Four-dimensional Quantum Key Distribution using Position-Momentum and Polarization Correlations
classification
🪐 quant-ph
keywords
correlationsdistributionfour-dimensionalpolarizationposition-momentumadequatecreateddemonstrate
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We demonstrate experimentally that it is possible to prepare and detect photon pairs created by spontaneous parametric down-conversion which exhibit simultaneous position-momentum and polarization correlations that are adequate to implement a four-dimensional key distribution protocol.
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