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首页> 外文期刊>Physical review >Optically enabled magnetic resonance study of ~(75)As and ~(121)Sb in ~(28)Si
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Optically enabled magnetic resonance study of ~(75)As and ~(121)Sb in ~(28)Si

机译：〜（28）Si中〜（75）As和〜（121）Sb的光学磁共振研究

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摘要

The electron and nuclear spins of donor impurities in enriched ~(28)Si have great potential as long-lived qubits for a silicon-based quantum information technology. The ability to resolve the hyperfine-split neutral donor ground-state levels in the near-infrared donor bound exciton transitions of the ubiquitous phosphorus impurity in highly isotopically enriched ~(28)Si has led to new methods of hyperpolarizing and measuring the donor electron and nuclear spins. This has resulted in optically assisted magnetic resonance methods that have permitted the measurement of remarkably long nuclear coherence times for both the neutral and ionized phosphorus donor in very lightly doped and highly enriched ~(28)Si. Other shallow donors such as arsenic, antimony, and bismuth offer the potential of larger hyperfine couplings and nuclear spins as compared to phosphorus. Here, we investigate whether donor bound exciton transitions can be used to initialize and read out the nuclear spins of arsenic and antimony in ~(28)Si. The projective readout of the electron and nuclear spins is demonstrated for both ~(75)As and ~(121)Sb, and these optical transitions can strongly hyperpolarize the nuclear spin of ~(75)As. Only a small nuclear hyperpolarization is achieved for ~(121)Sb, likely due to the relative weakness of the no-phonon transition of the Sb donor bound exciton. Optically assisted EPR and NMR is demonstrated for ~(75)As, including Hahn echo coherence time measurements of the six NMR transitions.
机译：富集〜（28）Si中施主杂质的电子和核自旋具有巨大潜力，可作为基于硅的量子信息技术的长寿命量子位。解决高同位素富集〜（28）Si中普遍存在的磷杂质的近红外供体结合的激子跃迁中超细分裂的中性供体基态能级的能力，导致了超极化和测量供体电子的新方法。核自旋。这导致了光学辅助磁共振方法的出现，该方法允许在非常轻掺杂和高浓度的〜（28）Si中测量中性和离子化磷供体的核相干时间非常长。与磷相比，砷，锑和铋等其他浅供体具有更大的超精细偶联和核自旋的潜力。在这里，我们调查供体绑定的激子跃迁是否可用于初始化和读出〜（28）Si中砷和锑的核自旋。对于〜（75）As和〜（121）Sb，都证明了电子和核自旋的投影读数，并且这些光学跃迁可以使〜（75）As的核自旋强烈超极化。 〜（121）Sb仅实现小的核超极化，这可能是由于Sb供体结合的激子的无声子跃迁相对较弱。光学辅助的EPR和NMR被证明适用于〜（75）As，包括六个NMR跃迁的Hahn回波相干时间测量。

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  • 来源
    《Physical review》 |2015年第19期|195203.1-195203.11|共11页
  • 作者

    Jeff Z. Salvail; Phillip Dluhy; Kevin J. Morse; Michael Szech; Kamyar Saeedi; Julian Huber; Helge Riemann; Nikolai V. Abromisov; Peter Becker; Hans-Joachim Pohl; Michael L. W. Thewalt;

  • 作者单位

    Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6;

    Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6;

    Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6;

    Walter Schottky Institute, Technische Universitaet Muenchen, 85748 Garching, Germany;

    Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6;

    Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6;

    Leibniz-Institut fuer Kristallzuechtung, 12489 Berlin, Germany;

    Leibniz-Institut fuer Kristallzuechtung, 12489 Berlin, Germany;

    PTB Braunschweig, 38116 Braunschweig, Germany;

    VITCON Projectconsult GmbH, 07745 Jena, Germany;

    Department of Physics, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6;

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  • 正文语种 eng
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  • 关键词

    magnetooptical effects; excitons and related phenomena;

    机译：磁光效应;激子及相关现象;

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