1301.5661 (Bartlomiej Gardas et al.)

Initial states of qubit-boson models leading to conserved quantities    [PDF]

Bartlomiej Gardas, Jerzy Dajka

There are initial conditions of composite qubit-environment systems which provide conservation of certain qubit observables but are not associated with a conservation law related to a symmetry of the system. This states are shown to form a subspace of the qubit-environment space of states. General construction of such states is presented and illustrated by two examples: The first one is exactly solvable Jaynes-Cummings model and the second is the multi-photon Rabi model.

View original: http://arxiv.org/abs/1301.5661