Timekeeping with electron spin states in diamond

被引：59
作者：
Hodges, J. S. [1 ]
Yao, N. Y. [2 ]
Maclaurin, D. [2 ]
Rastogi, C. [3 ]
Lukin, M. D. [2 ]
Englund, D. [1 ,3 ]
机构：
[1] Columbia Univ, Dept Elect Engn, New York, NY 10027 USA
[2] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA
[3] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA
来源：
PHYSICAL REVIEW A | 2013年 / 87卷 / 03期
基金：
美国国家科学基金会;
关键词：
OPTICAL CLOCKS; SINGLE; READOUT;
D O I：
10.1103/PhysRevA.87.032118
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Frequency standards based on atomic states, such as Rb or Cs vapors, or single-trapped ions, are the most precise measures of time. Here we propose and analyze a precision oscillator approach based upon spins in a solid-state system, in particular, the nitrogen-vacancy defect in single-crystal diamond. We show that this system can have stability approaching portable atomic standards and is readily incorporable as a chip-scale device. Using a pulsed spin-echo technique, we anticipate an Allan deviation of sigma(y) = 10(-7)tau(-1/2) limited by thermally-induced strain variations; in the absence of such thermal fluctuations, the system is limited by spin dephasing and harbors an Allan deviation nearing similar to 10(-12)tau(-1/2). Potential improvements based upon advanced diamond material processing, temperature stabilization, and nanophotonic engineering are discussed. DOI: 10.1103/PhysRevA.87.032118
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页数：11
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