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10 papers · 2 filters
High-fidelity quantum driving
Mark G. Bason, Matthieu Viteau, Nicola Malossi +7
The ability to accurately control a quantum system is a fundamental requirement in many areas of modern science such as quantum information processing and the coherent manipulation…
Rephasing processes and quantum memory for light: reversibility issues and how to fix them
Sergey A. Moiseev, J. -L. Le Gouët
Time reversibility is absent from some recently proposed quantum memory protocols such as Absorption Frequency Comb (AFC). Focusing on AFC memory, we show that quantum efficiency a…
Anomalous ring-down effects and breakdown of the decay rate concept in optical cavities with negative group delay
T. Lauprêtre, S. Schwartz, R. Ghosh +3
Propagation of light pulses through negative group velocity media is known to give rise to a number of paradoxical situations that seem to violate causality. The solution of these…
Revival of Silenced Echo and Quantum Memory for Light
V. Damon, M. Bonarota, A. Louchet-Chauvet +2
We propose an original quantum memory protocol. It belongs to the class of rephasing processes and is closely related to two-pulse photon echo. It is known that the strong populati…
Interacting double dark resonances in a hot atomic vapor of helium
S. Kumar, T. Lauprêtre, R. Ghosh +2
We experimentally and theoretically study two different tripod configurations using metastable helium (He*), with the probe field polarization perpendicular and parallel to the…
Clusters of Exceptional Points for a Laser Control of Selective Vibrational Transfer
Roland Lefebvre, Amine Jaouadi, Osman Atabek
When a molecule is exposed to a laser field, all field-free vibrational states become resonances, with complex quasi energies calculated using Floquet theory. There are many ways t…