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19 papers · 2 filters
Quantum discord in photon added Glauber coherent states of -type
M. Daoud, W. Kaydi, H. El Hadfi
We investigate the influence of photon excitations on quantum correlations in tripartite Glauber coherent states of Greenberger-Horne-Zeilinger type. The pairwise correlations are…
Mixed Semiclassical Initial Value Representation Time-Averaging Propagator for Spectroscopic Calculations
Max Buchholz, Frank Grossmann, Michele Ceotto
A mixed semiclassical initial value representation expression for spectroscopic calculations is derived. The formulation takes advantage of the time-averaging filtering and the hie…
Quantum correlations beyond entanglement in a double-cavity opto-mechanical system
J. El Qars, M. Daoud, Ahl Laamara
In this paper we investigate the robustness of the quantum correlations against the environment effects in various opto-mechanical bipartite systems. For two spatially separated op…
Hilbert-Schmidt measure of pairwise quantum discord for three-qubit states
M. Daoud, R. Ahl Laamara, S. Seddik
The Hilbert-Schmidt distance between a mixed three-qubit state and its closest state is used to quantify the amount of pairwise quantum correlations in a tripartite system. Analyti…
A recursive approach for geometric quantifiers of quantum correlations in multiqubit Schrödinger cat states
M. Daoud, R. Ahl Laamara, S. Seddik
A recursive approach to determine the Hilbert-Schmidt measure of pairwise quantum discord in a special class of symmetric states of qubits is presented. We especially focus on…
Coupling of a nano mechanical oscillator and an atomic three-level medium
A. Sanz-Mora, A. Eisfeld, S. Wüster +1
We theoretically investigate the coupling of an ultracold three-level atomic gas and a nano-mechanical mirror via classical electromagnetic radiation. The radiation pressure on the…