Quantum networks boosted by entanglement with a control system
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2022
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| _version_ | 1866929347216015360 |
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| author | Guha, Tamal Roy, Saptarshi Chiribella, Giulio |
| author_facet | Guha, Tamal Roy, Saptarshi Chiribella, Giulio |
| contents | Networks of quantum devices with coherent control over their configuration offer promising advantages in quantum information processing. So far, the investigation of these advantages assumed that the control system was initially uncorrelated with the data processed by the network. Here, we explore the power of quantum correlations between data and control, showing two communication tasks that can be accomplished with information-erasing channels if and only if the sender shares prior entanglement with a third party (the ``controller'') controlling the network configuration. The first task is to transmit classical messages without leaking information to the controller. The second task is to establish bipartite entanglement with a receiver, or, more generally, to establish multipartite entanglement with a number of spatially separated receivers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2206_05247 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Quantum networks boosted by entanglement with a control system Guha, Tamal Roy, Saptarshi Chiribella, Giulio Quantum Physics Networks of quantum devices with coherent control over their configuration offer promising advantages in quantum information processing. So far, the investigation of these advantages assumed that the control system was initially uncorrelated with the data processed by the network. Here, we explore the power of quantum correlations between data and control, showing two communication tasks that can be accomplished with information-erasing channels if and only if the sender shares prior entanglement with a third party (the ``controller'') controlling the network configuration. The first task is to transmit classical messages without leaking information to the controller. The second task is to establish bipartite entanglement with a receiver, or, more generally, to establish multipartite entanglement with a number of spatially separated receivers. |
| title | Quantum networks boosted by entanglement with a control system |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2206.05247 |