Quantum Zeno effect with a superconducting qubit

Y. Matsuzaki; S. Saito; K. Kakuyanagi; K. Semba

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Quantum Zeno effect with a superconducting qubit

机译：具有超导量子位的量子芝诺效应

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摘要

Detailed schemes are investigated for experimental verification of Quantum Zeno effect with a superconducting qubit. A superconducting qubit is affected by a dephasing noise whose spectrum is 1 /f and so the decay process of a superconducting qubit shows a naturally nonexponential behavior due to an infinite correlation time of 1 /f noise. Since projective measurements can easily influence the decay dynamics having such nonexponential feature, a superconducting qubit is a promising system to observe quantum Zeno effect. We have studied how a sequence of projective measurements can change the dephasing process and also we have suggested experimental ways to observe quantum Zeno effect with a superconducting qubit. It would be possible to demonstrate our prediction in the current technology.

机译：研究了详细的方案，用于用超导量子位对量子芝诺效应进行实验验证。超导量子位受到频谱为1 / f的移相噪声的影响，因此，由于1 / f噪声的无限相关时间，超导量子位的衰减过程显示出自然的非指数行为。由于射影测量很容易影响具有这种非指数特征的衰减动力学，因此超导量子比特是观察量子芝诺效应的有前途的系统。我们研究了一系列射影测量如何改变相移过程，还提出了实验方法来观察超导量子位的量子芝诺效应。有可能证明我们对当前技术的预测。

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来源
《Physical review》 |2010年第18期|p.180518.1-180518.4|共4页
作者
Y. Matsuzaki; S. Saito; K. Kakuyanagi; K. Semba;
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作者单位

NTT Basic Research Laboratories, NTT Corporation, Kanagawa 243-0198, Japan;

NTT Basic Research Laboratories, NTT Corporation, Kanagawa 243-0198, Japan;

NTT Basic Research Laboratories, NTT Corporation, Kanagawa 243-0198, Japan;

NTT Basic Research Laboratories, NTT Corporation, Kanagawa 243-0198, Japan;

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正文语种 eng
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theories and models of superconducting state; superconducting logic elements and memory devices; microelectronic circuits; tunneling; traversal time; quantum zeno dynamics; decoherence; open systems; quantum statistical methods;

机译：超导状态的理论和模型;超导逻辑元件和存储设备;微电子电路;隧道穿越时间;量子zeno动力学退相干开放系统;量子统计方法;

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Quantum Zeno effect with a superconducting qubit

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