Quantum optical measurements with undetected photons through vacuum field indistinguishability

Abstract Quantum spectroscopy and imaging with undetected idler photons have been demonstrated by measuring one-photon interference between the corresponding entangled signal fields from two spontaneous parametric down conversion (SPDC) crystals. In this Report, we present a new quantum optical meas...

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Autores principales:	Sun Kyung Lee, Tai Hyun Yoon, Minhaeng Cho
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/59c2a07904b24918901089d6eec0fa37
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spelling	oai:doaj.org-article:59c2a07904b24918901089d6eec0fa372021-12-02T11:52:24ZQuantum optical measurements with undetected photons through vacuum field indistinguishability10.1038/s41598-017-06800-02045-2322https://doaj.org/article/59c2a07904b24918901089d6eec0fa372017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06800-0https://doaj.org/toc/2045-2322Abstract Quantum spectroscopy and imaging with undetected idler photons have been demonstrated by measuring one-photon interference between the corresponding entangled signal fields from two spontaneous parametric down conversion (SPDC) crystals. In this Report, we present a new quantum optical measurement scheme utilizing three SPDC crystals in a cascading arrangement; here, neither the detection of the idler photons which interact with materials of interest nor their conjugate signal photons which do not interact with the sample is required. The coherence of signal beams in a single photon W-type path-entangled state is induced and modulated by indistinguishabilities of the idler beams and crucially the quantum vacuum fields. As a result, the optical properties of materials or objects interacting with the idler beam from the first SPDC crystal can be measured by detecting second-order interference between the signal beams generated by the other two SPDC crystals further down the set-up. This gedankenexperiment illustrates the fundamental importance of vacuum fields in generating an optical tripartite entangled state and thus its crucial role in quantum optical measurements.Sun Kyung LeeTai Hyun YoonMinhaeng ChoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sun Kyung Lee Tai Hyun Yoon Minhaeng Cho Quantum optical measurements with undetected photons through vacuum field indistinguishability
description	Abstract Quantum spectroscopy and imaging with undetected idler photons have been demonstrated by measuring one-photon interference between the corresponding entangled signal fields from two spontaneous parametric down conversion (SPDC) crystals. In this Report, we present a new quantum optical measurement scheme utilizing three SPDC crystals in a cascading arrangement; here, neither the detection of the idler photons which interact with materials of interest nor their conjugate signal photons which do not interact with the sample is required. The coherence of signal beams in a single photon W-type path-entangled state is induced and modulated by indistinguishabilities of the idler beams and crucially the quantum vacuum fields. As a result, the optical properties of materials or objects interacting with the idler beam from the first SPDC crystal can be measured by detecting second-order interference between the signal beams generated by the other two SPDC crystals further down the set-up. This gedankenexperiment illustrates the fundamental importance of vacuum fields in generating an optical tripartite entangled state and thus its crucial role in quantum optical measurements.
format	article
author	Sun Kyung Lee Tai Hyun Yoon Minhaeng Cho
author_facet	Sun Kyung Lee Tai Hyun Yoon Minhaeng Cho
author_sort	Sun Kyung Lee
title	Quantum optical measurements with undetected photons through vacuum field indistinguishability
title_short	Quantum optical measurements with undetected photons through vacuum field indistinguishability
title_full	Quantum optical measurements with undetected photons through vacuum field indistinguishability
title_fullStr	Quantum optical measurements with undetected photons through vacuum field indistinguishability
title_full_unstemmed	Quantum optical measurements with undetected photons through vacuum field indistinguishability
title_sort	quantum optical measurements with undetected photons through vacuum field indistinguishability
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/59c2a07904b24918901089d6eec0fa37
work_keys_str_mv	AT sunkyunglee quantumopticalmeasurementswithundetectedphotonsthroughvacuumfieldindistinguishability AT taihyunyoon quantumopticalmeasurementswithundetectedphotonsthroughvacuumfieldindistinguishability AT minhaengcho quantumopticalmeasurementswithundetectedphotonsthroughvacuumfieldindistinguishability
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Quantum optical measurements with undetected photons through vacuum field indistinguishability

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