About: Reversibility of continuous-variable quantum cloning     Goto   Sponge   NotDistinct   Permalink

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Description
  • Analyzujeme reversibilitu kvantového klonování se spojitými proměnnými. (cs)
  • We analyze a reversibility of optimal Gaussian 1-->2 quantum cloning of a coherent state using only local operations on the clones and classical communication between them and propose a feasible experimental test of this feature. Performing Bell-type homodyne measurement on one clone and anticlone, an arbitrary unknown input state (not only a coherent state) can be restored in the other clone by applying appropriate local unitary displacement operation. We generalize this concept to a partial reversal of the cloning using only local operations and classical communication (LOCC) and we show that this procedure converts the symmetric cloner to an asymmetric cloner. Further, we discuss a distributed LOCC reversal in optimal 1-->M Gaussian cloning of coherent states which transforms it to optimal 1-->M' cloning for M'<M. Assuming the quantum cloning as a possible eavesdropping attack on quantum communication link, the reversibility can be utilized to improve the security of the link even after the attack.
  • We analyze a reversibility of optimal Gaussian 1-->2 quantum cloning of a coherent state using only local operations on the clones and classical communication between them and propose a feasible experimental test of this feature. Performing Bell-type homodyne measurement on one clone and anticlone, an arbitrary unknown input state (not only a coherent state) can be restored in the other clone by applying appropriate local unitary displacement operation. We generalize this concept to a partial reversal of the cloning using only local operations and classical communication (LOCC) and we show that this procedure converts the symmetric cloner to an asymmetric cloner. Further, we discuss a distributed LOCC reversal in optimal 1-->M Gaussian cloning of coherent states which transforms it to optimal 1-->M' cloning for M'<M. Assuming the quantum cloning as a possible eavesdropping attack on quantum communication link, the reversibility can be utilized to improve the security of the link even after the attack. (en)
Title
  • Reversibilita kvantového klonování se spojitými proměnnými (cs)
  • Reversibility of continuous-variable quantum cloning
  • Reversibility of continuous-variable quantum cloning (en)
skos:prefLabel
  • Reversibilita kvantového klonování se spojitými proměnnými (cs)
  • Reversibility of continuous-variable quantum cloning
  • Reversibility of continuous-variable quantum cloning (en)
skos:notation
  • RIV/61989592:15310/04:00002362!RIV/2005/GA0/153105/N
http://linked.open.../vavai/riv/strany
  • 012314-17
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GP202/03/D239), P(LN00A015)
http://linked.open...iv/cisloPeriodika
  • 1
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 584598
http://linked.open...ai/riv/idVysledku
  • RIV/61989592:15310/04:00002362
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • reversibility;continuous-variable (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [FBD5C7497836]
http://linked.open...i/riv/nazevZdroje
  • Physical Review A
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 69
http://linked.open...iv/tvurceVysledku
  • Filip, Radim
  • Fiurášek, Jaromír
  • Marek, Petr
issn
  • 1050-2947
number of pages
http://localhost/t...ganizacniJednotka
  • 15310
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