| Full text | |
| Author(s): |
Total Authors: 2
|
| Affiliation: | [1] Univ Fed Rural Pernambuco, Unidade Educ Distancia & Tecnol, BR-52171900 Recife, PE - Brazil
[2] Univ Sao Paulo, Inst Fis, BR-05314970 Sao Paulo, SP - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW RESEARCH; v. 2, n. 3 JUL 16 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
Onsager's relations allow one to express the second law of thermodynamics in terms of the underlying associated currents. These relations, however, are usually valid only close to equilibrium. Using a quantum phase space formulation of the second law, we show that open bosonic Gaussian systems also obey a set of Onsager relations, valid arbitrarily far from equilibrium. These relations, however, are found to be given by a more complex nonlinear function, which reduces to the usual quadratic form close to equilibrium. This nonlinearity implies that in Gaussian models far from equilibrium, there exists a fundamental asymmetry between entropy flow from the system to the bath and vice versa. The ramifications of this for applications in driven-dissipative quantum optical setups are also discussed. (AU) | |
| FAPESP's process: | 17/50304-7 - Entropy production in non-equilibrium quantum processes: from foundations to quantum technologies |
| Grantee: | Gabriel Teixeira Landi |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 17/07973-5 - Thermodynamics and information technologies with continuous variable quantum systems |
| Grantee: | Gabriel Teixeira Landi |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 18/12813-0 - Quantum thermodynamics of bosonic systems |
| Grantee: | Gabriel Teixeira Landi |
| Support Opportunities: | Regular Research Grants |