Noise-Assisted Feedback Control of Open Quantum Systems for Ground State Properties

• URL: http://arxiv.org/abs/2510.18984v1
• Date: Tue, 21 Oct 2025 18:06:36 GMT
• Title: Noise-Assisted Feedback Control of Open Quantum Systems for Ground State Properties
• Authors: Kasturi Ranjan Swain, Rajesh K. Malla, Adolfo del Campo,
• Abstract summary: Intrinsic noise in pre-fault-tolerant quantum devices poses a major challenge to reliable realization of unitary dynamics.<n>We present a method for simulating open quantum system dynamics on a quantum computer, including negative dissipation rates.<n>We develop a quantum algorithm for calculating ground-state properties that exploits feedback-controlled, noise-assisted dynamics.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Intrinsic noise in pre-fault-tolerant quantum devices poses a major challenge to the reliable realization of unitary dynamics in quantum algorithms and simulations. To address this, we present a method for simulating open quantum system dynamics on a quantum computer, including negative dissipation rates in the Gorini-Kossakowski-Sudarshan-Lindblad (GKSL) master equation. Our approach lies beyond the standard Markovian approximation, enabling the controlled study of non-Markovian processes within a quantum simulation framework. Using this method, we develop a quantum algorithm for calculating ground-state properties that exploits feedback-controlled, noise-assisted dynamics. In this scheme, Lyapunov-based feedback steers the system toward a target virtual state under engineered noise conditions. This framework offers a promising strategy for harnessing current quantum hardware and advancing robust control protocols based on open system dynamics.

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