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arXiv 1702.08672quant-phphysics.atom-ph
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囚禁离子的量子吸收制冷机

Quantum absorption refrigerator with trapped ions

Gleb Maslennikov, Shiqian Ding, Roland Hablutzel, Jaren Gan, Alexandre Roulet, Stefan Nimmrichter, Jibo Dai, Valerio Scarani, Dzmitry Matsukevich

备注：
11 pages, 7 figures, 2 tables
发表信息：
Nature Communications 10, 202 (2019)
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摘要：

热力学是物理学中最古老、最成熟的分支之一，它为宏观系统中可能实现的目标设定了边界。虽然它开始作为一个纯粹的经典理论，但在量子力学的早期，人们意识到大型量子器件，如微波激射器或激光器，可以用热力学形式主义来处理。最近在热机的小型化方面取得了显著的进展，一直到单个布朗粒子以及单个原子。然而，尽管有一些理论上的建议，在完全量子机制中实现热机仍然是一个挑战。在这里，我们报告了一个实验实现的量子吸收式制冷机在一个系统中的三个被困离子，其三个正常的运动模式耦合的三线性哈密顿量，使两种模式之间的热传递制冷的第三个。我们研究了该制冷机的动力学和稳态性质，并比较了它的冷却能力时，只涉及到热态的情况下，压缩作为一种量子资源。我们还研究了这样的冰箱在Single Shot制度的性能，并证明冷却低于稳态能量和基准预测的经典热力学处理。

英文摘要：

Thermodynamics is one of the oldest and well-established branches of physics that sets boundaries to what can possibly be achieved in macroscopic systems. While it started as a purely classical theory, it was realized in the early days of quantum mechanics that large quantum devices, such as masers or lasers, can be treated with the thermodynamic formalism. Remarkable progress has been made recently in the miniaturization of heat engines all the way to the single Brownian particle as well as to a single atom. However, despite several theoretical proposals, the implementation of heat machines in the fully quantum regime remains a challenge. Here, we report an experimental realization of a quantum absorption refrigerator in a system of three trapped ions, with three of its normal modes of motion coupled by a trilinear Hamiltonian such that heat transfer between two modes refrigerates the third. We investigate the dynamics and steady-state properties of the refrigerator and compare its cooling capability when only thermal states are involved to the case when squeezing is employed as a quantum resource. We also study the performance of such a refrigerator in the single shot regime, and demonstrate cooling below both the steady-state energy and the benchmark predicted by the classical thermodynamics treatment.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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