Stimulated emission-abosrption are CPT analogs, one allows for state preparation for photonic quantum computers - couldn't we use the second for CPT analogue of state preparation?

If so, e.g. by placing such photonic chip inside flux of ring laser, we could both push photons to it, and simultaneously pull through it for better control - in theory being able attack NP problems.

Article: Preprint Two-way quantum computers adding CPT analog of state preparation