近日，印度加尔各答科技研究和教育中心的Subhadeep Chakraborty与新加坡国立大学的Manas Mukherjee合作并取得一项新进展。他们实现了热流的量子控制。相关研究成果已于2024年10月21日在国际知名学术期刊《物理评论A》上发表。

该研究团队研究了含几何相位的玻色三聚体中局部热流的稳态内部环流。该系统由两个处于不同温度的外部热库驱动，在热平衡状态下，其两个位点间展现出非互易电流，且不违反热力学第零定律。

值得注意的是，该研究探讨了内部跃迁幅度相对于系统耗散率处于弱耦合和强耦合机制下的极限情况。

强耦合机制下非互易性依然存在，而研究人员观察到了非平衡电流中的一种新型相位反转现象。研究人员讨论了其实验可行性，并提出了实现量子控温器件的激动人心的新可能性。

附：英文原文

Title: Quantum control of heat current

Author: Gobinda Chakraborty, Subhadeep Chakraborty, Tanmoy Basu, Manas Mukherjee

Issue&Volume: 2024/10/21

Abstract: We study the steady-state, internal current circulation of local thermal currents in a bosonic trimer with a geometric phase inside it. Driven by two external reservoirs at different temperatures, the system exhibits a nonreciprocal current between two of its sites in thermal equilibrium, without violating the zeroth law of thermodynamics. Notably, our study explores both the limits where the internal hopping amplitude falls within weak- and strong-coupling regimes, relative to the system's dissipation rates. While nonreciprocity persists in the strong-coupling regime, we observe a novel phase reversal in the nonequilibrium current. We discuss its experimental feasibility and propose exciting new possibilities for implementing quantum-controlled heat devices.

DOI: 10.1103/PhysRevA.110.042216

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.110.042216