Fidelity criterion for quantum-domain transmission and storage of coherent states beyond unit-gain constraint

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dc.creatorNamiki, Ryo
dc.creatorKoashi, Masato
dc.creatorImoto, Nobuyuki
dc.date2007-03-17
dc.date2008-08-11
dc.date.accessioned2026-07-07T10:05:53Z
dc.date.available2026-07-07T10:05:53Z
dc.descriptionWe generalize the experimental success criterion for quantum teleportation/memory in continuous-variable quantum systems to be suitable for non-unit-gain condition by considering attenuation/amplification of the coherent-state amplitude. The new criterion can be used for a non-ideal quantum memory and long distance quantum communication as well as quantum devices with amplification process. It is also shown that the framework to measure the average fidelity is capable of detecting all Gaussian channels in quantum domain.
dc.description4pages, No figures, Accepted for publication in PRL
dc.identifierhttps://arxiv.org/abs/quant-ph/0703158
dc.identifierhttp://arxiv.org/abs/quant-ph/0703158
dc.identifierPhys. Rev. Lett. 101, 100502 (2008).
dc.identifierdoi:10.1103/PhysRevLett.101.100502
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/170144
dc.subjectQuantum Physics
dc.titleFidelity criterion for quantum-domain transmission and storage of coherent states beyond unit-gain constraint
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