Topological protection of continuous frequency entangled biphoton states

Topological quantum optics that manipulates the topological protection of quantum states has attracted special interests in recent years. Here we demonstrate valley photonic crystals implementing topologically protected transport of the continuous frequency entangled biphoton states. We numerically...

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Autores principales:	Jiang Zhen, Ding Yizhou, Xi Chaoxiang, He Guangqiang, Jiang Chun
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	quantum entanglement topological photonics valley photonic crystals Physics QC1-999
Acceso en línea:	https://doaj.org/article/5570d8ff8fd64040acc7cf1b733d064c
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spelling	oai:doaj.org-article:5570d8ff8fd64040acc7cf1b733d064c2021-12-05T14:10:56ZTopological protection of continuous frequency entangled biphoton states2192-861410.1515/nanoph-2021-0371https://doaj.org/article/5570d8ff8fd64040acc7cf1b733d064c2021-11-01T00:00:00Zhttps://doi.org/10.1515/nanoph-2021-0371https://doaj.org/toc/2192-8614Topological quantum optics that manipulates the topological protection of quantum states has attracted special interests in recent years. Here we demonstrate valley photonic crystals implementing topologically protected transport of the continuous frequency entangled biphoton states. We numerically simulate the nonlinear four-wave mixing interaction of topological valley kink states propagating along the interface between two valley photonic crystals. We theoretically clarify that the signal and idler photons generated from the four-wave mixing interaction are continuous frequency entangled. The numerical simulation results imply that the entangled biphoton states are robust against the sharp bends and scattering, giving clear evidence of topological protection of entangled photon pairs. Our proposal paves a concrete way to perform topological protection of entangled quantum states operating at telecommunication wavelengths.Jiang ZhenDing YizhouXi ChaoxiangHe GuangqiangJiang ChunDe Gruyterarticlequantum entanglementtopological photonicsvalley photonic crystalsPhysicsQC1-999ENNanophotonics, Vol 10, Iss 16, Pp 4019-4026 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	quantum entanglement topological photonics valley photonic crystals Physics QC1-999
spellingShingle	quantum entanglement topological photonics valley photonic crystals Physics QC1-999 Jiang Zhen Ding Yizhou Xi Chaoxiang He Guangqiang Jiang Chun Topological protection of continuous frequency entangled biphoton states
description	Topological quantum optics that manipulates the topological protection of quantum states has attracted special interests in recent years. Here we demonstrate valley photonic crystals implementing topologically protected transport of the continuous frequency entangled biphoton states. We numerically simulate the nonlinear four-wave mixing interaction of topological valley kink states propagating along the interface between two valley photonic crystals. We theoretically clarify that the signal and idler photons generated from the four-wave mixing interaction are continuous frequency entangled. The numerical simulation results imply that the entangled biphoton states are robust against the sharp bends and scattering, giving clear evidence of topological protection of entangled photon pairs. Our proposal paves a concrete way to perform topological protection of entangled quantum states operating at telecommunication wavelengths.
format	article
author	Jiang Zhen Ding Yizhou Xi Chaoxiang He Guangqiang Jiang Chun
author_facet	Jiang Zhen Ding Yizhou Xi Chaoxiang He Guangqiang Jiang Chun
author_sort	Jiang Zhen
title	Topological protection of continuous frequency entangled biphoton states
title_short	Topological protection of continuous frequency entangled biphoton states
title_full	Topological protection of continuous frequency entangled biphoton states
title_fullStr	Topological protection of continuous frequency entangled biphoton states
title_full_unstemmed	Topological protection of continuous frequency entangled biphoton states
title_sort	topological protection of continuous frequency entangled biphoton states
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/5570d8ff8fd64040acc7cf1b733d064c
work_keys_str_mv	AT jiangzhen topologicalprotectionofcontinuousfrequencyentangledbiphotonstates AT dingyizhou topologicalprotectionofcontinuousfrequencyentangledbiphotonstates AT xichaoxiang topologicalprotectionofcontinuousfrequencyentangledbiphotonstates AT heguangqiang topologicalprotectionofcontinuousfrequencyentangledbiphotonstates AT jiangchun topologicalprotectionofcontinuousfrequencyentangledbiphotonstates
_version_	1718371535555657728

Topological protection of continuous frequency entangled biphoton states

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