Extending the Concept of Probability Flux

Abstract

We develop the Husimi map for visualizing quantum wavefunctions using coherent states as a measurement of the local phase space to produce a vector field related to the probability flux. Adapted from the Husimi projection, the Husimi map is complimentary to the usual flux map, since they are identical for small coherent states. By improving our understanding of the flux operator and offering a robust and flexible alternative, we show how the Husimi projection can provide a map to the classical dynamics underlying a quantum wavefunction. We demonstrate its capabilities on bound systems with electromagnetic fields, as well as on open systems on and off resonance.