Transformations on the sets of states and density operators

L. Molnár, Werner Timmermann

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In this paper we consider two physically relevant numerical quantities (namely, the concurrence and Θ-fidelity) and an operation (called {white diamond suit}-product) defined on the set of all quantum states or density operators. Our main aim is to present the complete descriptions of all bijective transformations which preserve any of these quantities or operation.

Original languageEnglish
Pages (from-to)75-84
Number of pages10
JournalLinear Algebra and Its Applications
Volume418
Issue number1
DOIs
Publication statusPublished - Oct 1 2006

Fingerprint

Density Operator
Diamonds
Concurrence
Bijective
Quantum State
Strombus or kite or diamond
Fidelity

Keywords

  • Θ-fidelity
  • Concurrence
  • Density operator
  • Preservers
  • State

ASJC Scopus subject areas

  • Algebra and Number Theory
  • Numerical Analysis

Cite this

Transformations on the sets of states and density operators. / Molnár, L.; Timmermann, Werner.

In: Linear Algebra and Its Applications, Vol. 418, No. 1, 01.10.2006, p. 75-84.

Research output: Contribution to journalArticle

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