All-Fiber Quantum Logic Using A Single Photon

A team of physicists and engineers have demonstrated all-fibre quantum logic, where single photons are generated and used to perform the contolled-NOT quantum logic gate in optical fibers with high fidelity. The only quantum technology in practical use today is quantum cryptography and is currently limited in the distance over which secure communication may occur. More sophisticated quantum networks will require multiple nodes with the ability to implement small-scale quantum processing in order to increase the range of quantum communications. Such networks will rely on optical fibre links, making fibre-based photon generation and information processing of key technological importance. read more

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