Multilevel Laser Induced Continuum Structure

Abstract

Laser-induced-continuum-structure (LICS) allows for coherent control techniques to be applied in a Raman type system with an intermediate continuum state. The standard LICS problem involves two bound states coupled to one or more continua. In this paper, we discuss the simplest non-trivial multistate generalization of LICS which couples two bound levels, each composed of two degenerate states through a common continuum state. We reduce the complexity of the system by switching to a rotated basis of the bound states, in which different sub-systems of lower dimension evolve independently. We derive the trapping condition and explore the dynamics of the sub-systems under different initial conditions.

Coherent interaction of multistate quantum systems possessing the Majorana and Morris-Shore dynamic symmetries with pulse trains

“…The Morris-Shore transformation has been generalized to an arbitrary many manifolds of degenerate states [12], and its extensions and applications have been reviewed by Shore [13]. Recently, this transformation has been generalized to unequal detunings [14] and different time dependences of the couplings [15].…”