Quantum Communication Experiments Using Telecom-Band Entangled Photons

Hiroki TAKESUE  Toshimori HONJO  Kenichi HARADA  Benjamin MIQUEL  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E93-A   No.5   pp.903-909
Publication Date: 2010/05/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E93.A.903
Print ISSN: 0916-8508
Type of Manuscript: INVITED PAPER (Special Section on Leading-Edge Developments in Quantum Cryptographic Systems)
entanglement,  quantum communication,  quantum key distribution,  entanglement swapping,  

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Entanglement is expected to play a crucial role in the next-generation quantum communication systems. This paper reviews recent quantum communication experiments over optical fiber using 1.5-µm telecom-band entangled photon pairs. After describing the telecom-band entanglement sources based on spontaneous parametric processes, we review three quantum communication experiments using entangled photons: a long-distance entanglement distribution, an entanglement-based quantum key distribution, and an entanglement swapping.