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1.
Opt Lett ; 46(23): 5998-6001, 2021 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-34851943

RESUMO

We present an experimental investigation of two-photon interference using a continuous-wave laser. We demonstrate the violation of the Clauser-Horne-Shimony-Holt (CHSH) inequality using the phase-randomized weak coherent states from a continuous-wave laser. Our implementation serves as an approach to reveal the quantum nature of a state that is considered to be a classical state.

2.
Opt Express ; 29(22): 35579, 2021 Oct 25.
Artigo em Inglês | MEDLINE | ID: mdl-34808988

RESUMO

The authors include references that appeared on arXiv during the preparation of their paper [Opt. Express29, 22034 (2021)10.1364/OE.427734].

3.
Opt Express ; 29(14): 22034-22043, 2021 Jul 05.
Artigo em Inglês | MEDLINE | ID: mdl-34265977

RESUMO

Analyses based on quantum metrology have shown that the ability to localize the positions of two incoherent point sources can be significantly enhanced over direct imaging through the use of mode sorting. Here we theoretically and experimentally investigate the effect of partial coherence on the sub-diffraction limit localization of two sources based on parity sorting. With the prior information of a negative and real-valued degree of coherence, higher Fisher information is obtained than that for the incoherent case. Our results pave the way to clarifying the role of coherence in quantum-limited metrology.

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