Related papers: Quantum correlated photons via a passive nonlinear microcavity

Quantum correlated photons via a passive nonlinear microcavity

URL: http://arxiv.org/abs/2304.11676v2
Date: Wed, 25 Oct 2023 02:45:31 GMT
Title: Quantum correlated photons via a passive nonlinear microcavity
Authors: Mengdi Zhao, Yunkai Wang, Shanhui Fan and Kejie Fang
Abstract summary: We create non-classical photon correlations, including photon anti-bunching, via a passive InGaP photonic integrated circuit. Our work opens a new route in controlling quantum light by harnessing highly-engineerable bulk optical nonlinearities.
Score: 1.0753191494611891
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Photons, by nature, typically do not exhibit interactions with each other. Creating photon-photon interactions holds immense importance in both fundamental physics and quantum technologies. Currently, such interactions have only been achieved indirectly as mediated by atomic-like quantum emitters with resonant photon-atom interactions. However, the use of these indirect interactions presents substantial fundamental challenges that impede scaling and practical applications. Here we demonstrate creation of non-classical photon correlations, including photon anti-bunching, via a passive InGaP photonic integrated circuit. Our approach employs the quantum interference between uncorrelated light and the two-photon bound state, the latter of which arises from the $\chi^{(2)}$-mediated photon interaction. Our work opens a new route in controlling quantum light by harnessing highly-engineerable bulk optical nonlinearities, which has significant implications for nonlinear optical quantum information processing and quantum networking.

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