Resource theories of communication

Kristjansson, Hler1,2,3,4; Chiribella, Giulio1,2,3,4,5,6,7; Salek, Sina1,8; Ebler, Daniel9,10; Wilson, Matthew1,2,3,4

2020-07

10.1088/1367-2630/ab8ef7

NEW JOURNAL OF PHYSICS   影响因子和分区

1367-2630

A series of recent works has shown that placing communication channels in a coherent superposition of alternative configurations can boost their ability to transmit information. Instances of this phenomenon are the advantages arising from the use of communication devices in a superposition of alternative causal orders, and those arising from the transmission of information along a superposition of alternative trajectories. The relation among these advantages has been the subject of recent debate, with some authors claiming that the advantages of the superposition of orders could be reproduced, and even surpassed, by other forms of superpositions. To shed light on this debate, we develop a general framework of resource theories of communication. In this framework, the resources are communication devices, and the allowed operations are (a) the placement of communication devices between the communicating parties, and (b) the connection of communication devices with local devices in the parties' laboratories. The allowed operations are required to satisfy the minimal condition that they do not enable communication independently of the devices representing the initial resources. The resource-theoretic analysis reveals that the aforementioned criticisms on the superposition of causal orders were based on an uneven comparison between different types of quantum superpositions, exhibiting different operational features.

quantum communication quantum Shannon theory quantum SWITCH indefinite causal order superposition of channels resource theory of communication resource theories

SCI ; EI

英语

其他

National Natural Science Foundation of China[11675136] ; Hong Kong Research Grant Council[17307719] ; UK Engineering and Physical Sciences Research Council (EPSRC)[EP/R513295/1][EP/L015242/1] ; John Templeton Foundation[60609] ; Quantum Causal Structures[61466]

Physics

Physics, Multidisciplinary

WOS:000553805500001

IOP PUBLISHING LTD

20204409426799

Quantum theory

Telecommunication; Radar, Radio and Television:716 ; Quantum Theory; Quantum Mechanics:931.4

PHYSICS

Web of Science

1.Univ Oxford, Dept Comp Sci, Quantum Grp, Wolfson Bldg,Parks Rd, Oxford, England
2.HKU Oxford Joint Lab Quantum Informat & Computat, Oxford, England
3.Univ Hong Kong, Hong Kong, Peoples R China
4.Univ Oxford, Oxford, England
5.Univ Hong Kong, Dept Comp Sci, QICI Quantum Informat & Computat Initiat, Pok Fu Lam Rd, Hong Kong, Peoples R China
6.Perimeter Inst Theoret Phys, 31 Caroline St North, Waterloo, ON, Canada
7.HKU Shenzhen Inst Res & Innovat, Kejizhong 2nd Rd, Shenzhen, Peoples R China
8.Peng Cheng Lab, Ctr Quantum Comp, 2,Xingke 1st St, Shenzhen, Peoples R China
9.Southern Univ Sci & Technol SUSTech, Dept Phys, Inst Quantum Sci & Engn, Shenzhen, Peoples R China
10.Univ Oxford, Wolfson Coll, Linton Rd, Oxford, England

Kristjansson, Hler,Chiribella, Giulio,Salek, Sina,et al. Resource theories of communication[J]. NEW JOURNAL OF PHYSICS,2020,22(7).

Kristjansson, Hler,Chiribella, Giulio,Salek, Sina,Ebler, Daniel,&Wilson, Matthew.(2020).Resource theories of communication.NEW JOURNAL OF PHYSICS,22(7).

Kristjansson, Hler,et al."Resource theories of communication".NEW JOURNAL OF PHYSICS 22.7(2020).