Cavity Optomechanical Magnetometer

被引：237

作者：

Forstner, S. ^{[1
,2
]}

Prams, S. ^{[1
]}

Knittel, J. ^{[1
,3
]}

van Ooijen, E. D. ^{[1
]}

Swaim, J. D. ^{[1
,3
]}

Harris, G. I. ^{[1
,3
]}

Szorkovszky, A. ^{[1
,3
]}

Bowen, W. P. ^{[1
,3
]}

Rubinsztein-Dunlop, H. ^{[1
,3
]}

机构：

[1] Univ Queensland, Sch Math & Phys, St Lucia, Qld 4072, Australia

[2] TU Muenchen, Dept Phys, D-85748 Garching, Germany

[3] Univ Queensland, Ctr Engineered Quantum Syst, Brisbane, Qld 4072, Australia

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 12期

基金：

澳大利亚研究理事会;

关键词：

RESONANCE; RESONATORS; DIAMOND; TIME; SPIN; CHIP;

D O I：

10.1103/PhysRevLett.108.120801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A cavity optomechanical magnetometer is demonstrated. The magnetic-field-induced expansion of a magnetostrictive material is resonantly transduced onto the physical structure of a highly compliant optical microresonator and read out optically with ultrahigh sensitivity. A peak magnetic field sensitivity of 400 nT Hz(-1/2) is achieved, with theoretical modeling predicting the possibility of sensitivities below 1 pT Hz(-1/2). This chip-based magnetometer combines high sensitivity and large dynamic range with small size and room temperature operation.

引用

页数：5

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