Phonon-Induced Spin-Spin Interactions in Diamond Nanostructures: Application to Spin Squeezing
Phonon-Induced Spin-Spin Interactions in Diamond Nanostructures: Application to Spin Squeezing
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DOI：
10.1103/physrevlett.110.156402
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发表时间：
2013-04-09
影响因子：
8.6
通讯作者：
Lukin, M. D.
中科院分区：
文献类型：
--
作者：
Bennett, S. D.;Yao, N. Y.;Lukin, M. D.
我们提出并分析了金刚石纳米结构中长程自旋-自旋相互作用的一种新机制。与金刚石中的氮空位中心相关联的电子自旋之间的相互作用通过它们经由应变耦合到金刚石机械纳米谐振器的振动模式来介导。这种耦合导致声子介导的有效自旋-自旋相互作用，其可用于产生自旋系综的压缩态。我们表明，自旋退相和弛豫可以在很大程度上被抑制，允许在现实的实验条件下大量的自旋压缩。我们的方法有影响的自旋系综磁学，以及声子介导的量子信息处理与自旋量子比特。DOI：10.1103/PhysRevLett.110.156402
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