通过 phaseonium 驱动的级联系统动力学实现加热与冷却过程
Heating and cooling processes via phaseonium-driven dynamics of cascade systems
AI总结：
本文研究双腔级联系统与 phaseonium 原子束的相互作用，通过调节原子相干相位实现腔场的可控加热与冷却。
摘要：
寻找调控量子系统温度的策略是量子热力学的主要目标之一。本文研究由一对量子谐振子（以单模腔场表示）组成的系统的动力学，这些谐振子与充当 ancilla（辅助系统）的、受热激发的 phaseonium 原子束相互作用。两个腔以级联构型排列，因此第二个腔只有在 phaseonium 原子与第一个腔相互作用之后才与这些原子相互作用。我们给出了第一个腔在任意长相互作用时间下的精确封闭动力学。我们强调了 phaseonium 原子的特征相干相位在决定腔场以及 ancilla 的稳态方面所起的作用。此外，我们展示了第二个腔如何因与“已使用”的 ancilla 原子相互作用而遵循非马尔可夫演化，这使其能够与第一个腔进行信息交换。通过调节 phaseonium 原子的参数，我们可以决定腔达到的最终稳定温度。以此方式，腔既可以被加热，也可以被冷却。这些结果为在腔 QED 场景中使用不同类型的 ancilla 进行热力学循环提供了有益的见解。
英文摘要：
The search for strategies to harness the temperature of quantum systems is one of the main goals in quantum thermodynamics. Here we study the dynamics of a system made of a pair of quantum harmonic oscillators, represented by single-mode cavity fields, interacting with a thermally excited beam of phaseonium atoms, which act as ancillas. The two cavities are arranged in a cascade configuration, so that the second cavity interacts with phaseonium atoms only after their interaction with the first one. We provide exact closed dynamics of the first cavity for arbitrarily long interaction times. We highlight the role played by the characteristic coherence phase of phaseonium atoms in determining the steady states of the cavity fields as well as that of the ancillas. Also, we show how the second cavity follows a non-Markovian evolution due to interactions with the "used" ancillary atoms, that enables information exchange with the first cavity. Adjusting the parameters of the phaseonium atoms, we can determine the final stable temperature reached by the cavities. In this way, the cavities can be heated up as well as cooled down. These results provide useful insights towards the use of different types of ancillas for thermodynamic cycles in cavity QED scenarios.
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