Simulating Feedback Cooling of Incoherent Quantum Mixtures

• URL: http://arxiv.org/abs/2408.17092v2
• Date: Tue, 3 Sep 2024 11:05:33 GMT
• Title: Simulating Feedback Cooling of Incoherent Quantum Mixtures
• Authors: Kaiwen Zhu, Zain Mehdi, Joseph J. Hope, Simon A. Haine,
• Abstract summary: We develop a new approach for efficient and scalable simulations of measurement and control of quantum systems. We benchmark against existing particle-filter methods by simulating measurement based feedback cooling in a two-mode system. We demonstrate through the first successful simulation of measurement-based feedback cooling of an incoherent quasi-1D thermal ensemble to quantum degeneracy.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We develop a new approach for efficient and scalable simulations of measurement and control of quantum systems built upon existing phase-space methods, namely the Truncated Wigner Approximation (TWA). We benchmark against existing particle-filter methods by simulating measurement based feedback cooling in a two-mode system, whose low-dimensional nature permits a computation of an exact solution. The advantage of our method is multi-mode scalability, which we demonstrate through the first successful simulation of measurement-based feedback cooling of an incoherent quasi-1D thermal ensemble to quantum degeneracy. As the underlying principle of our approach exploits a general correspondence between measurement and coherent feedback, we anticipate it is also applicable across a broad range of other quantum control scenarios.

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