Dispersive properties and giant Kerr non-linearities in Dipole Induced Transparency

摘要

We calculate the dispersive properties of the reflected field from a cavitycoupled to a single dipole. We show that when a field is resonant with thedipole it experiences a 90 degree phase shift relative to reflection from abare cavity if the Purcell factor exceeds the bare cavity reflectivity. We thenshow that optically Stark shifting the dipole with a second field can be usedto achieve giant Kerr non-linearites. It is shown that currently achievablecavity lifetimes and cavity quality factors can allow a single emitter in thecavity to impose a nonlinear $\pi$ phase shift at the single photon level.