About: Linear-optics quantum Toffoli and Fredkin gates     Goto   Sponge   NotDistinct   Permalink

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Description
  • We design linear-optics multiqubit quantum logic gates. We assume the traditional encoding of a qubit onto the state of a single photon in two modes (e.g., spatial or polarization). We suggest schemes allowing direct probabilistic realization of the fundamental Toffoli and Fredkin gates without resorting to a sequence of single- and two-qubit gates. This yields more compact schemes and potentially reduces the number of ancilla photons. The proposed setups involve passive linear optics, sources of auxiliary single photons or maximally entangled pairs of photons, and single-photon detectors. In particular, we propose an interferometric implementation of the Toffoli gate in the coincidence basis, which does not require any ancilla photons and is experimentally feasible with current technology.
  • We design linear-optics multiqubit quantum logic gates. We assume the traditional encoding of a qubit onto the state of a single photon in two modes (e.g., spatial or polarization). We suggest schemes allowing direct probabilistic realization of the fundamental Toffoli and Fredkin gates without resorting to a sequence of single- and two-qubit gates. This yields more compact schemes and potentially reduces the number of ancilla photons. The proposed setups involve passive linear optics, sources of auxiliary single photons or maximally entangled pairs of photons, and single-photon detectors. In particular, we propose an interferometric implementation of the Toffoli gate in the coincidence basis, which does not require any ancilla photons and is experimentally feasible with current technology. (en)
  • Byla navržena lineárně optická kvantová logická hradla mezi třemi a více kvantovými bity. Je uvažováno tradiční kódování kvantových bitů do stavů jednoho fotonu ve dvou módech (prostorových či polarizačních). Byla navržena schémata pro přímou realizaci kvantového Toffoliho a Fredkinova hradla bez využití sekvence hradel mezi dvojicemi kvantových bitů. Výsledná schémata jsou kompaktnější a vyžadují méně pomocných fotonů. Zejména bylo vyvinuto schéma pro realizaci Toffoliho hradla v takzvané koincidenční bázi, jež nevyžaduje žádné pomocné fotony a je tak experimentálně testovatelné v rámci současné technologie. (cs)
Title
  • Linear-optics quantum Toffoli and Fredkin gates
  • Lineárně optické kvantové Toffoliho a Fredkinovo hradlo (cs)
  • Linear-optics quantum Toffoli and Fredkin gates (en)
skos:prefLabel
  • Linear-optics quantum Toffoli and Fredkin gates
  • Lineárně optické kvantové Toffoliho a Fredkinovo hradlo (cs)
  • Linear-optics quantum Toffoli and Fredkin gates (en)
skos:notation
  • RIV/61989592:15310/06:00003302!RIV07-MSM-15310___
http://linked.open.../vavai/riv/strany
  • 062313-1-6
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(LC06007), Z(MSM6198959213)
http://linked.open...iv/cisloPeriodika
  • 6
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
  • 483381
http://linked.open...ai/riv/idVysledku
  • RIV/61989592:15310/06:00003302
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • PODOLSKY-ROSEN CHANNELS; TELEPORTATION; STATE (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [33DF1C89A6CB]
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
  • 73
http://linked.open...iv/tvurceVysledku
  • Fiurášek, Jaromír
http://linked.open...n/vavai/riv/zamer
issn
  • 1050-2947
number of pages
http://localhost/t...ganizacniJednotka
  • 15310
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