Asynchronous quantum key distribution on a relay network |
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Authors: | Stephen M Barnett |
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Affiliation: | Department of Physics , University of Strathclyde , Glasgow , G4 0NG , UK |
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Abstract: | We show how quantum key distribution on a multi-user, multi-path, network can be used to establish a key between any two end-users in an asynchronous fashion using the technique of bit-transport. By a suitable adaptation of our previous secret-sharing scheme we show that an attacker has to compromise all of the intermediate relays on the network in order to obtain the key. Thus, two end-users can establish a secret key provided they trust at least one of the network relays. |
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Keywords: | quantum key distribution secret sharing optical networks |
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