Secure communication with choice of measurement
Department of Modern Physics, University of Science
and Technology of China, Hefei, Anhui
Received in final form: 15 May 2014
Published online: 1 October 2014
It has been previously found that a signal can be encoded in the choice of the measurement basis of one of the communicating parties, while the outcomes of the measurement are irrelevant for the communication and therefore may be discarded. The proposed protocol was novel and interesting, but it was not secure for communication. An eavesdropper can obtain the information without being detected. We utilize the outcomes of measurement and separate the Hilbert space to propose a secure communication protocol. An error correction code is used to increase the fault tolerance of the signal transmission against noise.
Key words: Quantum Information
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2014