Selfcomplementary quantum channels

Marek Smaczynski, Wojciech Roga, Karol Zyczkowski

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Selfcomplementary quantum channels are characterized by such an interaction
between the principal quantum system and the environment that leads to the same
output states of both interacting systems. These maps can describe approximate quantum copy machines, as perfect copying of an unknown quantum state is not possible due to the celebrated no-cloning theorem. We provide here a parametrization of a large class of selfcomplementary channels and analyze their properties. Selfcomplementary channels preserve some residual coherences and residual entanglement. Investigating some measures of non-Markovianity, we show that time evolution under selfcomplementary channels is highly non-Markovian.
LanguageEnglish
Pages1-26
Number of pages27
JournalOpen Systems & Information Dynamics
Volume23
Issue number3
DOIs
Publication statusPublished - 31 Oct 2016

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Copying
Quantum Channel
Cloning
Quantum State
Entanglement
Parametrization
Quantum Systems
Unknown
Theorem
theorems
Class

Keywords

  • principal quantum system
  • quantum channel
  • complementary channel
  • non-Markovian
  • stochastic map

Cite this

Smaczynski, Marek ; Roga, Wojciech ; Zyczkowski, Karol. / Selfcomplementary quantum channels. In: Open Systems & Information Dynamics. 2016 ; Vol. 23, No. 3. pp. 1-26.
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Smaczynski, M, Roga, W & Zyczkowski, K 2016, 'Selfcomplementary quantum channels' Open Systems & Information Dynamics, vol. 23, no. 3, pp. 1-26. https://doi.org/10.1142/S1230161216500141

Selfcomplementary quantum channels. / Smaczynski, Marek; Roga, Wojciech; Zyczkowski, Karol.

In: Open Systems & Information Dynamics, Vol. 23, No. 3, 31.10.2016, p. 1-26.

Research output: Contribution to journalArticle

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