Zero velocity photon production from receding refractive media?

There appears to be a simple recipe for producing photons with arbitrarily small velocities:

Swing a backward facing torch, with refractive index n, around in a circle at c/n.

The resulting photons appear to be at rest or arbitrarily slow in the lab frame. It seems they can be captured and analysed.

Is this true ?

Can light be dragged by fluid? is similar, but doesn’t specifically address this phenomenon.