The self-consistent harmonic theory developed in the preceding paper for th
e study of classical solvation dynamics in glassy media is extended to trea
t quantum solvation. In particular, a quantum set of optimized normal modes
and a methodology for calculating, quantum mechanically, all multiphonon c
ontributions to solvation are presented. The simulation of solvation dynami
cs in a low temperature glass shows nontrivial quantum effects. The relatio
nship between the quantum theory presented in this work and previous theori
es is discussed. (C) 2000 American Institute of Physics. [S0021-9606(00)510
05-8].