Experimental study of Hong-Ou-Mandel interference using independent phase randomized weak coherent states

Moschandreou, Eleftherios; Garcia, Jeffrey Ivan; Rollick, Brian Joseph; Qi, Bing; Pooser, Raphael C.; Siopsis, George

doi:10.1109/JLT.2018.2850282

Experimental study of Hong-Ou-Mandel interference using independent phase randomized weak coherent states

Journal Article · Mon Jun 25 00:00:00 EDT 2018 · Journal of Lightwave Technology

DOI:https://doi.org/10.1109/JLT.2018.2850282· OSTI ID:1461051

Moschandreou, Eleftherios ^[1]; Garcia, Jeffrey Ivan ^[1]; Rollick, Brian Joseph ^[1]; ^[2]; ^[2]; Siopsis, George ^[1]

Univ. of Tennessee, Knoxville, TN (United States)
Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Hong–Ou–Mandel interferometers are valuable tools in many Quantum Information and Quantum Optics applications that require photon indistinguishability. The theoretical limit for the Hong–Ou–Mandel visibility is 0.5 for indistinguishable weak coherent photon states, but several device imperfections may hinder achieving this value experimentally. In this work, we examine the dependence of the interference visibility on various factors, including detector side imperfections due to after-pulses, mismatches in the intensities and states of polarization of the input signals, and the overall intensity of the input signals. Finally, we model all imperfections and show that theoretical modeling is in good agreement with the experimental results.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1461051

Journal Information:: Journal of Lightwave Technology, Journal Name: Journal of Lightwave Technology Journal Issue: 17 Vol. 36; ISSN 0733-8724

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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