Decay of Rabi Oscillations by Dipolar-Coupled Dynamical Spin Environments

被引：77

作者：

Dobrovitski, V. V. ^{[1
]}

Feiguin, A. E. ^{[2
,3
]}

Hanson, R. ^{[4
]}

Awschalom, D. D. ^{[5
]}

机构：

[1] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA

[2] Univ Maryland, Dept Phys, Condensed Matter Theory Ctr, College Pk, MD 20742 USA

[3] Univ Calif Santa Barbara, Microsoft Stn Q, Santa Barbara, CA 93106 USA

[4] Delft Univ Technol, Kavli Inst Nanosci Delft, NL-2600 GA Delft, Netherlands

[5] Univ Calif Santa Barbara, Ctr Spintron & Quantum Computat, Santa Barbara, CA 93106 USA

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 23期

关键词：

COHERENT DYNAMICS; QUANTUM DOTS; ELECTRON; RELAXATION; DIAMOND; QUBITS; BITS;

D O I：

10.1103/PhysRevLett.102.237601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the Rabi oscillations decay of a spin decohered by a spin bath whose internal dynamics is caused by dipolar coupling between the bath spins. The form and rate of decay as a function of the intrabath coupling is obtained analytically, and confirmed numerically. The complex form of decay smoothly varies from power law to exponential, and the rate changes nonmonotonically with the intrabath coupling, decreasing for both slow and fast baths. The form and rate of Rabi oscillations decay can be used to experimentally determine the intrabath coupling strength for a broad class of solid-state systems.

引用

页数：4

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