Entanglement-assisted capacity regions and protocol designs for quantum multiple-access channels

Shi, H; Hsieh, MH; Guha, S; Zhang, Z; Zhuang, Q

Entanglement-assisted capacity regions and protocol designs for quantum multiple-access channels

Shi, H Hsieh, MH Guha, S Zhang, Z Zhuang, Q

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Publisher:: Springer Nature
Publication Type:: Journal Article
Citation:: npj Quantum Information, 2021, 7, (1), pp. 74
Issue Date:: 2021-12-01

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Field	Value	Language
dc.contributor.author	Shi, H
dc.contributor.author	Hsieh, MH
dc.contributor.author	Guha, S
dc.contributor.author	Zhang, Z
dc.contributor.author	Zhuang, Q
dc.date.accessioned	2023-04-20T22:41:47Z
dc.date.available	2023-04-20T22:41:47Z
dc.date.issued	2021-12-01
dc.identifier.citation	npj Quantum Information, 2021, 7, (1), pp. 74
dc.identifier.issn	2056-6387
dc.identifier.issn	2056-6387
dc.identifier.uri	http://hdl.handle.net/10453/170041
dc.description.abstract	We solve the entanglement-assisted (EA) classical capacity region of quantum multiple-access channels (MACs) with an arbitrary number of senders. As an example, we consider the bosonic thermal-loss MAC and solve the one-shot capacity region enabled by an entanglement source composed of sender-receiver pairwise two-mode squeezed vacuum states. The EA capacity region is strictly larger than the capacity region without entanglement-assistance. With two-mode squeezed vacuum states as the source and phase modulation as the encoding, we also design practical receiver protocols to realize the entanglement advantages. Four practical receiver designs, based on optical parametric amplifiers, are given and analyzed. In the parameter region of a large noise background, the receivers can enable a simultaneous rate advantage of 82.0% for each sender. Due to teleportation and superdense coding, our results for EA classical communication can be directly extended to EA quantum communication at half of the rates. Our work provides a unique and practical network communication scenario where entanglement can be beneficial.
dc.language	en
dc.publisher	Springer Nature
dc.relation.ispartof	npj Quantum Information
dc.relation.isbasedon	10.1038/s41534-021-00412-3
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Entanglement-assisted capacity regions and protocol designs for quantum multiple-access channels
dc.type	Journal Article
utslib.citation.volume	7
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - QSI - Centre for Quantum Software and Information
utslib.copyright.status	open_access	*
dc.date.updated	2023-04-20T22:41:46Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	7
utslib.citation.issue	1

Abstract:

We solve the entanglement-assisted (EA) classical capacity region of quantum multiple-access channels (MACs) with an arbitrary number of senders. As an example, we consider the bosonic thermal-loss MAC and solve the one-shot capacity region enabled by an entanglement source composed of sender-receiver pairwise two-mode squeezed vacuum states. The EA capacity region is strictly larger than the capacity region without entanglement-assistance. With two-mode squeezed vacuum states as the source and phase modulation as the encoding, we also design practical receiver protocols to realize the entanglement advantages. Four practical receiver designs, based on optical parametric amplifiers, are given and analyzed. In the parameter region of a large noise background, the receivers can enable a simultaneous rate advantage of 82.0% for each sender. Due to teleportation and superdense coding, our results for EA classical communication can be directly extended to EA quantum communication at half of the rates. Our work provides a unique and practical network communication scenario where entanglement can be beneficial.

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http://hdl.handle.net/10453/170041