Quantum Zeno effect with a superconducting qubit

  • Matsuzaki Y
  • Saito S
  • Kakuyanagi K
 et al. 
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Abstract

Detailed schemes are investigated for experimental verification of Quantum Zeno effect with a superconduct- ing 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 sug- gested 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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Authors

  • Y Matsuzaki

  • S Saito

  • K Kakuyanagi

  • K Semba

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