0610096v2

related topics
{photon, photons, single}
{key, protocol, security}
{qubit, qubits, gate}
{alice, bob, state}
{trap, ion, state}
{time, systems, information}
{spin, pulse, spins}
{time, wave, function}

Quantum key distribution network with wavelength addressing

Xiao-Fan Mo, Tao Zhang, Fang-Xing Xu, Zheng-Fu Han, Guang-Can Guo

abstract: Most traditional applications of quantum cryptography are point-to-point communications, in which only two users can exchange keys. In this letter, we present a network scheme that enable quantum key distribution between multi-user with wavelength addressing. Considering the current state of wavelength division multiplexing technique, dozens or hundreds of users can be connected to such a network and directly exchange keys with each other. With the scheme, a 4-user demonstration network was built up and key exchanges were performed.

oai_identifier:
oai:arXiv.org:quant-ph/0610096
categories:
quant-ph
comments:
11 pages, 3 figures
arxiv_id:
quant-ph/0610096
created:
2006-10-12
updated:
2006-10-14

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