Quantum photonic network: Concept, basic tools, and future issues

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

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


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.

Original languageEnglish
Article number6954419
Pages (from-to)49-61
Number of pages13
JournalIEEE Journal of Selected Topics in Quantum Electronics
Issue number3
Publication statusPublished - 2015 May 1
Externally publishedYes


  • Quantum communication
  • photonic network
  • quantum cryptography
  • quantum key distribution

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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