Controllable effects of quantum fluctuations on spin free-induction decay at room temperature

被引：26
作者：
Liu, Gang-Qin [1 ]
Pan, Xin-Yu [1 ]
Jiang, Zhan-Feng [2 ,3 ]
Zhao, Nan [2 ,3 ]
Liu, Ren-Bao [2 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[2] Chinese Univ Hong Hong, Dept Phys, Shatin, Hong Kong, Peoples R China
[3] Chinese Univ Hong Hong, Ctr Quantum Coherence, Shatin, Hong Kong, Peoples R China
来源：
SCIENTIFIC REPORTS | 2012年 / 2卷
基金：
中国国家自然科学基金;
关键词：
MAGNETIC-RESONANCE; COHERENT DYNAMICS; DECOHERENCE; MAGNETOMETRY; ELECTRON;
D O I：
10.1038/srep00432
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：
Fluctuations of local fields cause decoherence of quantum objects. Usually at high temperatures, thermal noises are much stronger than quantum fluctuations unless the thermal effects are suppressed by certain techniques such as spin echo. Here we report the discovery of strong quantum-fluctuation effects of nuclear spin baths on free-induction decay of single electron spins in solids at room temperature. We find that the competition between the quantum and thermal fluctuations is controllable by an external magnetic field. These findings are based on Ramsey interference measurement of single nitrogen-vacancy center spins in diamond and numerical simulation of the decoherence, which are in excellent agreement.
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页数：5
相关论文
共 24 条
  • [1] Nanoscale imaging magnetometry with diamond spins under ambient conditions
    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
    [J]. NATURE, 2008, 455 (7213) : 648 - U46
  • [2] Coherent dynamics of coupled electron and nuclear spin qubits in diamond
    Childress, L.
    Dutt, M. V. Gurudev
    Taylor, J. M.
    Zibrov, A. S.
    Jelezko, F.
    Wrachtrup, J.
    Hemmer, P. R.
    Lukin, M. D.
    [J]. SCIENCE, 2006, 314 (5797) : 281 - 285
  • [3] Superconducting quantum bits
    Clarke, John
    Wilhelm, Frank K.
    [J]. NATURE, 2008, 453 (7198) : 1031 - 1042
  • [4] Decay of Rabi Oscillations by Dipolar-Coupled Dynamical Spin Environments
    Dobrovitski, V. V.
    Feiguin, A. E.
    Hanson, R.
    Awschalom, D. D.
    [J]. PHYSICAL REVIEW LETTERS, 2009, 102 (23)
  • [5] Avoiding power broadening in optically detected magnetic resonance of single NV defects for enhanced dc magnetic field sensitivity
    Dreau, A.
    Lesik, M.
    Rondin, L.
    Spinicelli, P.
    Arcizet, O.
    Roch, J. -F.
    Jacques, V.
    [J]. PHYSICAL REVIEW B, 2011, 84 (19):
  • [6] Preserving electron spin coherence in solids by optimal dynamical decoupling
    Du, Jiangfeng
    Rong, Xing
    Zhao, Nan
    Wang, Ya
    Yang, Jiahui
    Liu, R. B.
    [J]. NATURE, 2009, 461 (7268) : 1265 - 1268
  • [7] Grinolds MS, 2011, NAT PHYS, V7, P687, DOI [10.1038/NPHYS1999, 10.1038/nphys1999]
  • [8] Scanning confocal optical microscopy and magnetic resonance on single defect centers
    Gruber, A
    Drabenstedt, A
    Tietz, C
    Fleury, L
    Wrachtrup, J
    vonBorczyskowski, C
    [J]. SCIENCE, 1997, 276 (5321) : 2012 - 2014
  • [9] SPIN ECHOES
    HAHN, EL
    [J]. PHYSICAL REVIEW, 1950, 80 (04): : 580 - 594
  • [10] Coherent dynamics of a single spin interacting with an adjustable spin bath
    Hanson, R.
    Dobrovitski, V. V.
    Feiguin, A. E.
    Gywat, O.
    Awschalom, D. D.
    [J]. SCIENCE, 2008, 320 (5874) : 352 - 355
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