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arXiv · 1006.2133

Quantum Zeno effect with a superconducting qubit

Yuichiro Matsuzaki·Shiro Saito·Kosuke Kakuyanagi·Kouichi Semba
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Abstract

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 non-exponential behavior due to an infinite correlation time of 1/f noise. Since projective measurements can easily influence the decay dynamics having such non-exponential 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.

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Yuichiro Matsuzaki, Shiro Saito, Kosuke Kakuyanagi, Kouichi Semba. 2010-10-06. Quantum Zeno effect with a superconducting qubit. https://doi.org/10.1103/physrevb.82.180518

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