DOUBLE ENTANGLEMENT AND QUANTUM CRYPTOGRAPHY
Genovèse, M, Carlo Novero · CERN Document Server (European Organization for Nuclear Research) · 2001
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.