Noise is resource-contextual in quantum communication
Fuente:
arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866909267038044160 |
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| author | Nema, Aditya Maity, Ananda G. Strelchuk, Sergii Elkouss, David |
| author_facet | Nema, Aditya Maity, Ananda G. Strelchuk, Sergii Elkouss, David |
| contents | Estimating the information transmission capability of a quantum channel remains one of the fundamental problems in quantum information processing. In contrast to classical channels, the information-carrying capability of quantum channels is contextual. One of the most significant manifestations of this is the superadditivity of the channel capacity: the capacity of two quantum channels used together can be larger than the sum of the individual capacities. Here, we present a one-parameter family of channels for which as the parameter increases its one-way quantum and private capacities increase while its two-way capacities decrease. We also exhibit a one-parameter family of states with analogous behavior with respect to the one- and two-way distillable entanglement and secret key. Our constructions demonstrate that noise is context dependent in quantum communication. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_00680 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Noise is resource-contextual in quantum communication Nema, Aditya Maity, Ananda G. Strelchuk, Sergii Elkouss, David Quantum Physics Information Theory Estimating the information transmission capability of a quantum channel remains one of the fundamental problems in quantum information processing. In contrast to classical channels, the information-carrying capability of quantum channels is contextual. One of the most significant manifestations of this is the superadditivity of the channel capacity: the capacity of two quantum channels used together can be larger than the sum of the individual capacities. Here, we present a one-parameter family of channels for which as the parameter increases its one-way quantum and private capacities increase while its two-way capacities decrease. We also exhibit a one-parameter family of states with analogous behavior with respect to the one- and two-way distillable entanglement and secret key. Our constructions demonstrate that noise is context dependent in quantum communication. |
| title | Noise is resource-contextual in quantum communication |
| topic | Quantum Physics Information Theory |
| url | https://arxiv.org/abs/2305.00680 |