Parametrization of the feedback Hamiltonian realizing a pure steady state

研究成果: Article査読

37 被引用数 (Scopus)

抄録

Feedback control is expected to considerably protect quantum states against decoherence caused by interaction between the system and environment. Especially, Markovian feedback scheme developed by Wiseman can modify the properties of decoherence and eventually recover the purity of the steady state of the corresponding master equation. This paper provides a condition for which the modified master equation has a pure steady state. By applying this condition to a two-qubit system, we obtain a complete parametrization of the feedback Hamiltonian such that the steady state becomes a maximally entangled state.

本文言語English
論文番号024104
ジャーナルPhysical Review A - Atomic, Molecular, and Optical Physics
72
2
DOI
出版ステータスPublished - 2005 8
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学

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