Quantum Photonic Network: Concept, Basic Tools, and Future Issues

Author

Sasaki, Masahide ; Fujiwara, Mikio ; Rui-Bo Jin ; Takeoka, Masahiro ; Te Sun Han ; Endo, Hiroyuki ; Yoshino, Ken-Ichiro ; Ochi, Takao ; Asami, Shione ; Tajima, Akio

Author_Institution

Quantum ICT Lab., Nat. Inst. of Inf. & Commun. Technol., Koganei, Japan

Volume

21

Issue

3

fYear

2015

fDate

May-June 2015

Firstpage

49

Lastpage

61

Abstract

We present practical GHz-clocked QKD systems, next generation entanglement QKD technologies, and QKD platform to manage the secure keys and to support a variety of applications. We then show the intrinsic limit of QKD, i.e., a key rate bound, and discuss how to realize the provable (information theoretic) security with a larger secrecy capacity over longer distances. In particular, we present a basic theory of physical layer cryptography, which characterizes the secrecy capacity, and engineers the tradeoff between the efficiency of reliable transmission and secrecy of communication. We introduce a concept to unify these schemes in photonic network, referred to as quantum photonic network. Future issues for realizing this new network paradigm are discussed.

Keywords

optical communication; quantum cryptography; quantum entanglement; quantum optics; GHz-clocked QKD systems; basic theory; communication secrecy; intrinsic limit; key rate bound; network paradigm; next generation entanglement QKD technologies; physical layer cryptography; provable security; quantum photonic network; reliable transmission efficiency; secrecy capacity; secure keys; tradeoff; Cryptography; Detectors; Optical fiber networks; Photonics; Wavelength division multiplexing; Quantum communication; photonic network; quantum cryptography; quantum key distribution;

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/JSTQE.2014.2369507

Filename

6954419