900 citations · 4.4k across the 91 of their papers we have counts for
8 papers · 1 filter
Quadratic-nonlinear Landau-Zener transition for association of an atomic Bose-Einstein condensate with inter-particle elastic interactions included
A. Ishkhanyan, R. Sokhoyan, K. -A. Suominen +2
We study the strong coupling limit of a quadratic-nonlinear Landau-Zener problem for coherent photo- and magneto-association of cold atoms taking into account the atom-atom, atom-m…
New solutions of Heun general equation
Artur Ishkhanyan, Kalle-Antti Suominen
We show that in four particular cases the derivative of the solution of Heun general equation can be expressed in terms of a solution to another Heun equation. Starting from this p…
Rosen-Zener model in cold molecule formation
A. Ishkhanyan, R. Sokhoyan, B. Joulakian +1
The Rosen-Zener model for association of atoms in a Bose-Einstein condensate is studied. Using a nonlinear Volterra integral equation, we obtain an analytic formula for final proba…
Two strong nonlinearity regimes in cold molecule formation
A. M. Ishkhanyan, B. Joulakian, K. -A. Suominen
Two distinct strongly non-linear scenarios of molecule formation in an atomic Bose-Einstein condensate (either by photoassociation or Feshbach resonance) corresponding to large and…
Reservoir cross-over in entanglement dynamics
L. Mazzola, S. Maniscalco, K. -A. Suominen +1
We study the effects of spontaneous emission on the entanglement dynamics of two qubits interacting with a common Lorentzian structured reservoir. We assume that the qubits are ini…
Exact dynamics of entanglement and entropy in structured environments
L. Mazzola, S. Maniscalco, J. Piilo +1
We study the exact entanglement dynamics of two qubits interacting with a common zero-temperature non-Markovian reservoir. We consider the two qubits initially prepared in Bell-lik…