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Description
  • We consider the general problem of the optimal transformation of N uses of (possibly different) unitary channels to a single use of another unitary channel in any finite dimension. We show how the optimal transformation can be fully parallelized, consisting in a preprocessing channel followed by a parallel action of all the N unitaries and a final postprocessing channel. Our techniques allow to achieve an exponential reduction in the number of the free parameters of the optimization problem making it amenable to an efficient numerical treatment. Finally, we apply our general results to find the analytical solution for special cases of interest like the cloning of qubit phase gates.
  • We consider the general problem of the optimal transformation of N uses of (possibly different) unitary channels to a single use of another unitary channel in any finite dimension. We show how the optimal transformation can be fully parallelized, consisting in a preprocessing channel followed by a parallel action of all the N unitaries and a final postprocessing channel. Our techniques allow to achieve an exponential reduction in the number of the free parameters of the optimization problem making it amenable to an efficient numerical treatment. Finally, we apply our general results to find the analytical solution for special cases of interest like the cloning of qubit phase gates. (en)
Title
  • Optimal processing of reversible quantum channels
  • Optimal processing of reversible quantum channels (en)
skos:prefLabel
  • Optimal processing of reversible quantum channels
  • Optimal processing of reversible quantum channels (en)
skos:notation
  • RIV/61989592:15310/14:33150209!RIV15-MSM-15310___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(EE2.3.20.0060), P(EE2.3.30.0004)
http://linked.open...iv/cisloPeriodika
  • 26-27
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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http://linked.open...iv/duvernostUdaju
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  • 34814
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  • RIV/61989592:15310/14:33150209
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http://linked.open.../riv/klicovaSlova
  • cloning; algorithms; operations; computation (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [752CFE912BAC]
http://linked.open...i/riv/nazevZdroje
  • Physics Letters: Part 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
  • 378
http://linked.open...iv/tvurceVysledku
  • Sedlák, Michal
  • Bisio, Alessandro
  • D'Ariano, Giacomo Mauro
  • Perinotti, Paolo
http://linked.open...ain/vavai/riv/wos
  • 000337884200007
issn
  • 0375-9601
number of pages
http://bibframe.org/vocab/doi
  • 10.1016/j.physleta.2014.04.042
http://localhost/t...ganizacniJednotka
  • 15310
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