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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)
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Title
| - Reversibilita kvantového klonování se spojitými proměnnými (cs)
- Reversibility of continuous-variable quantum cloning
- Reversibility of continuous-variable quantum cloning (en)
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skos:prefLabel
| - Reversibilita kvantového klonování se spojitými proměnnými (cs)
- Reversibility of continuous-variable quantum cloning
- Reversibility of continuous-variable quantum cloning (en)
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skos:notation
| - RIV/61989592:15310/04:00002362!RIV/2005/GA0/153105/N
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http://linked.open.../vavai/riv/strany
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
| - P(GP202/03/D239), P(LN00A015)
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/61989592:15310/04:00002362
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - reversibility;continuous-variable (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Filip, Radim
- Fiurášek, Jaromír
- Marek, Petr
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issn
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number of pages
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http://localhost/t...ganizacniJednotka
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