Single-photon interference over 150-km transmission using silica-based integrated-optic interferometers for quantum cryptography

Abstract

We have demonstrated single-photon interference over 150 km using time-division interferometers for quantum cryptography, which were composed of two integrated-optic asymmetric Mach-Zehnder interferometers, and balanced gated-mode photon detectors. The observed fringe visibility was more than 80% after 150-km transmission.

10 pages, 2 figures, submitted to Electronics Letters

References in corpus (3)

• ``Plug and play'' systems for quantum cryptography
• A balanced gated-mode photon detector for qubit discrimination in 1550 nm
• BB84 Quantum Key Distribution System based on Silica-Based Planar Lightwave Circuits

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