Universality of stochastic control of quantum chaos with measurement and feedback
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866917292988694528 |
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| author | Allocca, Andrew A. Verma, Devesh K. Ganeshan, Sriram Wilson, Justin H. |
| author_facet | Allocca, Andrew A. Verma, Devesh K. Ganeshan, Sriram Wilson, Justin H. |
| contents | We investigate universal features of measurement-and-feedback control of quantum chaotic dynamics by examining the quantum Arnold cat map, a paradigmatic model of quantum chaos. Inspired by probabilistic control of classical chaos, our protocol stochastically alternates between intrinsic instability and engineered control operations that steer trajectories toward a target point. Simulation of exact quantum dynamics and a semiclassical truncated Wigner approximation reveal universal properties of the cat map's control transition. To further characterize this universality, we introduce the inverted harmonic oscillator as an analytically tractable effective model of instability. By integrating numerical simulations, a semiclassical Fokker-Planck description, and a direct spectral analysis of the stochastic quantum channel, we identify quantum signatures absent in classical limits. The close agreement between quantum simulation, truncated Wigner approximation, and inverted oscillator analysis shows that universal features of the transition are set by uncertainty-limited quantum fluctuations and are insensitive to genuine quantum interference. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_10067 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Universality of stochastic control of quantum chaos with measurement and feedback Allocca, Andrew A. Verma, Devesh K. Ganeshan, Sriram Wilson, Justin H. Quantum Physics Disordered Systems and Neural Networks Statistical Mechanics Chaotic Dynamics We investigate universal features of measurement-and-feedback control of quantum chaotic dynamics by examining the quantum Arnold cat map, a paradigmatic model of quantum chaos. Inspired by probabilistic control of classical chaos, our protocol stochastically alternates between intrinsic instability and engineered control operations that steer trajectories toward a target point. Simulation of exact quantum dynamics and a semiclassical truncated Wigner approximation reveal universal properties of the cat map's control transition. To further characterize this universality, we introduce the inverted harmonic oscillator as an analytically tractable effective model of instability. By integrating numerical simulations, a semiclassical Fokker-Planck description, and a direct spectral analysis of the stochastic quantum channel, we identify quantum signatures absent in classical limits. The close agreement between quantum simulation, truncated Wigner approximation, and inverted oscillator analysis shows that universal features of the transition are set by uncertainty-limited quantum fluctuations and are insensitive to genuine quantum interference. |
| title | Universality of stochastic control of quantum chaos with measurement and feedback |
| topic | Quantum Physics Disordered Systems and Neural Networks Statistical Mechanics Chaotic Dynamics |
| url | https://arxiv.org/abs/2506.10067 |