FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Photon Coalescence in a Lossy Non-Hermitian Beam Splitter |
Zhiqiang Ren , Rong Wen , and J. F. Chen* |
State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China |
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Cite this article: |
Zhiqiang Ren , Rong Wen , and J. F. Chen 2020 Chin. Phys. Lett. 37 084203 |
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Abstract We investigate photon coalescence in a lossy non-Hermitian system and study a dynamic device modeled by a beam splitter with an extra intrinsic phase term added in the transformation matrix, with which the device is a lossy non-Hermitian linear system. The two-photon interference behavior is altered accordingly since this extra intrinsic phase affects the unitary of transformation and the coalescence of the incoming photons. We calculate the coincidence between two single-photon pulses, considering the interferometric phase between two pulses and the extra intrinsic phase as the tunable parameters. The extra phase turns the famous Hong–Ou–Mandel dip into a bump, with the visibility dependent on both the interferometric phase and the extra phase.
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Received: 17 April 2020
Published: 28 July 2020
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Fund: Supported by the National Natural Science Foundation of China (Grant Nos. 11674100 and 11654005), the Natural Science Foundation of Shanghai (Grant No. 16ZR1448200), and the Shanghai Rising-Star Program (Grant No. 17QA1401300). |
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