当前位置: X-MOL 学术Phys. Rev. Lett. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Thermodynamics of Quantum Switch Information Capacity Activation
Physical Review Letters ( IF 8.6 ) Pub Date : 2022-12-01 , DOI: 10.1103/physrevlett.129.230604
Xiangjing Liu 1 , Daniel Ebler 2, 3 , Oscar Dahlsten 1
Affiliation  

We address a new setting where the second law is under question: thermalizations in a quantum superposition of causal orders, enacted by the so-called quantum switch. This superposition has been shown to be associated with an increase in the communication capacity of the channels, yielding an apparent violation of the data-processing inequality and a possibility to separate hot from cold. We analyze the thermodynamics of this information capacity increasing process. We show how the information capacity increase is compatible with thermodynamics. We show that there may indeed be an information capacity increase for consecutive thermalizations obeying the first and second laws of thermodynamics if these are placed in an indefinite order and moreover that only a significantly bounded increase is possible. The increase comes at the cost of consuming a thermodynamic resource, the free energy of coherence associated with the switch.

中文翻译:

量子开关信息容量激活的热力学

我们解决了第二定律受到质疑的新设置:因果顺序的量子叠加中的热化,由所谓的量子开关制定。这种叠加已被证明与通道通信容量的增加有关,从而明显违反了数据处理的不平等性,并有可能将冷热分开。我们分析了这个信息容量增加过程的热力学。我们展示了信息容量的增加如何与热力学兼容。我们表明,如果连续热化以不确定的顺序放置,则遵循热力学第一和第二定律的信息容量确实可能会增加,而且只有显着有界的增加是可能的。
更新日期:2022-12-01
down
wechat
bug