Distributed entanglement generation between continuous-mode Gaussian fields with measurement-feedback enhancement

Hendra I. Nurdin, Naoki Yamamoto

研究成果: Article査読

16 被引用数 (Scopus)

抄録

This paper studies a scheme of two spatially distant oscillator systems that are connected by Gaussian fields and examines distributed entanglement generation between two continuous-mode output Gaussian fields that are radiated by the oscillators. It is demonstrated that using measurement-feedback control while a nonlocal effective entangling operation is on can help to enhance the Einstein-Podolski-Rosen-like entanglement between the output fields. The effect of propagation delays and losses in the fields interconnecting the two oscillators and the effect of other losses in the system are also considered. In particular, for a range of time delays the measurement-feedback controller is able to maintain stability of the closed-loop system and the entanglement enhancement, but the achievable enhancement is only over a smaller bandwidth that is commensurate with the length of the time delays.

本文言語English
論文番号022337
ジャーナルPhysical Review A - Atomic, Molecular, and Optical Physics
86
2
DOI
出版ステータスPublished - 2012 8 29

ASJC Scopus subject areas

  • 原子分子物理学および光学

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