Photon-number-resolved heralded-photon source for improved quantum key distribution

Tomoyuki Horikiri*, Yuishi Takeno, Atsushi Yabushita, Takayoshi Kobayashi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We have suppressed multiphoton probability of a heralded-photon source, which is vital for quantum key distribution with a higher secure key generation rate. It is accomplished by utilizing a practical photon-number-resolving detector for triggering resulting in an important step for improved practical quantum key distribution. Heralded-photon source and a practical photon-number-resolving detector capable of real-time processed multiphoton rejection are stably operable at room temperature and enable us to generate a secure key at a distance as long as an ideal single photon source is used.

Original languageEnglish
Article number012306
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number1
StatePublished - 9 Jul 2007


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