evolution in spatial dark states. Physical Review A: Atomic, Molecular and Optical Physics, 81(4), 043640. (doi:10.1103/PhysRevA.81.043640)

Barnett, S.M. and Croke, S. (2009) On the conditions for discrimination between quantum states with minimum error. Journal of Physics A: Mathematical and Theoretical, 42(6), 062001. (doi:10.1088/1751-8113/42/6/062001)

Barnett, S.M. and Croke, S. (2009) Quantum state discrimination. Advances in Optics and Photonics, 1(2), pp. 238-278. (doi:10.1364/AOP.1.000238)

Croke, S.M. and Gabuzda, D.C. (2008) Aligning VLBI images of active galactic nuclei at different frequencies. Monthly Notices of the Royal Astronomical Society, 386(2), pp. 619-626. (doi:10.1111/j.1365-2966.2008.13087.x)

Croke, S., Barnett, S.M. and Stenholm, S. (2008) Linear transformations of quantum states. Annals of Physics, 323(4), pp. 893-906. (doi:10.1016/j.aop.2007.06.001)

Croke, S., Andersson, E. and Barnett, S.M. (2008) No-signaling bound on quantum state discrimination. Physical Review A: Atomic, Molecular and Optical Physics, 77(1), 012113. (doi:10.1103/PhysRevA.77.012113)

Croke, S., Mosley, P.J., Barnett, S.M. and Walmsley, I.A. (2007) Maximum confidence measurements and their optical implementation. European Physical Journal D, 41(3), pp. 589-598. (doi:10.1140/epjd/e2006-00265-1)

Croke, S., Andersson, E., Barnett, S.M., Gilson, C.R. and Jeffers, J. (2006) Maximum confidence quantum measurements. Physical Review Letters, 96(7), 070401. (doi:10.1103/PhysRevLett.96.070401)

Mosley, P., Croke, S., Walmsley, I. and Barnett, S.M. (2006) Experimental realization of maximum confidence quantum state discrimination for the extraction of quantum information. Physical Review Letters, 97(19), p. 193601. (doi:10.1103/PhysRevLett.97.193601)

Croke, S., Charlot, P., Gabuzda, D. and Sol, H. (2005) Multi-frequency multi-epoch VLBA polarization observations of MRK 501. Baltic Astronomy, 14(3), pp. 367-370.

This list was generated on Tue Dec 12 15:35:44 2017 GMT.