38 citations · 112 across the 4 of their papers we have counts for
6 papers
Millimeter-long Fiber Fabry-Perot cavities
Konstantin Ott, Sebastien Garcia, Ralf Kohlhaas +4
We demonstrate fiber Fabry-Perot (FFP) cavities with concave mirrors that can be operated at cavity lengths as large as 1.5mm without significant deterioration of the finesse. This…
Quantum Information splitting using a pair of GHZ states
Kaushik Nandi, Goutam Paul
We describe a protocol for quantum information splitting (QIS) of a restricted class of three-qubit states among three parties Alice, Bob and Charlie, using a pair of GHZ states as…
Feedback control of coherent spin states using weak nondestructive measurements
Thomas Vanderbruggen, Ralf Kohlhaas, Andrea Bertoldi +3
We consider the decoherence of a pseudo-spin ensemble under collective random rotations, and study, both theoretically and experimentally, how a nondestructive measurement combined…
Feedback control of trapped coherent atomic ensembles
T. Vanderbruggen, R. Kohlhaas, A. Bertoldi +4
We demonstrate how to use feedback to control the internal states of trapped coherent ensembles of two-level atoms, and to protect a superposition state against the decoherence ind…
Robust laser frequency stabilization by serrodyne modulation
Ralf Kohlhaas, Thomas Vanderbruggen, Simon Bernon +3
We report the relative frequency stabilization of a distributed feedback erbium-doped fiber laser on an optical cavity by serrodyne frequency shifting. A correction bandwidth of 2.…
Heterodyne non-demolition measurements on cold atomic samples: towards the preparation of non-classical states for atom interferometry
Simon Bernon, Thomas Vanderbruggen, Ralf Kohlhaas +3
We report on a novel experiment to generate non-classical atomic states via quantum non-demolition (QND) measurements on cold atomic samples prepared in a high finesse ring cavity.…