论文标题
电气控制，用于延长钻石的离子植入氮气空位中心的Ramsey自旋连贯时间
Electrical Control for Extension of Ramsey Spin Coherence Time of Ion-Implanted Nitrogen Vacancy Centers in diamond
论文作者
论文摘要
旋转相干时间的扩展是量子信息和量子传感的关键问题。在固态系统中，已经证明了用各种技术抑制噪声。另一方面，抑制电气控制对于片上量子信息设备的单个控制很重要。在这里，我们显示了通过抑制磁噪声延长40 nm深离子植入单氮空位中心旋转的自旋相干时间的电气控制。我们在10微米间隔的两个触点上应用了120 V DC。从自由感染和HAHN-ECHO衰减中估计的自旋相干时间分别增加到约10倍（达到10微秒）和1.4次（分别达到150微秒）。从定量分析中，根据所施加的静态电场的主导分解来源阐明了。扩展的电控制可以提高灵敏度，以增强温度，压力和电场（但不是磁场）的直流感应，从而在固态量子信息设备中打开了一种新技术。
The extension of the spin coherence times is a crucial issue for quantum information and quantum sensing. In solid state systems, suppressing noises with various techniques have been demonstrated. On the other hand, an electrical control for suppression is important toward individual controls of on-chip quantum information devices. Here we show the electrical control for extension of the spin coherence times of 40 nm-deep ion-implanted single nitrogen vacancy center spins in diamond by suppressing magnetic noises. We applied 120 V DC across two contacts spaced by 10 micrometers. The spin coherence times, estimated from a free-induction-decay and a Hahn-echo decay, were increased up to about 10 times (reaching 10 microseconds) and 1.4 times (reaching 150 microseconds), respectively. From the quantitative analysis, the dominant decoherence source depending on the applied static electric field was elucidated. The electrical control for extension can deliver a sensitivity enhancement to the DC sensing of temperature, pressure and electric (but not magnetic) fields, opening a new technique in solid-state quantum information devices.
