Quantum Communication in Optical Networks: an Overview and Selected Recent Results

Author

Sauge, S. ; Swillo, M. ; Albert-Seifried, S. ; Xavier, G.B. ; Waldebäck, J. ; Tengner, M. ; Ljunggren, D. ; Wang, Q. ; Karlsson, A.

Author_Institution

R. Inst. of Technol., Kista

Volume

1

fYear

2007

fDate

1-5 July 2007

Firstpage

30

Lastpage

33

Abstract

We discuss recent work in quantum communication, and in some details present a bright, narrowband, portable, quasi-phase-matched two-crystal source generating polarization-entangled photon pairs at 809 nm and 1555 nm. We also show how the single-photon quantum channel at 1555 nm and a classical synchronization signal gating the single photon detector at the receiving side can be multiplexed in the same optical fiber of length 27 km by means of wavelength division multiplexers (WDM) having 100 GHz (0.8 nm) spacing between channels. This illustrates how single-photon quantum communication applications is compatible with current high-speed optical networks.

Keywords

light sources; optical fibre networks; quantum communication; wavelength division multiplexing; bright source; distance 27 km; high-speed optical networks; narrowband source; optical fiber network; polarization-entangled photon pairs; portable source; quasi-phase-matched source; single photon detector; single-photon quantum channel; single-photon quantum communication; synchronization signal gating; two-crystal source; wavelength 1555 nm; wavelength 809 nm; wavelength division multiplexers; Cryptography; Microelectronics; Narrowband; Optical fiber networks; Optical fiber polarization; Optical fibers; Photonic crystals; Quantum entanglement; WDM networks; Wavelength division multiplexing; quantum communication; quantum cryptography; single-photon detection;

fLanguage

English

Publisher

ieee

Conference_Titel

Transparent Optical Networks, 2007. ICTON '07. 9th International Conference on

Conference_Location

Rome

Print_ISBN

1-4244-1249-8

Electronic_ISBN

1-4244-1249-8

Type

conf

DOI

10.1109/ICTON.2007.4296023

Filename

4296023