About: Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://journals.aps.org/pra/pdf/10.1103/PhysRevA.89.042331
Description	Multipartite quantum correlations, in spite of years of intensive research, still leavemany questions unanswered. While bipartite entanglement is relatively well understood for Gaussian states, the complexity of mere qualitative characterization grows rapidly with increasing number of parties. Here, we present two schemes for transformations of multipartite permutation invariant Gaussian states by Gaussian local operations and classical communication. To this end, we use a scheme for possible experimental realization, making use of the fact that in this picture the whole N-partite state can be described by specifying the states of two separable modes. Numerically, we study entanglement transformations of tripartite states. Finally, we look at the effect our protocols have on fidelity of assisted quantum teleportation and find that, while adding correlated noise does not affect the fidelity at all, there is strong evidence that partial nondemolition measurement leads to a drop in teleportation fidelity. Multipartite quantum correlations, in spite of years of intensive research, still leavemany questions unanswered. While bipartite entanglement is relatively well understood for Gaussian states, the complexity of mere qualitative characterization grows rapidly with increasing number of parties. Here, we present two schemes for transformations of multipartite permutation invariant Gaussian states by Gaussian local operations and classical communication. To this end, we use a scheme for possible experimental realization, making use of the fact that in this picture the whole N-partite state can be described by specifying the states of two separable modes. Numerically, we study entanglement transformations of tripartite states. Finally, we look at the effect our protocols have on fidelity of assisted quantum teleportation and find that, while adding correlated noise does not affect the fidelity at all, there is strong evidence that partial nondemolition measurement leads to a drop in teleportation fidelity. (en)
Title	Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication (en)
skos:prefLabel	Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication (en)
skos:notation	RIV/61989592:15310/14:33149932!RIV15-MSM-15310___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GAP205/12/0694), S
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Fiurášek, Jaromír Černotík, Ondřej
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	51019
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/14:33149932
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	criterion; information; entanglement; quantum teleportation network; continuous variable systems (en)
http://linked.open.../riv/klicoveSlovo	quantum teleportation network entanglement information continuous variable systems criterion
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[613C1882F12C]
http://linked.open...i/riv/nazevZdroje	Physical Review A
http://linked.open...in/vavai/riv/obor	BH
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Complex quantum correlations and their applications
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	89
http://linked.open...iv/tvurceVysledku	Fiurášek, Jaromír Černotík, Ondřej
http://linked.open...ain/vavai/riv/wos	000335227500002
issn	1050-2947
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.1103/PhysRevA.89.042331
http://localhost/t...ganizacniJednotka	15310

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