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arXiv 0906.0083quant-ph
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单原子量子比特中相位退相干的抑制

Suppression of Phase Decoherence in a Single Atomic Qubit

Chih-Sung Chuu, Chuanwei Zhang

摘要:

研究了利用脉冲序列抑制单个原子量子比特中噪声诱导的相位退相干。原子量子比特由单个中性原子在远失谐光偶极阱中组成,相位退相干可能来源于激光强度和光束指向的涨落以及磁场涨落.我们发现,适当的脉冲序列可以大大缩短量子比特的相干时间相比,传统的自旋回波脉冲。

英文摘要:

We study the suppression of noise-induced phase decoherence in a single atomic qubit by employing pulse sequences. The atomic qubit is composed of a single neutral atom in a far-detuned optical dipole trap and the phase decoherence may originate from the laser intensity and beam pointing fluctuations as well as magnetic field fluctuations. We show that suitable pulse sequences may prolongate the qubit coherence time substantially as comparing to the conventional spin echo pulse.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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