The influences that spatial coherence of the pump beam imposes on the properties of entangled photon pairs

Yaseera Ismail; Stuti Joshi; Francesco Petruccione

doi:10.1117/12.2241787

24 October 2016 The influences that spatial coherence of the pump beam imposes on the properties of entangled photon pairs

Yaseera Ismail, Stuti Joshi, Francesco Petruccione

Author Affiliations +

Proceedings Volume 9996, Quantum Information Science and Technology II; 99960T (2016) https://doi.org/10.1117/12.2241787
Event: SPIE Security + Defence, 2016, Edinburgh, United Kingdom

Abstract

Two photon fields to date, are generated by a fully coherent pump beam. We have experimentally studied the generation of polarisation entangled single photon pairs using a partially coherent pump beam. The spatial coherence effects of the pump beam on the coincidence detection of an entangled single photon source was investigated. The fully coherent coincidence detection was compared to the partial coherence detection. The results show that the partial coherence of the pump beam leads to an increase in coincidence detection. The coherence properties of a beam is significant for freespace optical transmission specifically for free-space quantum communication over long distances.

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Yaseera Ismail, Stuti Joshi, and Francesco Petruccione "The influences that spatial coherence of the pump beam imposes on the properties of entangled photon pairs", Proc. SPIE 9996, Quantum Information Science and Technology II, 99960T (24 October 2016); https://doi.org/10.1117/12.2241787

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