Quantum Zeno effect with a superconducting qubit

TL;DR

This paper explores how the Quantum Zeno effect can be observed in superconducting qubits affected by 1/f noise, proposing experimental schemes to verify the phenomenon with current technology.

Contribution

It introduces experimental schemes for observing the Quantum Zeno effect in superconducting qubits influenced by 1/f noise, highlighting the impact of projective measurements on non-exponential decay.

Findings

Projective measurements can alter the non-exponential decay of superconducting qubits.

Superconducting qubits are suitable for observing the Quantum Zeno effect.

Proposed experimental methods are feasible with current technology.

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.