Coherence-assisted single-shot cooling by quantum absorption refrigerators

By M. Mitchison, M. P. Woods, J. Prior, Marcus Huber. 2015

141 citations recorded by the source corpus.

The extension of thermodynamics into the quantum regime has received much attention in recent years. A primary objective of current research is to find thermodynamic tasks which can be enhanced by quantum mechanical effects. With this goal in mind, we explore the finite-time dynamics of absorption refrigerators composed of three quantum bits (qubits). The aim of this finite-time cooling is to reach low temperatures as fast as possible and subsequently extract the cold particle to exploit it for information processing purposes. We show that the coherent oscillations inherent to quantum dynamics can be harnessed to reach temperatures that are colder than the steady state in orders of magnitude less time, thereby providing a fast source of low-entropy qubits. This effect demonstrates that quantum thermal machines can surpass classical ones, reminiscent of quantum advantages in other fields, and is applicable to a broad range of technologically important scenarios.

Subfields: Atomic and Molecular Physics, and Optics, Civil and Structural Engineering, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/403c6a3e8a5b69b6e178e63e8d2bc6392968e97b

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In Atomic and Molecular Physics, and Optics

In Civil and Structural Engineering

In Statistical and Nonlinear Physics

Citations in the corpus

The role of quantum information in thermodynamics—a topical review (2015, background): “More precisely, in [230] the authors study the Markovian dynamics with weak inter-qubit coupling g (relative to the relaxation rates, as in the above subsection), while in [229] the authors considered additionally Markovian dynamics with strong inter-qubit coupling, and band-limited non-Markovian ba”
Quantum Fluctuation Theorems for Arbitrary Environments: Adiabatic and Nonadiabatic Entropy Production (2017, background): “For instance it has been recently pointed that initial coherence can be used to reach lower temperatures during the transient dynamics [83, 84].”