Quantum Nondemolition Measurement of a Quantum Squeezed State Beyond the 3 dB Limit

被引：117

作者：

Lei, C. U. ^{[1
]}

Weinstein, A. J. ^{[1
]}

Suh, J. ^{[2
]}

Wollman, E. E. ^{[1
]}

Kronwald, A. ^{[3
,4
]}

Marquardt, F. ^{[3
,4
]}

Clerk, A. A. ^{[5
]}

Schwab, K. C. ^{[1
]}

机构：

[1] CALTECH, Appl Phys, Pasadena, CA 91125 USA

[2] Korea Res Inst Stand & Sci, Daejeon 305340, South Korea

[3] Univ Erlangen Nurnberg, Staudtstr 7, D-91058 Erlangen, Germany

[4] Max Planck Inst Sci Light, Gunther Scharowsky Str 1 Bau, D-91058 Erlangen, Germany

[5] McGill Univ, Dept Phys, Montreal, PQ H3A 2T8, Canada

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 10期

基金：

加拿大自然科学与工程研究理事会; 新加坡国家研究基金会;

关键词：

MOTION; FLUCTUATIONS; OSCILLATOR; CONVERSION; RESONATOR; NOISE; BITS;

D O I：

10.1103/PhysRevLett.117.100801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use a reservoir engineering technique based on two-tone driving to generate and stabilize a quantum squeezed state of a micron-scale mechanical oscillator in a microwave optomechanical system. Using an independent backaction-evading measurement to directly quantify the squeezing, we observe 4.7 +/- 0.9 dB of squeezing below the zero-point level surpassing the 3 dB limit of standard parametric squeezing techniques. Our measurements also reveal evidence for an additional mechanical parametric effect. The interplay between this effect and the optomechanical interaction enhances the amount of squeezing obtained in the experiment.

引用

页数：5

共 35 条

[1] Quantum-enabled temporal and spectral mode conversion of microwave signals [J].