31 citations · 151 across the 15 of their papers we have counts for
15 papers
Asymptotic entanglement sudden death in two atoms with dipole-dipole and Ising interactions coupled to a radiation field at non-zero detuning
Gehad Sadiek, Wiam Al-Drees, Salwa Shaglel +1
We investigate the time evolution and asymptotic behavior of a system of two two-level atoms (qubits) interacting off-resonance with a single mode radiation field. The two atoms ar…
Entanglement robustness and spin relaxation in thermal states of two-dimensional dissipative spin system in an inhomogeneous magnetic field
Gehad Sadiek, Samaher Almalki
We consider a finite two-dimensional Heisenberg triangular spin lattice at different degrees of anisotropy coupled to a dissipative Lindblad environment obeying the Born-Markovian…
Manipulating entanglement sudden death in two coupled two-level atoms interacting off-resonance with a radiation field: an exact treatment
Gehad Sadiek, Wiam Al-Drees, M. Sebaweh Abdallah
We study a model of two coupled two-level atoms (qubits) interacting off-resonance (at non-zero detuning) with a single mode radiation field. This system is of special interest in…
Manipulation of two quantum systems through their mutual interaction in presence of a radiation field
Gehad Sadiek, Wiam AlDrees, M. Sebaweh Abdallah
In cavity QED, the mutual interaction between natural atomic systems in presence of a radiation field was ignored due to its negligible impact compared with the coupling to the fie…
Entanglement robustness in Heisenberg spin chains coupled to dissipative environment at finite temperature
Gehad Sadiek, Samaher Almalki
We consider a finite one-dimensional Heisenberg XYZ spin chain under the influence of dissipative Lindblad environment obeying the Born-Markovian constrain in presence of an extern…
Two driven coupled qubits in a time varying magnetic field: exact and approximate solutions
E. I. Lashin, Gehad Sadiek, M. Sebaweh Abdullah +1
We study the dynamics of a two-qubit system coupled through time dependent anisotropic Heisenberg interaction in presence of a time varying non-uniform external magnetic fiel…
Dynamics of Entanglement in one and two-dimensional spin systems
Gehad Sadiek, Qing Xu, Sabre Kais
We present a review of dynamics of entanglement in one and two dimensional systems under the effect of external magnetic field and different degrees of anisotropy at zero and finit…
Persistence of entanglement in thermal states of spin systems
Gehad Sadiek, Sabre Kais
We study and compare the persistence of bipartite entanglement (BE) and multipartite entanglement (ME) in one-dimensional and two-dimensional spin XY models in an external transver…
Tuning entanglement and ergodicity in two-dimensional spin systems using impurities and anisotropy
Gehad Sadiek, Qing Xu, Sabre Kais
We consider the entanglement in a two dimensional XY model in an external magnetic field h. The model consists of a set of 7 localized spin-1/2 particles in a two dimensional trian…
Entanglement dynamics of one-dimensional driven spin systems in time-varying magnetic fields
Bedoor Alkurtass, Gehad Sadiek, Sabre Kais
We study the dynamics of entanglement for a one-dimensional spin chain with a nearest neighbor time dependent Heisenberg coupling J(t) between the spins in presence of a time depen…
Dynamics of entanglement in a two-dimensional spin system
Qing Xu, Gehad Sadiek, Sabre Kais
We consider the time evolution of entanglement in a finite two dimensional transverse Ising model. The model consists of a set of 7 localized spin-1/2 particles in a two dimensiona…
Entanglement in a Time-Dependent Coupled XY Spin Chain in an External Magnetic Field
Gehad Sadiek, Bedoor Alkurtass, Omar Aldossary
We consider an infinite one dimensional anisotropic XY spin chain with a nearest neighbor time-dependent Heisenberg coupling J(t) between the spins in presence of a time-dependent…
Nuclear-induced time evolution of entanglement of two-electron spins in anisotropically coupled quantum dot
Gehad Sadiek, Zhen Huang, Omar Aldossary +1
We study the time evolution of entanglement of two spins in anisotropically coupled quantum dot interacting with the unpolarized nuclear spins environment. We assume that the excha…
Decoherence by a nonlinear environment: canonical vs. microcanonical case
S. Khlebnikov, G. Sadiek
We compare decoherence induced in a simple quantum system (qubit) for two different initial states of the environment: canonical (fixed temperature) and microcanonical (fixed energ…
Controlled transfer of quantum amplitude via modulation of a potential barrier: numerical study in a model of SQUID
M. Crogan, S. Khlebnikov, G. Sadiek
We numerically integrate the time-dependent Schrodinger equation in a single-degree-of-freedom model of SQUID with a variable potential barrier between the basis flux states. We fi…