Two-photon Hong-Ou-Mandel interference and quantum entanglement between
the frequency-converted idler photon and the signal photon
- URL: http://arxiv.org/abs/2303.12705v1
- Date: Wed, 22 Mar 2023 16:46:16 GMT
- Title: Two-photon Hong-Ou-Mandel interference and quantum entanglement between
the frequency-converted idler photon and the signal photon
- Authors: Jiaxuan Wang, Alexei V. Sokolov, and Girish S. Agarwal
- Abstract summary: We present a theoretical analysis of the transformation of the time-dependent second-order quantum correlations in photon pairs.
We also analyze the two-photon Hong-Ou-Mandel interference between the frequency-converted idler photon and the signal photon.
- Score: 1.1470070927586016
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum frequency up-conversion is a cutting-edge technique that leverages
the interaction between photons and quantum systems to shift the frequency of
single photons from a lower frequency to a higher frequency. If the photon
before up-conversion was one of the entangled pair, then it is important to
understand how much entanglement is preserved after up-conversion. In this
study, we present a theoretical analysis of the transformation of the
time-dependent second-order quantum correlations in photon pairs and find the
preservation of such correlations under fairly general conditions. We also
analyze the two-photon Hong-Ou-Mandel interference between the
frequency-converted idler photon and the signal photon. The visibility of the
two-photon interference is sensitive to the magnitude of the frequency
conversion, and it improves when the frequency separation between two photons
goes down.
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