0000000000621220

AUTHOR

Nerses Ananikian

showing 3 related works from this author

Generation of entanglement in systems of intercoupled qubits

2014

We consider systems of two and three qubits, mutually coupled by Heisenberg-type exchange interaction and interacting with external laser fields. We show that these systems allow one to create maximally entangled Bell states, as well as three qubit Greenberger-Horne-Zeilinger and W states. In particular, we point out that some of the target states are the eigenstates of the initial bare system. Due to this, one can create entangled states by means of pulse area and adiabatic techniques, when starting from a separable (non-entangled) ground state. On the other hand, for target states, not present initially in the eigensystem of the model, we apply the robust stimulated Raman adiabatic passag…

PhysicsQuantum PhysicsBell stateStimulated Raman adiabatic passageFOS: Physical sciencesQuantum PhysicsQuantum entanglement01 natural sciencesAtomic and Molecular Physics and Optics010305 fluids & plasmasPulse (physics)Separable spaceQuantum mechanicsQubit0103 physical sciencesW stateQuantum Physics (quant-ph)010306 general physicsAdiabatic processPhysical Review A
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Thermal entanglement of a spin-1/2 Ising–Heisenberg model on a symmetrical diamond chain

2011

International audience; The entanglement quantum properties of a spin-1/2 Ising-Heisenberg model on a symmetrical diamond chain were analyzed. Due to the separable nature of the Ising-type exchange interactions between neighboring Heisenberg dimers, calculation of the entanglement can be performed exactly for each individual dimer. Pairwise thermal entanglement was studied in terms of the isotropic Ising-Heisenberg model and analytical expressions for the concurrence (as a measure of bipartite entanglement) were obtained. The effects of external magnetic field H and next-nearest neighbor interaction J(m) between nodal Ising sites were considered. The ground state structure and entanglement …

CRYPTOGRAPHYFOS: Physical sciences02 engineering and technologyQuantum entanglement01 natural sciencesCondensed Matter - Strongly Correlated ElectronsMAGNETIC-PROPERTIESSYSTEMSQuantum mechanics0103 physical sciencesGeneral Materials ScienceFIELD010306 general physicsSpin (physics)QuantumANTIFERROMAGNETSPhysicsCoupling constantCOMPOUND CU-3(CO3)(2)(OH)(2)Strongly Correlated Electrons (cond-mat.str-el)Heisenberg modelQUANTUM ENTANGLEMENTConcurrenceQuantum Physics021001 nanoscience & nanotechnologyCondensed Matter PhysicsCondensed Matter - Other Condensed MatterSTATESFRUSTRATIONIsing model0210 nano-technologyGround stateOther Condensed Matter (cond-mat.other)Journal of Physics: Condensed Matter
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Superstable cycles for antiferromagnetic Q-state Potts and three-site interaction Ising models on recursive lattices

2013

We consider the superstable cycles of the Q-state Potts (QSP) and the three-site interaction antiferromagnetic Ising (TSAI) models on recursive lattices. The rational mappings describing the models' statistical properties are obtained via the recurrence relation technique. We provide analytical solutions for the superstable cycles of the second order for both models. A particular attention is devoted to the period three window. Here we present an exact result for the third order superstable orbit for the QSP and a numerical solution for the TSAI model. Additionally, we point out a non-trivial connection between bifurcations and superstability: in some regions of parameters a superstable cyc…

Pure mathematicsSymbolic dynamicsPeriod three window; QSP model; Superstability; Symbolic dynamics; TSAI modelFOS: Physical sciencesSuperstabilityQSP modelOrder (group theory)Condensed Matter - Statistical MechanicsBifurcationTSAI modelMathematicsNumerical AnalysisRecurrence relationStatistical Mechanics (cond-mat.stat-mech)Applied MathematicsMathematical analysisSymbolic dynamicsState (functional analysis)Nonlinear Sciences - Chaotic DynamicsConnection (mathematics)Mathematics::LogicModeling and SimulationIsing modelPeriod three windowChaotic Dynamics (nlin.CD)Orbit (control theory)
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