Negative entanglement measure, and what it implies

Ting Yu, J. H. Eberly

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

In this paper, we extract from concurrence its variable part, denoted, a function of density matrix, either positive or negative. We use it to investigate entanglement dynamics of two isolated but initially entangled qubits, each coupled to its own environment. In particular, we show that it can signal whether the disentanglement of an entangled state occurs in a finite time.

Original languageEnglish
Pages (from-to)2289-2296
Number of pages8
JournalJournal of Modern Optics
Volume54
Issue number13-15
DOIs
StatePublished - Sep 2007

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