Quantum correlation in disordered spin systems: Applications to magnetic sensing

被引：60

作者：

Cappellaro, P. ^{[1
,2
,3
]}

Lukin, M. D. ^{[1
,2
]}

机构：

[1] Harvard Univ, ITAMP Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

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

[3] MIT, Nucl Sci & Engn Dept, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW A | 2009年 / 80卷 / 03期

基金：

美国国家科学基金会;

关键词：

NITROGEN-VACANCY CENTERS; COHERENT DYNAMICS; RESOLUTION; QUBITS; NMR;

D O I：

10.1103/PhysRevA.80.032311

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a strategy to generate a many-body entangled state in a collection of randomly placed, dipolarly coupled electronic spins in the solid state. By using coherent control to restrict the evolution into a suitable collective subspace, this method enables the preparation of GHZ-like and spin-squeezed states even for randomly positioned spins, while in addition protecting the entangled states against decoherence. We consider the application of this squeezing method to improve the sensitivity of nanoscale magnetometer based on nitrogen-vacancy spin qubits in diamond.

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页数：7

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