6533b7d0fe1ef96bd125ad53

RESEARCH PRODUCT

Degenerate Landau–Zener model in the presence of quantum noise

Benedetto Militello

subject

PhysicsQuantum PhysicsDecoherence-free subspacesPhysics and Astronomy (miscellaneous)Quantum noiseDegenerate energy levelsFOS: Physical sciencesopen quantum systemsdecoherence-free subspace01 natural sciences010305 fluids & plasmasLandau-Zener processeQuantum mechanics0103 physical sciencesStandard linear solid modelQuantum Physics (quant-ph)010306 general physicsEnergy (signal processing)

description

The degenerate Landau–Zener–Majorana–Stückelberg model consists of two degenerate energy levels whose energies vary with time and in the presence of an interaction which couples the states of the two levels. In the adiabatic limit, it allows for the populations transfer from states of one level to the states of the other level. The presence of an interaction with the environment influences the efficiency of the process. Nevertheless, identification of possible decoherence-free subspaces permits to engineer coupling schemes for which the effects of quantum noise can be made negligible.

https://doi.org/10.1142/s0219749919500497