Rotating frame spin dynamics of a nitrogen-vacancy center in a diamond nanocrystal

被引：19

作者：

Laraoui, Abdelghani ^{[1
]}

Meriles, Carlos A. ^{[1
]}

机构：

[1] CUNY City Coll, Dept Phys, New York, NY 10031 USA

来源：

PHYSICAL REVIEW B | 2011年 / 84卷 / 16期

基金：

美国国家科学基金会;

关键词：

SINGLE; ELECTRON; DEFECTS;

D O I：

10.1103/PhysRevB.84.161403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the spin dynamics of a nitrogen-vacancy (NV) center contained in an individual diamond nanocrystal in the presence of continuous microwave excitation. Upon periodic reversal of the microwave phase, we observe a train of "Solomon echoes" that effectively extends the system coherence lifetime to reach several tens of microseconds, depending on the microwave power and phase inversion rate. Starting from a model where the NV center interacts with a bath of paramagnetic defects on the nanocrystal surface, we use average Hamiltonian theory to compute the signal envelope from its amplitude at the echomaxima. A comparison between the effective Rabi and Solomon propagators shows that the observed response can be understood as a form of higher-order decoupling from the spin bath.

引用

页数：5

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