Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Akhtarshenas, S. Javad"'
In this paper, the dynamical behaviour of the geometric discord of a system consisting of a two-level atom interacting with a quantised radiation field described by the Jaynes-Cummings model has been studied. The evolution of the system has been cons
Externí odkaz:
http://arxiv.org/abs/1403.2959
Publikováno v:
Int J Theor Phys 54, 72-84 (2015)
Calculation of the quantum discord requires to find the minimum of the quantum conditional entropy $S(\rho^{AB}|\{\Pi^B_{k}\})$ over all measurements on the subsystem $B$. In this paper, we provide a simple relation for the conditional entropy as the
Externí odkaz:
http://arxiv.org/abs/1304.3914
Publikováno v:
Quantum Inf Process 14, 247-267 (2015)
A general state of an $m\otimes n$ system is a classical-quantum state if and only if its associated $A$-correlation matrix (a matrix constructed from the coherence vector of the party $A$, the correlation matrix of the state, and a function of the l
Externí odkaz:
http://arxiv.org/abs/1303.5570
The entanglement dynamics of an anisotropic two-qubit Heisenberg XYZ system in the presence of intrinsic decoherence is studied. The usefulness of such system for performance of the quantum teleportation protocol ${\cal T}_0$ and entanglement telepor
Externí odkaz:
http://arxiv.org/abs/1003.2761
The effects of initial conditions and system parameters on entanglement dynamics and asymptotic entanglement for a two-qubit anisotropic XY Heisenberg system in the presence of an inhomogeneous magnetic field and spin-orbit interaction are investigat
Externí odkaz:
http://arxiv.org/abs/0906.2534
Publikováno v:
Phys. Rev. A 042309 (2008)
The role of spin-orbit interaction on the ground state and thermal entanglement of a Heisenberg XYZ two-qubit system in the presence of an inhomogeneous magnetic field is investigated. For a certain value of spin-orbit parameter $D$, the ground state
Externí odkaz:
http://arxiv.org/abs/0801.1897
Autor:
Akhtarshenas, S. Javad
Publikováno v:
J. Math. Phys., Vol. 48, 012102 (2007)
An explicit parameterization for the state space of an $n$-level density matrix is given. The parameterization is based on the canonical coset decomposition of unitary matrices. We also compute, explicitly, the Bures metric tensor over the state spac
Externí odkaz:
http://arxiv.org/abs/quant-ph/0604063
Autor:
Akhtarshenas, S. Javad
Publikováno v:
International Journal of Theoretical Physics, Vol. 45, No. 5, (2006) 1005-1015
We will study entangled two-photon states generated from a two-mode supersymmetric model and quantify degree of entanglement in terms of the entropy of entanglement. The influences of the nonlinearity on the degree of entanglement is also examined, a
Externí odkaz:
http://arxiv.org/abs/quant-ph/0507079
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Akademický článek
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