Pure Gaussian state generation via dissipation: A quantum stochastic differential equation approach

研究成果: Article査読

27 被引用数 (Scopus)

抄録

Recently, the complete characterization of a general Gaussian dissipative system having a unique pure steady state was obtained. This result provides a clear guideline for engineering an environment such that the dissipative system has a desired pure steady state such as a cluster state. In this paper, we describe the system in terms of a quantum stochastic differential equation (QSDE) so that the environment channels can be explicitly dealt with. Then, a physical meaning of that characterization, which cannot be seen without the QSDE representation, is clarified; more specifically, the nullifier dynamics of any Gaussian system generating a unique pure steady state is passive. In addition, again based on the QSDE framework, we provide a general and practical method to implement a desired dissipative Gaussian system, which has a structure of quantum state transfer.

本文言語English
ページ(範囲)5324-5337
ページ数14
ジャーナルPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
370
1979
DOI
出版ステータスPublished - 2012 11月 28

ASJC Scopus subject areas

  • 数学 (全般)
  • 工学(全般)
  • 物理学および天文学(全般)

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