Jonathan Leach

Jonathan Leach

Dr. Jonathan Leach is a Research Associate of the Canada Excellence Research Chair Initiative in Quantum Nonlinear Optics at the University of Ottawa, Canada. His research interests are experimental quantum optics and photonic sensors, where he applies classical and quantum optics techniques to solve problems in information science, nano-photonic optical sensing and sub-resolution imaging. Prior to his current position, he was a postdoctoral researcher in the Optics group at the University of Glasgow, UK.  His recent work includes experiments to show violations of generalised Bell inequalities, holographic ghost-imaging and an experimental demonstration of the angular EPR paradox.  These experiments explore the capabilities of high-dimensional spatial entanglement for important quantum information protocols.

Recent Publications 

A. Dada, J. Leach, G. Buller, M. Padgett and E. Andersson, Experimental high-dimensional, two-photon entanglement and violations of generalise Bell inequalities, Nature Physics (2011) 

J. Romero, J. Leach, B. Jack, M. R. Dennis, S. Franke-Arnold, S. M. Barnett and M. J. Padgett, Entangled Optical Vortex Links, Phys. Rev. Lett. 105, 100407 (2011) 

A. K. Jha, J. Leach, B. Jack, S. Franke-Arnold, S. M. Barnett, R. W. Boyd, and M. J. Padgett, Angular two-photon interference and angular two-qubit states, Phys. Rev. Lett. 104, 010501 (2010) 

J. Leach, B. Jack, J. Romero, A. K. Jha, A. M. Yao, S. Franke-Arnold, D. Ireland, R. W. Boyd, S. M. Barnett, M. J. Padgett, Quantum Correlations in Optical Angle-Orbital Angular Momentum Variables, Science 329, 662-665 (2010) 

B. Jack, J. Leach, J. Romero, S. Franke-Arnold, M. Ritsch-Marte, S. M. Barnett, and M. J. Padgett, Holographic Ghost Imaging and the Violation of a Bell Inequality, Phys. Rev. Lett. 103, 083602 (2009)

J. Leach, B. Jack, J. Romero, M. Ritsch-Marte, R. W. Boyd, A. K. Jha, S. M. Barnett, S. Franke-Arnold, and M. J. Padgett, Violation of a Bell inequality in two-dimensional orbital angular momentum state-spaces, Opt. Express 17, 8287-8293 (2009).