Quantum reversal: a general theory of coherent quantum absorbers
Fuente:
arXiv
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| Autor principal: | |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866916643298344960 |
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| author | Tsang, Mankei |
| author_facet | Tsang, Mankei |
| contents | The fascinating concept of coherent quantum absorber - which can absorb any photon emitted by another system while maintaining entanglement with that system - has found diverse implications in open quantum system theory and quantum metrology. This work generalizes the concept by proposing the so-called reversal conditions for the two systems, in which a "reverser" coherently reverses any effect of the other system on a field. The reversal conditions are rigorously boiled down to concise formulas involving the Petz recovery map and Kraus operators, thereby generalizing as well as streamlining the existing treatments of coherent absorbers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_02502 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum reversal: a general theory of coherent quantum absorbers Tsang, Mankei Quantum Physics Mathematical Physics The fascinating concept of coherent quantum absorber - which can absorb any photon emitted by another system while maintaining entanglement with that system - has found diverse implications in open quantum system theory and quantum metrology. This work generalizes the concept by proposing the so-called reversal conditions for the two systems, in which a "reverser" coherently reverses any effect of the other system on a field. The reversal conditions are rigorously boiled down to concise formulas involving the Petz recovery map and Kraus operators, thereby generalizing as well as streamlining the existing treatments of coherent absorbers. |
| title | Quantum reversal: a general theory of coherent quantum absorbers |
| topic | Quantum Physics Mathematical Physics |
| url | https://arxiv.org/abs/2402.02502 |