Dynamics of measurement-induced state transitions in superconducting qubits

2024/02/08 by Yuta Hirasaki, Hirasaki, Yuta, Shunsuke Daimon +9 · 2 citations
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #FOS: Physical sciences #Quantum Physics (quant-ph)

paper · pdf · doi:10.48550/arxiv.2402.05409

openalex publication_date 2024/02/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We have investigated temporal fluctuation of superconducting qubits via the time-resolved measurement for an IBM Quantum system. We found that the qubit error rate abruptly changes during specific time intervals. Each high error state persists for several tens of seconds, and exhibits an on-off behavior. The observed temporal instability can be attributed to qubit transitions induced by a measurement stimulus. Resonant transition between fluctuating dressed states of the qubits coupled with high-frequency resonators can be responsible for the error-rate change.

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• Mitigation of Measurement-Induced State Transitions via a Fast-Load and Fast-Clear Readout
• Shift of quantum critical point of discrete time crystal on a noisy quantum simulator

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