Spectral mapping of polarization-correlated photon-pair sources using quantum-classical correspondence

• URL: http://arxiv.org/abs/2007.00880v1
• Date: Thu, 2 Jul 2020 05:01:20 GMT
• Title: Spectral mapping of polarization-correlated photon-pair sources using quantum-classical correspondence
• Authors: Hung-Pin Chung, Pawan Kumar, Kai Wang, Olivier Bernard, Chinmay Shirpurkar, Wen-Chiuan Su, Thomas Pertsch, Andrey A. Sukhorukov, Yen-Hung Chen and Frank Setzpfandt
• Abstract summary: We experimentally characterize the spectral properties of a type-II phase-matched spontaneous parametric down-conversion source. The characterization of the spectral information of the generated cross-polarized photon pairs is of importance for the use of such sources in applications including quantum information and communication.
• Score: 4.052255785011268
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: Direct spectral characterization of a quantum photon-pair source usually involves cumbersome, costly, and time-consuming detection issues. In this study, we experimentally characterize the spectral properties of a type-II phase-matched spontaneous parametric down-conversion (SPDC) source based on a titanium-diffused periodically poled lithium niobate (Ti:PPLN) waveguide. The characterization of the spectral information of the generated cross-polarized photon pairs is of importance for the use of such sources in applications including quantum information and communication. We demonstrate that the joint spectral intensity of the cross-polarized photon-pair source can be fully reconstructed using the quantum-classical correspondence through classical sum-frequency generation (SFG) measurements. This technique, which uses a much less complex detection system for visible light, opens the possibility of fast monitoring and control of the quantum state of (polarization-correlated) photon-pair sources to facilitate the realization of a stable and high-usability quantum source.

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