Demonstration of lossy linear transformations and two-photon interference on a photonic chip

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Wang, Kai
White, Simon JU
Szameit, Alexander
Sukhorukov, Andrey A
Solntsev, Alexander S
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2024
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Abstract

Studying quantum correlations in the presence of loss is of critical importance for the physical modeling of real quantum systems. Here, we demonstrate the control of spatial correlations between entangled photons in a photonic chip, designed and modeled using the singular value decomposition approach. We show that engineered loss, using an auxiliary waveguide, allows one to invert the spatial statistics from bunching to antibunching. Furthermore, we study the photon statistics within the loss-emulating channel and observe photon coincidences, which may provide insights into the design of quantum photonic integrated chips.

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Physical Review Research

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6

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4

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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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Photonics, optoelectronics and optical communications

Physical sciences

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Wang, K; White, SJU; Szameit, A; Sukhorukov, AA; Solntsev, AS, Demonstration of lossy linear transformations and two-photon interference on a photonic chip, Physical Review Research, 6 (4), pp. 043076

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