Dynamics of quantum correlations and linear entropy in a multi-qubit-cavity system

Alexandra Olaya-Castro, Neil F. Johnson, Luis Quiroga

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We present a theoretical study of the relationship between entanglement and entropy in multi-qubit quantum optical systems. Specifically we investigate quantitative relations between the concurrence and linear entropy for a two-qubit mixed system, implemented as two two-level atoms interacting with a single-mode cavity field. The dynamical evolutions of the entanglement and entropy are controlled via time-dependent cavity-atom couplings. Our theoretical findings lead us to propose an alternative measure of entanglement, which could be used to develop a much needed correlation measure for more general multi-partite quantum systems.

Original languageEnglish (US)
Pages (from-to)S730-S735
JournalJournal of Optics B: Quantum and Semiclassical Optics
Volume6
Issue number8
DOIs
StatePublished - Aug 2004

Keywords

  • Cavity QED
  • Entanglement
  • Entropy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

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