Quantum Correlations in Position, Momentum and Intermediate Bases, Measured Using Fiber Arrays

Izdebski, F., Leach, J., Warburton, R. E., Ireland, D. G. , Barnett, S. M. , Yao, A. M., Buller, G. S. and Padgett, M. J. (2012) Quantum Correlations in Position, Momentum and Intermediate Bases, Measured Using Fiber Arrays. In: SPIE OPTO 2012: Complex Light and Optical Forces VI, San Francisco, CA, USA, 25-26 Jan 2012, 82740E. ISBN 9780819489173 (doi:10.1117/12.912055)

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Abstract

We have developed a new approach to measuring the spatial position of a single photon. Using fibers of different length, all connected to a single detector allows us to use the high timing precision of single photon avalanche diodes (SPAD) to spatially locate the photon. We have built two 8-element detector arrays to measure the full-field quantum correlations in position, momentum and intermediate bases for photon pairs produced in parametric down conversion. The strength of the position-momentum correlations is found to be an order of magnitude below the classical limit.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Padgett, Professor Miles and Ireland, Professor David and Barnett, Professor Stephen and Yao, Dr Alison and Leach, Mr Jonathan
Authors: Izdebski, F., Leach, J., Warburton, R. E., Ireland, D. G., Barnett, S. M., Yao, A. M., Buller, G. S., and Padgett, M. J.
College/School:College of Science and Engineering > School of Physics and Astronomy
ISSN:0277-786X
ISBN:9780819489173
Published Online:10 February 2012

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
161230High Dimensional Entangled SystemsMiles PadgettEuropean Commission (EC)221906P&S - Physics & Astronomy