16 citations · 30 across the 5 of their papers we have counts for
6 papers
Feshbach projection-operator formalism to resonance scattering on Bargmann-type potentials
Varvara V. Shamshutdinova, Konstantin N. Pichugin, Ingrid Rotter +1
The projection-operator formalism of Feshbach is applied to resonance scattering in a single-channel case. The method is based on the division of the full function space into two s…
Towards Dynamical Qubit Controlling with Time-Dependent External Fields
Boris F. Samsonov, V. V. Shamshutdinova
For a flux qubit described by a two-level system of equations we propose a special time dependent external control field. We show that for a qubit placed in this field there exists…
Dynamics of Josephson-junction qubits with exactly solvable time-dependent bias pulses
V. V. Shamshutdinova, A. S. Kiyko, S. N. Shevchenko +2
The quantum dynamics of a two-state system (qubit) can be governed by means of external control parameters present in time-dependent bias pulses of special forms. We consider the c…
Two-level systems: exact solutions and underlying pseudo-supersymmetry
V. V. Shamshutdinova, Boris F. Samsonov, D. M. Gitman
Chains of first-order SUSY transformations for the spin equation are studied in detail. It is shown that the transformation chains are related with a olynomial pseudo-supersymmetry…
Quadratic pseudosupersymmetry in two-level systems
Boris F Samsonov, V V Shamshutdinova
Using the intertwining relation we construct a pseudosuperpartner for a (non-Hermitian) Dirac-like Hamiltonian describing a two-level system interacting in the rotating wave approx…
Darboux transformation for two-level systems
V. G. Bagrov, M. C. Baldiotti, D. M. Gitman +1
We develop the Darboux procedure for the case of the two-level system. In particular, it is demonstrated that one can construct the Darboux intertwining operator that does not viol…