2025/08/18 by B. R. Pan, Pan, Bo-Syun, Yen‐Hsiang Lin +3
Computer Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #FOS: Physical sciences #Nonlinear Dynamics and Pattern Formation #Quantum Physics (quant-ph) #Quantum chaos and dynamical systems
paper · pdf · doi:10.48550/arxiv.2508.13150
openalex publication_date 2025/08/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Dispersive readout plays a central role in superconducting quantum computing, enabling quantum nondemolition measurements through a coupled microwave resonator. While stronger resonator drives can improve measurement speed and fidelity, they can also activate multi-photon resonances that trigger measurement-induced state transitions (MIST) out of the computational subspace. We develop a driven-dissipative framework for MIST that retains the quantum resonator response absent in semiclassical treatments and yields analytically derived transition-rate expressions. The upward and downward transition-rate profiles determine the steady-state populations and finite-time dynamics, enabling quantitative exploration across drive strength and detuning, while capturing the crossover between quantum-resolved and semiclassical-like dynamics. This framework reproduces the quantum dynamics and identifies a strongly driven regime beyond semiclassical Landau--Zener predictions, where delayed population transfer opens a finite-time readout window with high resonator photon population. These results establish MIST as a predictive driven-dissipative process and characterize strongly driven regimes that can be leveraged for measurement optimization.