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Double entanglement and quantum cryptography

M. Genovese·C. Novero
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Abstract

We propose a quantum transmission based on bi-photons which are doubly-entangled both in polarisation and phase. This scheme finds a natural application in quantum cryptography, where we show that an eventual eavesdropper is bound to introduce a larger error on the quantum communication than for a single entangled bi-photon communication, when steeling the same information.

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M. Genovese, C. Novero. 2001-07-23. Double entanglement and quantum cryptography. https://doi.org/10.1140/epjd%2Fe2002-00172-5

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