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4 papers · 2 filters
Secure Coherent-state Quantum Key Distribution Protocols with Efficient Reconciliation
G. Van Assche, S. Iblisdir, N. J. Cerf
We study the equivalence between a realistic quantum key distribution protocol using coherent states and homodyne detection and a formal entanglement purification protocol. Maximal…
Superluminal hidden communication as the underlying mechanism for quantum correlations: constraining models
Valerio Scarani, Nicolas Gisin
Since Bell's theorem, it is known that quantum correlations cannot be described by local variables (LV) alone: if one does not want to abandon classical mechanisms for correlations…
High quality asynchronous heralded single photon source at telecom wavelength
Sylvain Fasel, Olivier Alibart, Alexios Beveratos +4
We report on the experimental realization and characterization of an asynchronous heralded single photon source based on spontaneous parametric down conversion. Photons at 1550nm a…
Quantum key distribution over 30km of standard fiber using energy-time entangled photon pairs: a comparison of two chromatic dispersion reduction methods
Sylvain Fasel, Nicolas Gisin, Grégoire Ribordy +1
We present a full implementation of a quantum key distribution system using energy-time entangled photon pairs and functioning with a 30km standard telecom fiber quantum channel. T…