Fluorescence thermometry enhanced by the quantum coherence of single spins in diamond

被引：323

作者：

Toyli, David M. ^{[1
]}

de las Casas, Charles F. ^{[1
]}

Christle, David J. ^{[1
]}

Dobrovitski, Viatcheslav V. ^{[2
]}

Awschalom, David D. ^{[1
,3
]}

机构：

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

[2] US DOE, Ames Lab, Ames, IA 50011 USA

[3] Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2013年 / 110卷 / 21期

关键词：

spintronics; electron spin resonance; quantum control; NUCLEAR-MAGNETIC-RESONANCE; ELECTRON-SPIN; MICROSCOPY; CENTERS;

D O I：

10.1073/pnas.1306825110

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We demonstrate fluorescence thermometry techniques with sensitivities approaching 10 mK.Hz(-1/2) based on the spin-dependent photoluminescence of nitrogen vacancy (NV) centers in diamond. These techniques use dynamical decoupling protocols to convert thermally induced shifts in the NV center's spin resonance frequencies into large changes in its fluorescence. By mitigating interactions with nearby nuclear spins and facilitating selective thermal measurements, these protocols enhance the spin coherence times accessible for thermometry by 45-fold, corresponding to a 7-fold improvement in the NV center's temperature sensitivity. Moreover, we demonstrate these techniques can be applied over a broad temperature range and in both finite and near-zero magnetic field environments. This versatility suggests that the quantum coherence of single spins could be practically leveraged for sensitive thermometry in a wide variety of biological and microscale systems.

引用

页码：8417 / 8421

页数：5

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