Chapter

Information Theoretic Security

Volume 4883 of the series Lecture Notes in Computer Science pp 181-182

Anonymous Quantum Communication

(Extended Abstract)
  • Gilles BrassardAffiliated withDépartement d’informatique et de recherche opérationnelle, Université de Montréal
  • , Anne BroadbentAffiliated withDépartement d’informatique et de recherche opérationnelle, Université de Montréal
  • , Joseph FitzsimonsAffiliated withDepartment of Materials, University of Oxford
  • , Sébastien GambsAffiliated withDépartement d’informatique et de recherche opérationnelle, Université de Montréal
  • , Alain TappAffiliated withDépartement d’informatique et de recherche opérationnelle, Université de Montréal

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Abstract

We introduce the first protocol for the anonymous transmission of a quantum state that is information-theoretically secure against an active adversary, without any assumption on the number of corrupt participants. The anonymity of the sender and receiver is perfectly preserved, and the privacy of the quantum state is protected except with exponentially small probability. Even though a single corrupt participant can cause the protocol to abort, the quantum state can only be destroyed with exponentially small probability: if the protocol succeeds, the state is transferred to the receiver and otherwise it remains in the hands of the sender (provided the receiver is honest).