Entanglement purification for quantum communication

Article Abstract:

Future quantum communication projects will depend on the distribution of entangled states between distant locations. A model is presented for the entanglement purification of general mixed entangled states. The model is not based on the quantum controlled-NOT operation.

Models, Letter to the Editor

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Experimental entanglement purification of arbitrary unknown states

Article Abstract:

Research shows that in the long-distance quantum communication, entanglement purification for general mixed states of polarization-entangled photons, one photon pair of 92% fidelity is obtained from two pairs, with each pair exhibiting a fidelity of 75% in the absence of decoherence.

Austria, Analysis, Influence, Communication, Communications, Polarization (Light), Coherent states

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An experimental test of non-local realism

Article Abstract:

Theory and experiments are used to show that a broad and reasonable class of non-local realistic theories is incompatible with quantum correlations. Results indicated that giving up the concept of locality is not enough to be consistent with quantum experiments, unless some intuitive features of realism are abandoned.

Photonics

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