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- Mohammed V UniversityMA32 papers
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5 papers · 2 filters
Quantum discord for multipartite coherent states interpolating between Werner and Greenberger-Horne-Zeilinger states
M. Daoud, R. Ahl Laamara
The quantum discord is used as measure of quantum correlations for two families of multipartite coherent states. The first family interpolates between generalized GHZ states and ge…
Geometric Measure of Pairwise Quantum Discord for Superpositions of Multipartite Generalized Coherent States
M. Daoud, R. Ahl Laamara
We give the explicit expressions of the pairwise quantum correlations present in superpositions of multipartite coherent states. A special attention is devoted to the evaluation of…
Quantum discord of Bell cat-states under amplitude damping
M. Daoud, R. Ahl Laamara
The evolution of pairwise quantum correlations of Bell cat-states under amplitude damping is examined using the concept of quantum discord which goes beyond entanglement. A closed…
Entangled Phase States via Quantum Beam Splitter
M. Daoud, E. B. Choubabi
We study the entanglement effect of beam splitter on the temporally stable phase states. Specifically, we consider the eigenstates (phase states) of an unitary phase operator resul…
Three dimensional quantum key distribution in the presence of several eavesdroppers
M. Daoud, H. Ez-zahraouy
Quantum key distribution based on encoding in three dimensional systems in the presence of several eavesdroppers is proposed. This extends the BB84 protocol in the presence of many…