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  • When comparing quantum states to each other, it is possible to obtain an unambiguous answer, indicating that the states are definitely different, already after a single measurement. In this paper we investigate comparison of coherent states, which is the simplest example of quantum state comparison for continuous variables. The method we present has a high success probability, and is experimentally feasible to realize as the only required components are beam splitters and photon detectors. An easily realizable method for quantum state comparison could be important for real applications. As examples of such applications we present a \%22lock and key\%22 scheme and a simple scheme for quantum public key distribution.
  • When comparing quantum states to each other, it is possible to obtain an unambiguous answer, indicating that the states are definitely different, already after a single measurement. In this paper we investigate comparison of coherent states, which is the simplest example of quantum state comparison for continuous variables. The method we present has a high success probability, and is experimentally feasible to realize as the only required components are beam splitters and photon detectors. An easily realizable method for quantum state comparison could be important for real applications. As examples of such applications we present a \%22lock and key\%22 scheme and a simple scheme for quantum public key distribution. (en)
  • Kdyz srovnavame kvantove stavy je mozno ziskat jednoznacnou odpoved jestli jsou ruzne uz jednim merenim. V clanku analyzujeme moznost srovnavani koherentnich stavu, ktere predstavuji nejjednodussi pripad srovnavani stavu se spojitou promennou. Navrzena metoda ma snacnou pravdepodobnost uspechu a nabizi radu moznych aplikaci. Prikladem muze byt schema zamku a klice a metoda distribuce kvantoveho klice. (cs)
Title
  • Experimentally Realizable Quantum Comparison of Coherent States and its Applications
  • Experimentally Realizable Quantum Comparison of Coherent States and its Applications (en)
  • Experimentálně realizovatelné kvantové porovnání koherentních stavů a jeho aplikace (cs)
skos:prefLabel
  • Experimentally Realizable Quantum Comparison of Coherent States and its Applications
  • Experimentally Realizable Quantum Comparison of Coherent States and its Applications (en)
  • Experimentálně realizovatelné kvantové porovnání koherentních stavů a jeho aplikace (cs)
skos:notation
  • RIV/68407700:21340/06:04121606!RIV07-GA0-21340___
http://linked.open.../vavai/riv/strany
  • 022304;022304
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA202/04/2101), P(LC06002)
http://linked.open...iv/cisloPeriodika
  • 0
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
  • 475161
http://linked.open...ai/riv/idVysledku
  • RIV/68407700:21340/06:04121606
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • coherent states; quantum measurement (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [CA8E3BE16CA9]
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
  • 74
http://linked.open...iv/tvurceVysledku
  • Jex, Igor
  • Andersson, E.
  • Curty, M.
issn
  • 1050-2947
number of pages
http://localhost/t...ganizacniJednotka
  • 21340
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