Computation-Aided Classical-Quantum Multiple Access to Boost Network Communication Speeds

Hayashi，Masahito1,2,3; Vázquez-Castro，Ángeles4

2021-11-01

10.1103/PhysRevApplied.16.054021

Physical Review Applied   影响因子和分区

2331-7019

2331-7019

A multiple access channel (MAC) consists of multiple senders simultaneously transmitting their messages to a single receiver. For the classical-quantum case (CQ MAC), achievable rates are known assuming that all the messages are decoded, a common assumption in quantum network design. However, such a conventional design approach ignores the global network structure, i.e., the network topology. When a CQ MAC is given as a part of quantum network communication, this work shows that computation properties can be used to boost communication speeds with code design dependent on the network topology. We quantify achievable quantum communication rates of codes with the computation property for a two-sender CQ MAC. When the two-sender CQ MAC is a boson coherent channel with binary discrete modulation, we show that it achieves the maximum possible communication rate (the single-user capacity), which cannot be achieved with conventional design. Further, such a rate can be achieved by different detection methods: quantum (with and without quantum memory), on-off photon counting, and homodyne (each at different photon power). Finally, we describe two practical applications, one of which cryptographic.

SCI ; EI

英语

第一

Guangdong Provincial Key Laboratory[2019B121203002]

Physics

Physics, Applied

WOS:000718571800002

AMER PHYSICAL SOC

20214711190248

Codes (symbols) ; Photons ; Topology

Telecommunication; Radar, Radio and Television:716 ; Data Processing and Image Processing:723.2 ; Combinatorial Mathematics, Includes Graph Theory, Set Theory:921.4 ; Atomic and Molecular Physics:931.3

2-s2.0-85119190664

Scopus

1.Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Guangdong Provincial Key Laboratory of Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Graduate School of Mathematics,Nagoya University,Nagoya,464-8602,Japan
4.Department of Telecommunications and Systems Engineering,Centre for Space Research (CERES),Institut d'Estudis Espacials de Catalunya (IEEC-UAB),Universitat Autònoma de Barcelona,Barcelona,Bellaterra,08193,Spain

Hayashi，Masahito,Vázquez-Castro，Ángeles. Computation-Aided Classical-Quantum Multiple Access to Boost Network Communication Speeds[J]. Physical Review Applied,2021,16(4).

Hayashi，Masahito,&Vázquez-Castro，Ángeles.(2021).Computation-Aided Classical-Quantum Multiple Access to Boost Network Communication Speeds.Physical Review Applied,16(4).

Hayashi，Masahito,et al."Computation-Aided Classical-Quantum Multiple Access to Boost Network Communication Speeds".Physical Review Applied 16.4(2021).