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Quantum key distribution using gaussian-modulated coherent states
F. Grosshans, G. Van Assche, J. Wenger +3
Quantum continuous variables are being explored as an alternative means to implement quantum key distribution, which is usually based on single photon counting. The former approach…
Vacuum-field atom trapping in a wide aperture spherical resonator
Jean-Marc Daul, Philippe Grangier
We consider the situation where a two-level atom is placed in the vicinity of the center of a spherical cavity with a large numerical aperture. The vacuum field at the center of th…
Cavity-induced damping and level shifts in a wide aperture spherical resonator
Jean-Marc Daul, Philippe Grangier
We calculate explicitly the space dependence of the radiative relaxation rates and associated level shifts for a dipole placed in the vicinity of the center of a spherical cavity w…
Virtual Entanglement and Reconciliation Protocols for Quantum Cryptography with Continuous Variables
F. Grosshans, N. J. Cerf, J. Wenger +2
We discuss quantum key distribution protocols using quantum continuous variables. We show that such protocols can be made secure against individual gaussian attacks regardless the…
Contextual objectivity and quantum holism
Philippe Grangier
In our effort to restate a "realistic" approach to quantum mechanics, that would fully acknowledge that local realism is untenable, we add a few more questions and answers to the l…