Nonequilibrium and Nonperturbative Dynamics of Ultrastrong Coupling in Open Lines
Nonequilibrium and Nonperturbative Dynamics of Ultrastrong Coupling in Open Lines
We study the time and space resolved dynamics of a qubit with an Ohmic coupling to propagating 1D photons, from weak coupling to the ultrastrong coupling regime. A nonperturbative study based on Matrix Product States (MPS) shows the following results: (i) The ground state of the combined systems contains excitations …