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Description
  • Je popsán protokol pro přípravu libovolných stavů dvou fotonů v několika prostorových módech. Navržené schéma využívá páry fotonů generované pomocí procesu spontánní sestupné frekvenční konverze, lineární optické komponenty a jednofotonovou detekci či postselekci. Protokol zahrnuje neunitární transformace, které jsou implementovány pomocí atenuátorů. Je diskutováno několik možností optimalizace protokolu, s jejichž pomocí je možné zvýšit pravděpodobnost úspěchu přípravy stavu. Navržené schéma mimo jiné umožňuje přípravu dvoufotonových kvantově provázaných stavů potřebných pro kvantové počítání s lineární optikou. (cs)
  • We describe a protocol capable of preparing an arbitrary state of two photons in several spatial modes using pairs of photons generated by spontaneous parametric down conversion, linear optical elements, and single-photon detectors or postselection. The protocol involves unitary and nonunitary transformations realizable by beam splitters and phase shifters. Nonunitary transformations are implemented by attenuation filters. The protocol contains several optimization capabilities with the goal of improving overall probability of its success. We also show how entangled two-photon states required for quantum computing with linear optics can be prepared using very simple and feasible scheme.
  • We describe a protocol capable of preparing an arbitrary state of two photons in several spatial modes using pairs of photons generated by spontaneous parametric down conversion, linear optical elements, and single-photon detectors or postselection. The protocol involves unitary and nonunitary transformations realizable by beam splitters and phase shifters. Nonunitary transformations are implemented by attenuation filters. The protocol contains several optimization capabilities with the goal of improving overall probability of its success. We also show how entangled two-photon states required for quantum computing with linear optics can be prepared using very simple and feasible scheme. (en)
Title
  • Preparation of entangled states of two photons in several spatial modes
  • Příprava kvantově provázaných stavů dvou fotonů v několika prostorových módech (cs)
  • Preparation of entangled states of two photons in several spatial modes (en)
skos:prefLabel
  • Preparation of entangled states of two photons in several spatial modes
  • Příprava kvantově provázaných stavů dvou fotonů v několika prostorových módech (cs)
  • Preparation of entangled states of two photons in several spatial modes (en)
skos:notation
  • RIV/61989592:15310/08:00005318!RIV09-MSM-15310___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA202/08/0224), P(LC06007)
http://linked.open...iv/cisloPeriodika
  • 2
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 389024
http://linked.open...ai/riv/idVysledku
  • RIV/61989592:15310/08:00005318
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • two-photon entangled states; linear optics; quantum state engineering; two-photon interference (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [FACEDE9605C9]
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
  • 77
http://linked.open...iv/tvurceVysledku
  • Fiurášek, Jaromír
  • Lemr, Karel
issn
  • 1050-2947
number of pages
http://localhost/t...ganizacniJednotka
  • 15310
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