Coherence of an optically illuminated single nuclear spin qubit

被引：48

作者：

Jiang, L. ^{[1
]}

Dutt, M. V. Gurudev ^{[1
]}

Togan, E. ^{[1
]}

Childress, L. ^{[1
]}

Cappellaro, P. ^{[2
]}

Taylor, J. M. ^{[3
]}

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

机构：

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

[2] Inst Theoret Atom Mol & Opt Phys, Cambridge, MA 02138 USA

[3] MIT, Dept Phys, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.100.073001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the coherence properties of individual nuclear spin quantum bits in diamond [Dutt , Science 316, 1312 (2007)] when a proximal electronic spin associated with a nitrogen-vacancy (N-V) center is being interrogated by optical radiation. The resulting nuclear spin dynamics are governed by time-dependent hyperfine interaction associated with rapid electronic transitions, which can be described by a spin-fluctuator model. We show that due to a process analogous to motional averaging in nuclear magnetic resonance, the nuclear spin coherence can be preserved after a large number of optical excitation cycles. Our theoretical analysis is in good agreement with experimental results. It indicates a novel approach that could potentially isolate the nuclear spin system completely from the electronic environment.

引用

页数：4

共 21 条

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