Field test of the wavelength-saving quantum key distribution network

Abstract

We propose a wavelength-saving topology of quantum key distribution(QKD) network based on passive optical elements, and report the field test of this network on the commercial telecom optical fiber. In this network, 5 nodes are supported with 2 wavelengths, and every two nodes can share secure keys directly at the same time. All QKD links in the network operate at the frequency of 20 MHz. We also characterized the insertion loss and crosstalk effects on the point-to-point QKD system after introducing this QKD network.

References in corpus (2)

• Outline of the SECOQC Quantum-Key-Distribution Network in Vienna
• Field test of a practical secure communication network with decoy-state quantum cryptography

Cited by in corpus (6)

• Secure Quantum Key Distribution
• Long term performance of the SwissQuantum quantum key distribution network in a field environment
• Field and long-term demonstration of a wide area quantum key distribution network
• Proof-of-principle experiment of reference-frame-independent quantum key distribution with phase coding
• Safeguarding Quantum Key Distribution through Detection Randomization
• Countermeasure against blinding attacks on low-noise detectors with background noise cancellation scheme