Patent ID: 7135700

Claim:
A method of binary signaling including: providing an ensemble of quantum-systems, wherein the quantum-systems are in pairs, with one quantum-system of each pair being in quantum entanglement with the other quantum system of each pair; separating the paired quantum-systems into two subgroups, with the quantum-systems of each pair being in different subgroups; selecting the binary signal to be transmitted; subjecting the quantum-systems in one subgroup to an influence to enhance scattering of the quantum-systems to an extent corresponding to the binary signal to be transmitted; and detecting the extent of correlated scattering in the quantum-systems in the other subgroup, the extent of scattering providing an indication of the particular binary signal transmitted; wherein the influence to which one group of quantum-system pairs is subjected to cause scattering comprises an aperture through which the quantum-systems are passed to establish interference.