Quantum nonlocality for a mixed entangled coherent state

Myung Kim

Research output: Contribution to journalArticle

60 Citations (Scopus)


Quantum nonlocality is tested for an entangled coherent state, interacting with a dissipative environment. A pure entangled coherent state violates Bell's inequality regardless of its coherent amplitude. The higher the initial nonlocality, the more rapidly quantum nonlocality is lost. The entangled coherent state can also be investigated in the framework of 2x2 Hilbert space. The quantum nonlocality persists longer in 2x2 Hilbert space. When it decoheres it is found that the entangled coherent state fails the nonlocality test, which contrasts with the fact that the decohered entangled state is always entangled.
Original languageEnglish
Pages (from-to)851-864
Number of pages14
JournalJournal of Modern Optics
Issue number5-6
Publication statusPublished - 15 Apr 2002

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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