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arXiv · 2508.13150

Driven-Dissipative Dynamics of Measurement-Induced State Transitions

Bo-Syun Pan·Yen-Hsiang Lin·Chiao-Hsuan Wang
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Abstract

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.

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Bo-Syun Pan, Yen-Hsiang Lin, Chiao-Hsuan Wang. 2025-08-18. Driven-Dissipative Dynamics of Measurement-Induced State Transitions. https://arxiv.org/abs/2508.13150

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