2010/06/30 by Yuichiro Matsuzaki, Shiro Saito, Kosuke Kakuyanagi +1 · 1 citation
Physics and Astronomy · #quant-ph #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.82.180518
arxiv created 2010/10/06 · arxiv updated 2013/05/29
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.