A theory of molecule-induced circulary polarised emission for a lumine
scent chiral-achiral pair employing the multipolar Hamiltonian in both
the Schrodinger and Heisenberg formulations of Coulomb gauge quantum
electrodynamics is presented. Chirality is induced in an achiral speci
es via intermolecular coupling with a chiral molecule. In the Schrodin
ger picture time-dependent perturbation theory is used with intermolec
ular interaction involving virtual photon exchange. In the Heisenberg
framework the electric dipole moment of the achiral molecule couples t
o the time-dependent Maxwell fields of the chiral source. The equivale
nce of the matrix element obtained for the process using both approach
es is demonstrated. The transition rate is then derived for the differ
ential spontaneous emission of left- and right-circularly polarised ra
diation. Various orientational averages are computed and the dependenc
e of the rate expression on intermolecular separation is investigated.