Geometric-phase backaction in a mesoscopic qubit-oscillator system

被引：22

作者：

Vacanti, G. ^{[1
]}

Fazio, R. ^{[1
,2
,3
]}

Kim, M. S. ^{[4
]}

Palma, G. M. ^{[5
,6
]}

Paternostro, M. ^{[7
]}

Vedral, V. ^{[1
,8
,9
]}

机构：

[1] Natl Univ Singapore, Ctr Quantum Technol, Singapore 117548, Singapore

[2] Scuola Normale Super Pisa, NEST, I-56126 Pisa, Italy

[3] CNR, Ist Nanosci, I-56126 Pisa, Italy

[4] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, QOLS, London SW7 2BW, England

[5] Univ Palermo, Dipartimento Fis, I-90123 Palermo, Italy

[6] CNR, NEST Ist Nanosci, I-90123 Palermo, Italy

[7] Queens Univ Belfast, Sch Math & Phys, Ctr Theoret Atom Mol & Opt Phys, Belfast BT7 1NN, Antrim, North Ireland

[8] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England

[9] Natl Univ Singapore, Dept Phys, Singapore 117548, Singapore

来源：

PHYSICAL REVIEW A | 2012年 / 85卷 / 02期

基金：

新加坡国家研究基金会; 英国工程与自然科学研究理事会;

关键词：

NANOMECHANICAL RESONATOR; QUANTUM; OPTOMECHANICS; MECHANICS;

D O I：

10.1103/PhysRevA.85.022129

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We illustrate a reverse Von Neumann measurement scheme in which a geometric phase induced on a quantum harmonic oscillator is measured using a microscopic qubit as a probe. We show how such a phase, generated by a cyclic evolution in the phase space of the harmonic oscillator, can be kicked back on the qubit, which plays the role of a quantum interferometer. We also extend our study to finite-temperature dissipative Markovian dynamics and discuss potential implementations in micro-and nanomechanical devices coupled to an effective two-level system.

引用

页数：5

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