Spectroscopy of Surface-Induced Noise Using Shallow Spins in Diamond

被引：201

作者：

Romach, Y. ^{[1
]}

Mueller, C. ^{[2
,3
]}

Unden, T. ^{[2
,3
]}

Rogers, L. J. ^{[2
,3
]}

Isoda, T. ^{[4
]}

Itoh, K. M. ^{[4
]}

Markham, M. ^{[5
]}

Stacey, A. ^{[5
]}

Meijer, J. ^{[6
]}

Pezzagna, S. ^{[6
]}

Naydenov, B. ^{[2
,3
]}

McGuinness, L. P. ^{[2
,3
]}

Bar-Gill, N. ^{[1
,7
]}

Jelezko, F. ^{[2
,3
]}

机构：

[1] Hebrew Univ Jerusalem, Ctr Nanosci & Nanotechnol, Racah Inst Phys, IL-91904 Jerusalem, Israel

[2] Univ Ulm, Inst Quantum Opt, D-89081 Ulm, Germany

[3] Univ Ulm, Ctr Integrated Quantum Sci & Technol, D-89081 Ulm, Germany

[4] Keio Univ, Sch Fundamental Sci & Technol, Yokohama, Kanagawa 2238522, Japan

[5] Element Six Ltd, Ascot SL5 8BP, Berks, England

[6] Univ Leipzig, Inst Expt Phys 2, D-04103 Leipzig, Germany

[7] Hebrew Univ Jerusalem, Rachel & Selim Sch Engn, Dept Appl Phys, IL-91904 Jerusalem, Israel

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 114卷 / 01期

关键词：

NUCLEAR-MAGNETIC-RESONANCE; ELECTRON-SPIN; COHERENCE TIME; QUBIT; DYNAMICS;

D O I：

10.1103/PhysRevLett.114.017601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the noise spectrum experienced by few nanometer deep nitrogen-vacancy centers in diamond as a function of depth, surface coating, magnetic field and temperature. Analysis reveals a double-Lorentzian noise spectrum consistent with a surface electronic spin bath in the low frequency regime, along with a faster noise source attributed to surface-modified phononic coupling. These results shed new light on the mechanisms responsible for surface noise affecting shallow spins at semiconductor interfaces, and suggests possible directions for further studies. We demonstrate dynamical decoupling from the surface noise, paving the way to applications ranging from nanoscale NMR to quantum networks.

引用

页数：5

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