Deterministic mediated superdense coding with linear optics (CROSBI ID 227808)
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Pavičić, Mladen
engleski
Deterministic mediated superdense coding with linear optics
We present a scheme of deterministic mediated superdense coding of entangled photon states employing only linear-optics elements. Ideally, we are able to deterministically transfer four messages by manipulating just one of the photons. Two degrees of freedom, polarization and spatial, are used. Anew kind of source of heralded down-converted photon pairs conditioned on detection of another pair with an efficiency of 92% is proposed. Realistic probabilistic experimental verification of the scheme with such a source of preselected pairs is feasible with today’s technology. We obtain the channel capacity of 1.78 bits for a full- fledged implementation.
Quantum information ; Quantum optics ; Quantum communication
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