816 citations
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- Centre National de la Recherche ScientifiqueFR46 papers
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20 papers · 1 filter
Pseudo-classical theory for fidelity of nearly resonant quantum rotors
Martina Abb, Italo Guarneri, Sandro Wimberger
Using a semiclassical ansatz we analytically predict for the fidelity of delta-kicked rotors the occurrence of revivals and the disappearance of intermediate revival peaks arising…
An integrated atom detector: single atoms and photon statistics
Dennis Heine, Marco Wilzbach, Thomas Raub +2
We demonstrate a robust fiber-optics-based fluorescence detector, fully integrated on an atom chip, which detects single atoms propagating in a guide with 66% efficiency. We charac…
Dissipation induced coherence and stochastic resonance of an open two-mode Bose-Einstein condensate
D. Witthaut, F. Trimborn, S. Wimberger
We discuss the dynamics of a Bose-Einstein condensate in a double-well trap subject to phase noise and particle loss. The phase coherence of a weakly-interacting condensate, experi…
Many-body theory for systems with particle conversion: Extending the multiconfigurational time-dependent Hartree method
Ofir E. Alon, Alexej I. Streltsov, Lorenz S. Cederbaum
We derive a multiconfigurational time-dependent Hartree theory for systems with particle conversion. In such systems particles of one kind can convert to another kind and the total…
Scaling law and stability for a noisy quantum system
Mark Sadgrove, Sandro Wimberger, Scott Parkins +1
We show that a scaling law exists for the near resonant dynamics of cold kicked atoms in the presence of a randomly fluctuating pulse amplitude. Analysis of a quasi-classical phase…
Multistage Entanglement Swapping
Alexander M. Goebel, Claudia Wagenknecht, Qiang Zhang +4
We report an experimental demonstration of entanglement swapping over two quantum stages. By successful realizations of two cascaded photonic entanglement swapping processes, entan…