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首页> 外文会议>Nonlinear Optics and Its Applications VIII; and Quantum Optics III >Nearly deterministic loading of a single cesium atom in a magneto-optical trap and in a microscopic optical tweezer by feedback control
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Nearly deterministic loading of a single cesium atom in a magneto-optical trap and in a microscopic optical tweezer by feedback control

机译：通过反馈控制将近一个确定的铯原子装载到磁光阱和微光镊中

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摘要

Based on feedback control techniques and our realization of nearly complete transferring cold cesium (Cs) atoms from a magneto-optical trap (MOT) to a far-off-resonance microscopic optical tweezer, we investigated the possibility for nearly deterministic loading of a single Cs atom in a MOT and in a microscopic optical tweezer. We combined feedback controls on the gradient of the MOT quadrupole magnetic field (QMF) and on blue-detuned light-assisted collisions (LAC) of confined cold atoms in the tweezer. Using active feedback on QMF of the MOT, we have achieved ～ 98% of probability of single atom loading in a MOT. In a microscopic optical tweezer, by combining the feedback controls on the QMF and the LAC, we finally achieved ～ 95.2% of probability of single atom loading in the tweezer. This two-path feedback control scheme may be extended to load a small-size 2D tweezer array with exact single atom trapped in each site simultaneously. This is very important and promising to implement an addressable multiple-qubit system for demonstrating quantum register and quantum processor.
机译：基于反馈控制技术以及我们将冷铯（Cs）原子从磁光阱（MOT）几乎完全转移到遥共振微光学镊子的实现，我们研究了单个Cs接近确定性加载的可能性MOT和显微光学镊子中的原子。我们结合了对MOT四极磁场（QMF）的梯度和镊子中受限冷原子的蓝色失谐光辅助碰撞（LAC）的反馈控制。使用对MOT的QMF的主动反馈，我们已经实现了〜98％的单原子装载在MOT中的概率。在显微光学镊子中，通过结合QMF和LAC上的反馈控制，我们最终实现了在镊子中单原子负载的概率达到〜95.2％。可以扩展此两径反馈控制方案，以加载同时在每个位置捕获的确切单个原子的小型2D镊子阵列。这是非常重要的，并有望实现用于演示量子寄存器和量子处理器的可寻址多量子位系统。

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  • 来源
  • 会议地点 Brussels(BE)
  • 作者

    Bei LIU; Jun-Min WANG; Wen-Ting DIAO; Jie-Ying WANG; Gang JIN; Jun HE;

  • 作者单位

    State Key Laboratory of Quantum Optics and Quantum Optics Devices (Shanxi University), and Institute of Opto-Electronics, Shanxi University, No.92 Wu Cheng Road, Tai Yuan 030006, Shan Xi Province, P. R. China;

    State Key Laboratory of Quantum Optics and Quantum Optics Devices (Shanxi University), and Institute of Opto-Electronics, Shanxi University, No.92 Wu Cheng Road, Tai Yuan 030006, Shan Xi Province, P. R. China;

    State Key Laboratory of Quantum Optics and Quantum Optics Devices (Shanxi University), and Institute of Opto-Electronics, Shanxi University, No.92 Wu Cheng Road, Tai Yuan 030006, Shan Xi Province, P. R. China;

    State Key Laboratory of Quantum Optics and Quantum Optics Devices (Shanxi University), and Institute of Opto-Electronics, Shanxi University, No.92 Wu Cheng Road, Tai Yuan 030006, Shan Xi Province, P. R. China;

    State Key Laboratory of Quantum Optics and Quantum Optics Devices (Shanxi University), and Institute of Opto-Electronics, Shanxi University, No.92 Wu Cheng Road, Tai Yuan 030006, Shan Xi Province, P. R. China;

    State Key Laboratory of Quantum Optics and Quantum Optics Devices (Shanxi University), and Institute of Opto-Electronics, Shanxi University, No.92 Wu Cheng Road, Tai Yuan 030006, Shan Xi Province, P. R. China;

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  • 正文语种 eng
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  • 关键词

    single atoms; magneto-optical trap; feedback control; quadrupole magnetic field; microscopic optical tweezer; light-assisted collisions; blue-detuned laser; single-atom loading;

    机译：单原子磁光阱反馈控制；四极磁场显微光学镊子光辅助碰撞；蓝谐激光单原子加载;

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