Experimental quantum communication enhancement by superposing trajectories
In quantum communication networks, wires represent well-defined trajectories along which quantum systems are transmitted. In spite of this, trajectories can be used as a quantum control to govern the order of different noisy communication channels, and such a control has been shown to enable the tra...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2021-01-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.3.013093 |
| _version_ | 1797211132634595328 |
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| author | Giulia Rubino Lee A. Rozema Daniel Ebler Hlér Kristjánsson Sina Salek Philippe Allard Guérin Alastair A. Abbott Cyril Branciard Časlav Brukner Giulio Chiribella Philip Walther |
| author_facet | Giulia Rubino Lee A. Rozema Daniel Ebler Hlér Kristjánsson Sina Salek Philippe Allard Guérin Alastair A. Abbott Cyril Branciard Časlav Brukner Giulio Chiribella Philip Walther |
| author_sort | Giulia Rubino |
| collection | DOAJ |
| description | In quantum communication networks, wires represent well-defined trajectories along which quantum systems are transmitted. In spite of this, trajectories can be used as a quantum control to govern the order of different noisy communication channels, and such a control has been shown to enable the transmission of information even when quantum communication protocols through well-defined trajectories fail. This result has motivated further investigations on the role of the superposition of trajectories in enhancing communication, which revealed that the use of quantum control of parallel communication channels, or of channels in series with quantum-controlled operations, can also lead to communication advantages. Building upon these findings, here we experimentally and numerically compare different ways in which two trajectories through a pair of noisy channels can be superposed. We observe that, within the framework of quantum interferometry, the use of channels in series with quantum-controlled operations generally yields the largest advantages. Our results contribute to clarify the nature of these advantages in experimental quantum-optical scenarios, and showcase the benefit of an extension of the quantum communication paradigm in which both the information exchanged and the trajectory of the information carriers are quantum. |
| first_indexed | 2024-04-24T10:21:38Z |
| format | Article |
| id | doaj.art-69c02f9cae1e4226b94f4a6365f2c71a |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:21:38Z |
| publishDate | 2021-01-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-69c02f9cae1e4226b94f4a6365f2c71a2024-04-12T17:06:54ZengAmerican Physical SocietyPhysical Review Research2643-15642021-01-013101309310.1103/PhysRevResearch.3.013093Experimental quantum communication enhancement by superposing trajectoriesGiulia RubinoLee A. RozemaDaniel EblerHlér KristjánssonSina SalekPhilippe Allard GuérinAlastair A. AbbottCyril BranciardČaslav BruknerGiulio ChiribellaPhilip WaltherIn quantum communication networks, wires represent well-defined trajectories along which quantum systems are transmitted. In spite of this, trajectories can be used as a quantum control to govern the order of different noisy communication channels, and such a control has been shown to enable the transmission of information even when quantum communication protocols through well-defined trajectories fail. This result has motivated further investigations on the role of the superposition of trajectories in enhancing communication, which revealed that the use of quantum control of parallel communication channels, or of channels in series with quantum-controlled operations, can also lead to communication advantages. Building upon these findings, here we experimentally and numerically compare different ways in which two trajectories through a pair of noisy channels can be superposed. We observe that, within the framework of quantum interferometry, the use of channels in series with quantum-controlled operations generally yields the largest advantages. Our results contribute to clarify the nature of these advantages in experimental quantum-optical scenarios, and showcase the benefit of an extension of the quantum communication paradigm in which both the information exchanged and the trajectory of the information carriers are quantum.http://doi.org/10.1103/PhysRevResearch.3.013093 |
| spellingShingle | Giulia Rubino Lee A. Rozema Daniel Ebler Hlér Kristjánsson Sina Salek Philippe Allard Guérin Alastair A. Abbott Cyril Branciard Časlav Brukner Giulio Chiribella Philip Walther Experimental quantum communication enhancement by superposing trajectories Physical Review Research |
| title | Experimental quantum communication enhancement by superposing trajectories |
| title_full | Experimental quantum communication enhancement by superposing trajectories |
| title_fullStr | Experimental quantum communication enhancement by superposing trajectories |
| title_full_unstemmed | Experimental quantum communication enhancement by superposing trajectories |
| title_short | Experimental quantum communication enhancement by superposing trajectories |
| title_sort | experimental quantum communication enhancement by superposing trajectories |
| url | http://doi.org/10.1103/PhysRevResearch.3.013093 |
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