Measurement-Induced Macroscopic Superposition States in Cavity Optomechanics

被引：60

作者：

Hoff, Ulrich B. ^{[1
,2
]}

Kollath-Bonig, Johann ^{[1
]}

Neergaard-Nielsen, Jonas S. ^{[1
]}

Andersen, Ulrik L. ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Phys, Bldg 309, DK-2800 Lyngby, Denmark

[2] Univ Queensland, Australian Res Council, Ctr Excellence Engn Quantum Syst EQuS, Sch Math & Phys, St Lucia, Qld 4072, Australia

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 14期

关键词：

QUANTUM; DECOHERENCE;

D O I：

10.1103/PhysRevLett.117.143601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A novel protocol for generating quantum superpositions of macroscopically distinct states of a bulk mechanical oscillator is proposed, compatible with existing optomechanical devices operating in the bad-cavity limit. By combining a pulsed optomechanical quantum nondemolition (QND) interaction with nonclassical optical resources and measurement-induced feedback, the need for strong single-photon coupling is avoided. We outline a three-pulse sequence of QND interactions encompassing squeezing-enhanced cooling by measurement, state preparation, and tomography.

引用

页数：6

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