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- Centre National de la Recherche ScientifiqueFR48 papers
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13 papers · 1 filter
Phase-locked indistinguishable photons with synthesized waveforms from a solid-state source
Clemens Matthiesen, Martin Geller, Carsten H. H. Schulte +6
Resonance fluorescence in the Heitler regime provides access to single photons with coherence well beyond the Fourier transform limit of the transition, and holds the promise to ci…
Quantum imaging of spin states in optical lattices
James Douglas, Keith Burnett
We investigate imaging of the spatial spin distribution of atoms in optical lattices using non-resonant light scattering. We demonstrate how scattering spatially correlated light f…
Quantum key distribution system in standard telecommunications fiber using a short wavelength single-photon source
R. J. Collins, P. J. Clarke, V. Fernandez +8
A demonstration of the principles of quantum key distribution is performed using a single-photon source in a proof of concept test-bed over a distance of 2 km in standard telecommu…
General optimality of the Heisenberg limit for quantum metrology
Marcin Zwierz, Carlos A. Perez-Delgado, Pieter Kok
Quantum metrology promises improved sensitivity in parameter estimation over classical procedures. However, there is an extensive debate over the question how the sensitivity scale…
Geometric derivation of the quantum speed limit
Philip J. Jones, Pieter Kok
The Mandelstam-Tamm and Margolus-Levitin inequalities play an important role in the study of quantum mechanical processes in Nature, since they provide general limits on the speed…
High-efficiency cluster-state generation with atomic ensembles via the dipole-blockade mechanism
Marcin Zwierz, Pieter Kok
We demonstrate theoretically a scheme for cluster state generation, based on atomic ensembles and the dipole blockade mechanism. In the protocol, atomic ensembles serve as single q…