Phonon-Induced Spin-Spin Interactions in Diamond Nanostructures: Application to Spin Squeezing

被引：253

作者：

Bennett, S. D. ^{[1
]}

Yao, N. Y. ^{[1
]}

Otterbach, J. ^{[1
]}

Zoller, P. ^{[2
,3
]}

Rabl, P. ^{[4
]}

Lukin, M. D. ^{[1
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[2] Austrian Acad Sci, Inst Quantum Opt & Quantum Informat, A-6020 Innsbruck, Austria

[3] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria

[4] TU Wien, Inst Atom & Subat Phys, A-1020 Vienna, Austria

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 15期

基金：

加拿大自然科学与工程研究理事会; 美国国家科学基金会; 奥地利科学基金会;

关键词：

SINGLE-CRYSTAL DIAMOND; QUBIT; RESONATOR; ELECTRON; CAVITY; NOISE;

D O I：

10.1103/PhysRevLett.110.156402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose and analyze a novel mechanism for long-range spin-spin interactions in diamond nanostructures. The interactions between electronic spins, associated with nitrogen-vacancy centers in diamond, are mediated by their coupling via strain to the vibrational mode of a diamond mechanical nanoresonator. This coupling results in phonon-mediated effective spin-spin interactions that can be used to generate squeezed states of a spin ensemble. We show that spin dephasing and relaxation can be largely suppressed, allowing for substantial spin squeezing under realistic experimental conditions. Our approach has implications for spin-ensemble magnetometry, as well as phonon-mediated quantum information processing with spin qubits. DOI: 10.1103/PhysRevLett.110.156402

引用

页数：5

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