Nanophotonic Optical Isolator Controlled by the Internal State of Cold Atoms

The realization of nanophotonic optical isolators with high optical isolation even at ultralow light levels and low optical losses is an open problem. Here, we employ the link between the local polarization of strongly confined light and its direction of propagation to realize low-loss nonreciprocal...

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Autores principales:	Clément Sayrin, Christian Junge, Rudolf Mitsch, Bernhard Albrecht, Danny O’Shea, Philipp Schneeweiss, Jürgen Volz, Arno Rauschenbeutel
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2015
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/57d5aa1fe1054b87a1b8a3a44baf1d82
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spelling	oai:doaj.org-article:57d5aa1fe1054b87a1b8a3a44baf1d822021-12-02T12:28:07ZNanophotonic Optical Isolator Controlled by the Internal State of Cold Atoms10.1103/PhysRevX.5.0410362160-3308https://doaj.org/article/57d5aa1fe1054b87a1b8a3a44baf1d822015-12-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.5.041036http://doi.org/10.1103/PhysRevX.5.041036https://doaj.org/toc/2160-3308The realization of nanophotonic optical isolators with high optical isolation even at ultralow light levels and low optical losses is an open problem. Here, we employ the link between the local polarization of strongly confined light and its direction of propagation to realize low-loss nonreciprocal transmission through a silica nanofiber at the single-photon level. The direction of the resulting optical isolator is controlled by the spin state of cold atoms. We perform our experiment in two qualitatively different regimes, i.e., with an ensemble of cold atoms where each atom is weakly coupled to the waveguide and with a single atom strongly coupled to the waveguide mode. In both cases, we observe simultaneously high isolation and high forward transmission. The isolator concept constitutes a nanoscale quantum optical analog of microwave ferrite resonance isolators, can be implemented with all kinds of optical waveguides and emitters, and might enable novel integrated optical devices for fiber-based classical and quantum networks.Clément SayrinChristian JungeRudolf MitschBernhard AlbrechtDanny O’SheaPhilipp SchneeweissJürgen VolzArno RauschenbeutelAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 5, Iss 4, p 041036 (2015)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Clément Sayrin Christian Junge Rudolf Mitsch Bernhard Albrecht Danny O’Shea Philipp Schneeweiss Jürgen Volz Arno Rauschenbeutel Nanophotonic Optical Isolator Controlled by the Internal State of Cold Atoms
description	The realization of nanophotonic optical isolators with high optical isolation even at ultralow light levels and low optical losses is an open problem. Here, we employ the link between the local polarization of strongly confined light and its direction of propagation to realize low-loss nonreciprocal transmission through a silica nanofiber at the single-photon level. The direction of the resulting optical isolator is controlled by the spin state of cold atoms. We perform our experiment in two qualitatively different regimes, i.e., with an ensemble of cold atoms where each atom is weakly coupled to the waveguide and with a single atom strongly coupled to the waveguide mode. In both cases, we observe simultaneously high isolation and high forward transmission. The isolator concept constitutes a nanoscale quantum optical analog of microwave ferrite resonance isolators, can be implemented with all kinds of optical waveguides and emitters, and might enable novel integrated optical devices for fiber-based classical and quantum networks.
format	article
author	Clément Sayrin Christian Junge Rudolf Mitsch Bernhard Albrecht Danny O’Shea Philipp Schneeweiss Jürgen Volz Arno Rauschenbeutel
author_facet	Clément Sayrin Christian Junge Rudolf Mitsch Bernhard Albrecht Danny O’Shea Philipp Schneeweiss Jürgen Volz Arno Rauschenbeutel
author_sort	Clément Sayrin
title	Nanophotonic Optical Isolator Controlled by the Internal State of Cold Atoms
title_short	Nanophotonic Optical Isolator Controlled by the Internal State of Cold Atoms
title_full	Nanophotonic Optical Isolator Controlled by the Internal State of Cold Atoms
title_fullStr	Nanophotonic Optical Isolator Controlled by the Internal State of Cold Atoms
title_full_unstemmed	Nanophotonic Optical Isolator Controlled by the Internal State of Cold Atoms
title_sort	nanophotonic optical isolator controlled by the internal state of cold atoms
publisher	American Physical Society
publishDate	2015
url	https://doaj.org/article/57d5aa1fe1054b87a1b8a3a44baf1d82
work_keys_str_mv	AT clementsayrin nanophotonicopticalisolatorcontrolledbytheinternalstateofcoldatoms AT christianjunge nanophotonicopticalisolatorcontrolledbytheinternalstateofcoldatoms AT rudolfmitsch nanophotonicopticalisolatorcontrolledbytheinternalstateofcoldatoms AT bernhardalbrecht nanophotonicopticalisolatorcontrolledbytheinternalstateofcoldatoms AT dannyoshea nanophotonicopticalisolatorcontrolledbytheinternalstateofcoldatoms AT philippschneeweiss nanophotonicopticalisolatorcontrolledbytheinternalstateofcoldatoms AT jurgenvolz nanophotonicopticalisolatorcontrolledbytheinternalstateofcoldatoms AT arnorauschenbeutel nanophotonicopticalisolatorcontrolledbytheinternalstateofcoldatoms
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Nanophotonic Optical Isolator Controlled by the Internal State of Cold Atoms

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