Anomalous heat flow and quantum Otto cycle with indefinite causal order
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2025
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866914141959094272 |
|---|---|
| author | Xue, Qing-Feng Zhang, Qi Zhuang, Xu-Cai Xia, Yun-Jie Russo, Enrico Chiribella, Giulio Franco, Rosario Lo Man, Zhong-Xiao |
| author_facet | Xue, Qing-Feng Zhang, Qi Zhuang, Xu-Cai Xia, Yun-Jie Russo, Enrico Chiribella, Giulio Franco, Rosario Lo Man, Zhong-Xiao |
| contents | The principle that heat spontaneously flows from higher temperature to lower temperature is a cornerstone of classical thermodynamics, often assumed to be independent of the sequence of interactions. While this holds true for macroscopic systems at equilibrium, here we show that, when the order of interactions between two identical thermalization channels is indefinite, an anomalous heat flow emerges, whereby heat can sometime flow from a colder entity to a hotter one. Taking advantage of this anomalous heat flow, we design a quantum Otto cycle with indefinite causal order, which not only achieves refrigeration but also generates work. The anomalous heat flow and the quantum Otto cycle are experimentally simulated in a photonic quantum setup, which provides a proof-of-principle demonstration of the theory. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_04028 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Anomalous heat flow and quantum Otto cycle with indefinite causal order Xue, Qing-Feng Zhang, Qi Zhuang, Xu-Cai Xia, Yun-Jie Russo, Enrico Chiribella, Giulio Franco, Rosario Lo Man, Zhong-Xiao Quantum Physics The principle that heat spontaneously flows from higher temperature to lower temperature is a cornerstone of classical thermodynamics, often assumed to be independent of the sequence of interactions. While this holds true for macroscopic systems at equilibrium, here we show that, when the order of interactions between two identical thermalization channels is indefinite, an anomalous heat flow emerges, whereby heat can sometime flow from a colder entity to a hotter one. Taking advantage of this anomalous heat flow, we design a quantum Otto cycle with indefinite causal order, which not only achieves refrigeration but also generates work. The anomalous heat flow and the quantum Otto cycle are experimentally simulated in a photonic quantum setup, which provides a proof-of-principle demonstration of the theory. |
| title | Anomalous heat flow and quantum Otto cycle with indefinite causal order |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2511.04028 |