Quantum correlations in position, momentum and intermediate bases, measured using fiber arrays

F. Izdebski; J. Leach; R. E. Warburton; D. G. Ireland; S. M. Barnett; A. M. Yao; G. S. Buller; M. J. Padgett

doi:10.1117/12.912055

10 February 2012 Quantum correlations in position, momentum and intermediate bases, measured using fiber arrays

F. Izdebski, J. Leach, R. E. Warburton, D. G. Ireland, S. M. Barnett, A. M. Yao, G. S. Buller, M. J. Padgett

Proceedings Volume 8274, Complex Light and Optical Forces VI; 82740E (2012) https://doi.org/10.1117/12.912055
Event: SPIE OPTO, 2012, San Francisco, California, United States

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.

Citation Download Citation

F. Izdebski, J. Leach, R. E. Warburton, D. G. Ireland, S. M. Barnett, A. M. Yao, G. S. Buller, and M. J. Padgett "Quantum correlations in position, momentum and intermediate bases, measured using fiber arrays", Proc. SPIE 8274, Complex Light and Optical Forces VI, 82740E (10 February 2012); https://doi.org/10.1117/12.912055

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