Confidential Continuous Variable Direct Communication Protocol by Using Fock-Coherent Entangled States

25 Jan 2016  ·  Jahanshahi Soudeh, Alighanbari Soroosh, Bahrampour Alireza, Zandi Mohammad Hossein ·

We propose a scheme for the secure direct communication based on the entangled phase-coherent states, which shows an elevated level of confidentiality. The protocol gives a simultaneous security control for every bit of transferred information... The security-check-per-bit is provided by sending an additional mode to prove the legitimate parties' authenticity. Other benefit include increased transfer rate, since a separate control sequences is unnecessary. We study the security of the scheme for both ideal and realistic quantum channel. The protocol shows a robust security and prepares 50% probability to detect the presence of the eavesdropper. read more

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Quantum Physics