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Article: Quantum benchmarks for pure single-mode Gaussian states

TitleQuantum benchmarks for pure single-mode Gaussian states
Authors
Issue Date2014
Citation
Physical Review Letters, 2014, v. 112, n. 1 How to Cite?
AbstractTeleportation and storage of continuous variable states of light and atoms are essential building blocks for the realization of large-scale quantum networks. Rigorous validation of these implementations require identifying, and surpassing, benchmarks set by the most effective strategies attainable without the use of quantum resources. Such benchmarks have been established for special families of input states, like coherent states and particular subclasses of squeezed states. Here we solve the longstanding problem of defining quantum benchmarks for general pure Gaussian single-mode states with arbitrary phase, displacement, and squeezing, randomly sampled according to a realistic prior distribution. As a special case, we show that the fidelity benchmark for teleporting squeezed states with totally random phase and squeezing degree is 1/2, equal to the corresponding one for coherent states. We discuss the use of entangled resources to beat the benchmarks in experiments. © 2014 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/213376
ISSN
2015 Impact Factor: 7.645
2015 SCImago Journal Rankings: 3.731
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChiribella, Giulio-
dc.contributor.authorAdesso, Gerardo-
dc.date.accessioned2015-07-28T04:07:04Z-
dc.date.available2015-07-28T04:07:04Z-
dc.date.issued2014-
dc.identifier.citationPhysical Review Letters, 2014, v. 112, n. 1-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/213376-
dc.description.abstractTeleportation and storage of continuous variable states of light and atoms are essential building blocks for the realization of large-scale quantum networks. Rigorous validation of these implementations require identifying, and surpassing, benchmarks set by the most effective strategies attainable without the use of quantum resources. Such benchmarks have been established for special families of input states, like coherent states and particular subclasses of squeezed states. Here we solve the longstanding problem of defining quantum benchmarks for general pure Gaussian single-mode states with arbitrary phase, displacement, and squeezing, randomly sampled according to a realistic prior distribution. As a special case, we show that the fidelity benchmark for teleporting squeezed states with totally random phase and squeezing degree is 1/2, equal to the corresponding one for coherent states. We discuss the use of entangled resources to beat the benchmarks in experiments. © 2014 American Physical Society.-
dc.languageeng-
dc.relation.ispartofPhysical Review Letters-
dc.titleQuantum benchmarks for pure single-mode Gaussian states-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevLett.112.010501-
dc.identifier.scopuseid_2-s2.0-84892378244-
dc.identifier.volume112-
dc.identifier.issue1-
dc.identifier.eissn1079-7114-
dc.identifier.isiWOS:000331937900002-

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