The quantum Hall effect (QHE) is usually associated with an
incompressible fluid of fermions in externally applied magnetic fields.
Both the magnetic field - which gives rise to Landau quantization, and
the fermionic nature of the electrons - which gives rise to
incompressibility, seem to play crucial roles here. Nonetheless, in
this talk, I will show how the physics of "chiral" QHE edge modes can
be transcribed to photonic systems, where the degrees of freedom are
neutral bosons. The photonic analogs of QHE edge states described
here form channels that permit light to propagate along one direction
only.