Quantum repeaters free of polarization disturbance and phase noise

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dc.creatorYin, Zhen-Qiang
dc.creatorZhao, Yi-Bo
dc.creatorYang, Yong
dc.creatorHan, Zheng-Fu
dc.creatorGuo, Guang-Can
dc.date2009-02-26
dc.date.accessioned2026-07-07T13:01:10Z
dc.date.available2026-07-07T13:01:10Z
dc.descriptionOriginal quantum repeater protocols based on single-photon interference suffer from phase noise of the channel, which makes the long-distance quantum communication infeasible. Fortunately, two-photon interference type quantum repeaters can be immune to phase noise of the channel. However, this type quantum repeaters may still suffer from polarization disturbance of the channel. Here we propose a quantum repeaters protocol which is free of polarization disturbance of the channel based on the invariance of the anti-symmetric Bell state $|ψ^->=(|H>|V>-|V>|H>)/\sqrt{2}$ under collective noise. Our protocol is also immune to phase noise with the Sagnac interferometer configuration. Through single-atom cavity-QED technology and linear optics, this scheme can be implemented easily.
dc.description5 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/0902.4498
dc.identifierhttp://arxiv.org/abs/0902.4498
dc.identifierPhys. Rev. A 79, 044302 (2009)
dc.identifierdoi:10.1103/PhysRevA.79.044302
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/226067
dc.subjectQuantum Physics
dc.titleQuantum repeaters free of polarization disturbance and phase noise
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