Coherence of single spins coupled to a nuclear spin bath of varying density

被引：178

作者：

Mizuochi, N. ^{[1
,2
]}

Neumann, P. ^{[3
]}

Rempp, F. ^{[3
]}

Beck, J. ^{[3
]}

Jacques, V. ^{[3
]}

Siyushev, P. ^{[3
]}

Nakamura, K. ^{[4
]}

Twitchen, D. J. ^{[7
]}

Watanabe, H. ^{[5
]}

Yamasaki, S. ^{[6
]}

Jelezko, F. ^{[3
]}

Wrachtrup, J. ^{[3
]}

机构：

[1] Univ Tsukuba, Grad Sch Lib Informat & Media Studies, Tsukuba, Ibaraki 3058550, Japan

[2] PRESTO JST, Kawaguchi, Saitama 3320012, Japan

[3] Univ Stuttgart, Inst Phys 3, D-70550 Stuttgart, Germany

[4] Tokyo Gas Co Ltd, Tokyo 1160003, Japan

[5] AIST, Diamond Res Ctr, Tsukuba, Ibaraki 3058568, Japan

[6] AIST, Nanotechnol Res Inst, Tsukuba, Ibaraki 3058568, Japan

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

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 04期

关键词：

DIAMOND; DYNAMICS; QUBITS;

D O I：

10.1103/PhysRevB.80.041201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dynamics of single electron and nuclear spins in a diamond lattice with different (13)C nuclear spin concentration is investigated. It is shown that coherent control of up to three individual nuclei in a dense nuclear spin cluster is feasible. The free-induction decays of nuclear spin Bell states and single nuclear coherences among (13)C nuclear spins are compared and analyzed. Reduction in a free-induction- decay time T(2)* and a coherence time T(2) upon increase in nuclear spin concentration has been found. For pure diamond, T(2)* as long as 30 mu s and T(2) of up to 0.65 ms for the electron spin has been observed. The (13)C concentration dependence of T(2)* is explained by Fermi contact and dipolar interactions with nuclei in the lattice. It has been found that T(2) decreases approximately as 1/n, where n is (13)C concentration, which corresponds to the reported theoretical line of T(2) for an electron spin interacting with a nuclear spin bath.

引用

页数：4

共 28 条

[1]

ABE E, ARXIVCONDMAT0512404, P66404

[2]

AWSHALOM DD, 2002, SEMICONDUCTOR SPINTR, P66404

[3] Nanoscale imaging magnetometry with diamond spins under ambient conditions [J].

Balasubramanian, Gopalakrishnan ;

Chan, I. Y. ;

Kolesov, Roman ;

Al-Hmoud, Mohannad ;

Tisler, Julia ;

Shin, Chang ;

Kim, Changdong ;

Wojcik, Aleksander ;

Hemmer, Philip R. ;

Krueger, Anke ;

Hanke, Tobias ;

Leitenstorfer, Alfred ;

Bratschitsch, Rudolf ;

Jelezko, Fedor ;

Wrachtrup, Joerg .

NATURE, 2008, 455 (7213) :648-U46

[4]

Balasubramanian G, 2009, NAT MATER, V8, P383, DOI [10.1038/nmat2420, 10.1038/NMAT2420]

[5] Coherent dynamics of coupled electron and nuclear spin qubits in diamond [J].

Childress, L. ;

Dutt, M. V. Gurudev ;

Taylor, J. M. ;

Zibrov, A. S. ;

Jelezko, F. ;

Wrachtrup, J. ;

Hemmer, P. R. ;

Lukin, M. D. .

SCIENCE, 2006, 314 (5797) :281-285

[6]

*EPAPS, EPRBMDO80R14928 EPAP, P66404

[7]

ERNST R, 1989, PRINCIPLES NMR ONE 2, pCH5

[8] Ab initio supercell calculations on nitrogen-vacancy center in diamond: Electronic structure and hyperfine tensors [J].

Gali, Adam ;

Fyta, Maria ;

Kaxiras, Efthimios .

PHYSICAL REVIEW B, 2008, 77 (15)

[9] Scanning confocal optical microscopy and magnetic resonance on single defect centers [J].

Gruber, A ;

Drabenstedt, A ;

Tietz, C ;

Fleury, L ;

Wrachtrup, J ;

vonBorczyskowski, C .

SCIENCE, 1997, 276 (5321) :2012-2014

[10] Quantum register based on individual electronic and nuclear spin qubits in diamond [J].

Gurudev Dutt, M. V. ;

Childress, L. ;

Jiang, L. ;

Togan, E. ;

Maze, J. ;

Jelezko, F. ;

Zibrov, A. S. ;

Hemmer, P. R. ;

Lukin, M. D. .

SCIENCE, 2007, 316 (5829) :1312-1316

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