A single-oscillator quantum model for magnetochiral birefringence

We derive an analytical expression for the magnetochiral birefringence of a dilute diamagnetic chiral molecular medium subjet to a constant magnetic field. We use the single-oscillator model of Condon [Rev. Mod. Phys. 9, 432 (1937)] and Condon et al. [J. Chem. Phys. 5, 753 (1937)] to describe the optical properties of the individual molecules. The result is a function of the refractive index and the rotatory power. This result is compared to experimental data.