Mutual preservation of entanglement

Andrzej Veitia, Jun Jing, Ting Yu, Chee Wei Wong

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

We study a generalized double Jaynes-Cummings (JC) model where two entangled pairs of two-level atoms interact indirectly. We show that there exist initial states of the qubit system so that two entangled pairs are available at all times. In particular, the minimum entanglement in the pairs as a function of the initial state is studied. Finally, we extend our findings to a model consisting of multi-mode atom-cavity interactions. We use a non-Markovian quantum state diffusion (QSD) equation to obtain the steady-state density matrix for the qubits. We show that the multi-mode model also displays dynamical preservation of entanglement.

Original languageEnglish
Pages (from-to)2755-2764
Number of pages10
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume376
Issue number44
DOIs
StatePublished - 10 Sep 2012

Keywords

  • Open systems
  • Quantum entanglement
  • Quantum optics

Fingerprint

Dive into the research topics of 'Mutual preservation of entanglement'. Together they form a unique fingerprint.

Cite this