The application of annealing in quantum cooling protocols
Inspired by simulated annealing algorithm, we propose a quantum cooling protocol which includes an annealing process. This protocol can be universally and efficiently applied to various quantum simulators, driving the system from an arbitrary initial state to the ground state with high fidelity. We...
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Zusammenfassung: | Inspired by simulated annealing algorithm, we propose a quantum cooling
protocol which includes an annealing process. This protocol can be universally
and efficiently applied to various quantum simulators, driving the system from
an arbitrary initial state to the ground state with high fidelity. We have
described the cooling process based on perturbation theory, validated the
advantages of bath under time-modulated Zeeman field compared to bath under
static one, and provided a justification for the necessity of an annealing
process when the system to be cooled is unknown. We applied tensor network
methods to numerically simulate our cooling protocol, using the transverse
field Ising model (TFIM) as an example to verify the effectiveness of the
protocol in cooling one-dimensional systems, two-dimensional systems, and
systems with quantum noise. We compared the overall performance of cooling
protocols with and without the annealing process on a test set generated with
random parameters $g_P$. The results indicate that the cooling protocol with
annealing process can achieve both accuracy and efficiency. Our results also
show that the cooling protocol's resistance to noise depends on the type of
quantum noise. |
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DOI: | 10.48550/arxiv.2501.05268 |