• Quantum key distribution using three basis states

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    • Keywords


      Quantum cryptography; quantum key distribution

    • Abstract


      This note presents a method of public key distribution using quantum communication of n photons that simultaneously provides a high probability that the bits have not been tampered. It is a variant of the quantum method of Bennett and Brassard (BB84) where the transmission states have been decreased from 4 to 3 and the detector states have been increased from 2 to 3. Under certain assumptions regarding method of attack, it provides superior performance (in terms of the number of usable key bits) for n<18m, where m is the number of key bits used to verify the integrity of the process in the BB84-protocol.

    • Author Affiliations


      Subhash Kak1

      1. Department of Electrical and Computer Engineering, Louisiana State University, Baton Rouge, LA - 70803-5901, USA
    • Dates

  • Pramana – Journal of Physics | News

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