Quantum Key Distribution with Qubit Pairs

Mohd Asad Siddiqui, Tabish Qureshi

Centre for Theoretical Physics, Jamia Millia Islamia, New Delhi, India.

DOI: 10.4236/jqis.2014.43014                

Abstract

We propose a new Quantum Key Distribution method in which Alice sends pairs of qubits to Bob; each is in one of four possible states. Bob uses one qubit to generate a secure key and the other to generate an auxiliary key. For each pair he randomly decides which qubit to use for which key. The auxiliary key has to be added to Bob’s secure key in order to match Alice’s secure key. This scheme provides an additional layer of security over the standard BB84 protocol.

Keywords

Quantum Key Distribution, Quantum Cryptography

Conflicts of Interest

The authors declare no conflicts of interest.

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