Entanglement between a Λ-type three-level atom and its spontaneous emission fields

Mao Fa Fang*, Shi Yao ZHU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

The entanglement between a Λ-type three-levels atom and its spontaneous emission field is studied by using the quantum entropy. The results show that, there is a steady state entanglement between the Λ-type three-level atom and its spontaneous emission field. The entanglement between the Λ-type three-level atom and its spontaneous emission fields decreases due to the coherent superposition of the atomic levels. The spontaneous emission process of the atom is one of the atom is entangled with its spontaneous emission fields. For the two fields related to the two transition in the Λ-type three-level atom, we have shown that they are classically correlated, but there is no quantum entanglement between the two fields.

Original languageEnglish
Pages (from-to)475-483
Number of pages9
JournalPhysica A: Statistical Mechanics and its Applications
Volume369
Issue number2
DOIs
Publication statusPublished - 15 Sep 2006

Scopus Subject Areas

  • Statistics and Probability
  • Condensed Matter Physics

User-Defined Keywords

  • Entanglement
  • Quantum entropy
  • Spontaneous emission
  • Two-levels atom
  • Λ-type three-levels atom

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