Deterministic Secure Communications using Two-Mode Squeezed States

Abstract

We propose a scheme for quantum cryptography that uses the squeezing phase of a two-mode squeezed state to transmit information securely between two parties. The basic principle behind this scheme is the fact that each mode of the squeezed field by itself does not contain any information regarding the squeezing phase. The squeezing phase can only be obtained through a joint measurement of the two modes. This, combined with the fact that it is possible to perform remote squeezing measurements, makes it possible to implement a secure quantum communication scheme in which a deterministic signal can be transmitted directly between two parties while the encryption is done automatically by the quantum correlations present in the two-mode squeezed state.

10 pages, 4 figures

References in corpus (2)

• Experimental characterization of frequency dependent squeezed light
• Quantum Noise Locking

Cited by in corpus (8)

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• Generation of ${}^{87}$Rb-resonant bright two-mode squeezed light with four-wave mixing
• Continuous variable controlled quantum dialogue and secure multiparty quantum computation
• Suppression of the four-wave mixing amplification via Raman absorption
• Creation of pure multi-mode entangled states in a ring cavity