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Article: Quantum communication through devices with indefinite input-output direction
Title | Quantum communication through devices with indefinite input-output direction |
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Authors | |
Keywords | indefinite input-output direction quantum causal structure quantum communication quantum time flip |
Issue Date | 1-Apr-2023 |
Publisher | IOP Publishing |
Citation | New Journal of Physics, 2023, v. 25, n. 4 How to Cite? |
Abstract | Certain quantum devices, such as half-wave plates and quarter-wave plates in quantum optics, are bidirectional, meaning that the roles of their input and output ports can be exchanged. Bidirectional devices can be used in a forward mode and a backward mode, corresponding to two opposite choices of the input-output direction. They can also be used in a coherent superposition of the forward and backward modes, giving rise to new operations with indefinite input-output direction. In this work we explore the potential of input-output indefiniteness for the transfer of classical and quantum information through noisy channels. We first formulate a model of communication from a sender to a receiver via a noisy channel used in indefinite input-output direction. Then, we show that indefiniteness of the input-output direction yields advantages over standard communication protocols in which the given noisy channel is used in a fixed input-output direction. These advantages range from a general reduction of noise in bidirectional processes, to heralded noiseless transmission of quantum states, and, in some special cases, to a complete noise removal. The noise reduction due to input-output indefiniteness can be experimentally demonstrated with current photonic technologies, providing a way to investigate the operational consequences of exotic scenarios characterised by coherent quantum superpositions of forward-time and backward-time processes. |
Persistent Identifier | http://hdl.handle.net/10722/331894 |
ISSN | 2023 Impact Factor: 2.8 2023 SCImago Journal Rankings: 1.090 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Liu, ZX | - |
dc.contributor.author | Yang, M | - |
dc.contributor.author | Chiribella, G | - |
dc.date.accessioned | 2023-09-28T04:59:26Z | - |
dc.date.available | 2023-09-28T04:59:26Z | - |
dc.date.issued | 2023-04-01 | - |
dc.identifier.citation | New Journal of Physics, 2023, v. 25, n. 4 | - |
dc.identifier.issn | 1367-2630 | - |
dc.identifier.uri | http://hdl.handle.net/10722/331894 | - |
dc.description.abstract | Certain quantum devices, such as half-wave plates and quarter-wave plates in quantum optics, are bidirectional, meaning that the roles of their input and output ports can be exchanged. Bidirectional devices can be used in a forward mode and a backward mode, corresponding to two opposite choices of the input-output direction. They can also be used in a coherent superposition of the forward and backward modes, giving rise to new operations with indefinite input-output direction. In this work we explore the potential of input-output indefiniteness for the transfer of classical and quantum information through noisy channels. We first formulate a model of communication from a sender to a receiver via a noisy channel used in indefinite input-output direction. Then, we show that indefiniteness of the input-output direction yields advantages over standard communication protocols in which the given noisy channel is used in a fixed input-output direction. These advantages range from a general reduction of noise in bidirectional processes, to heralded noiseless transmission of quantum states, and, in some special cases, to a complete noise removal. The noise reduction due to input-output indefiniteness can be experimentally demonstrated with current photonic technologies, providing a way to investigate the operational consequences of exotic scenarios characterised by coherent quantum superpositions of forward-time and backward-time processes. | - |
dc.language | eng | - |
dc.publisher | IOP Publishing | - |
dc.relation.ispartof | New Journal of Physics | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | indefinite input-output direction | - |
dc.subject | quantum causal structure | - |
dc.subject | quantum communication | - |
dc.subject | quantum time flip | - |
dc.title | Quantum communication through devices with indefinite input-output direction | - |
dc.type | Article | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1088/1367-2630/acc8f2 | - |
dc.identifier.scopus | eid_2-s2.0-85153501513 | - |
dc.identifier.volume | 25 | - |
dc.identifier.issue | 4 | - |
dc.identifier.eissn | 1367-2630 | - |
dc.identifier.isi | WOS:000974189700001 | - |
dc.publisher.place | BRISTOL | - |
dc.identifier.issnl | 1367-2630 | - |