Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Quantum Cryptography with Optical Entanglement at 1.5 µm

Not Accessible

Your library or personal account may give you access

Abstract

We report on the engineering, preparation, and utilization of polarization entangled-photon states in the telecommunications window of 1.5 µm for secure quantum key distribution. Traditionally, such sources have been based on the use of the process of spontaneous parametric down conversion (SPDC) when nonlinear crystal is pumped by a continuous wave (cw) or a pulsed laser. The pump photon disintegrates spontaneously giving birth to two twin photons that are strongly correlated in frequency, polarization and wave vector (direction of propagation). Photon entanglement results from the fact that the possible values of correlated parameters of twin photons are made indistinguishable from each other either at the generation or at the single-photon detection stage. This leads to non-classical interference effects.

© 2006 Optical Society of America

PDF Article
More Like This
Engineering Robust Optical Entanglement for Quantum Communication

Alexander V. Sergienko, Martin Jaspan, Olga Minaeva, Bahaa E. A. Saleh, and Malvin C. Teich
IFC1 International Conference on Quantum Information (QIM) 2007

Quantum cryptography with polarized entangled photons

Alexander Sergienko, Alan Migdall, and Raju Datla
QME1 Quantum Electronics and Laser Science Conference (CLEO:FS) 1997

Engineering entangled-photon states using two-dimensional PPLN crystals

Hugues Guillet de Chatellus, Giovanni Di Giuseppe, Alexander V. Sergienko, Bahaa E. A. Saleh, and Malvin C. Teich
CMF3 Conference on Lasers and Electro-Optics (CLEO:S&I) 2004

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved