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20 papers · 2 filters
Quantum reflection and Liouville transformations from wells to walls
Gabriel Dufour, Romain Guérout, Astrid Lambrecht +1
Liouville transformations map in a rigorous manner one Schrödinger equation into another, with a changed scattering potential. They are used here to transform quantum reflection of…
Fluctuations of the Casimir potential above a disordered medium
Nicolas Cherroret, Romain Guérout, Astrid Lambrecht +1
We study the statistical fluctuations of the Casimir potential felt by an atom approaching a dielectric disordered medium. Starting from a microscopic model for the disorder, we ca…
Casimir-Polder induced Rabi oscillations
M. Donaire, M. -P. Gorza, A. Maury +2
We show that the Casimir-Polder interaction may induce coherent oscillations between degenerate atomic states. We illustrate this effect by computing the Casimir-Polder induced Rab…
Quantum networks generation based on four-wave mixing
Yin Cai, Jingliang Feng, Hailong Wang +4
We present a scheme to realize versatile quantum networks by cascading several four-wave mixing (FWM) processes in warm rubidium vapors. FWM is an efficient nonlinear pro…
Geometric origin of negative Casimir entropies: A scattering-channel analysis
Gert-Ludwig Ingold, Stefan Umrath, Michael Hartmann +4
Negative values of the Casimir entropy occur quite frequently at low temperatures in arrangements of metallic objects. The physical reason lies either in the dissipative nature of…
Atomic quantum memory for multimode frequency combs
Z. Zheng, O. Mishina, N. Treps +1
We propose a Raman quantum memory scheme that uses several atomic ensembles to store and retrieve the multimode highly entangled state of an optical quantum frequency comb, such as…