Summary: JILA (joint CU Boulder/NIST institute) is arguably the world epicenter of AMO-based quantum sensing and precision metrology - optical lattice clocks, atom interferometric gravimeters, and the Q-SEnSE NSF Quantum Leap Challenge Institute all live here.
Notes: Unmatched density of quantum-sensing postdoc positions for a single campus; tight collaboration with NIST scientists next door.
Warnings: Boulder housing costs have risen sharply and now rival much larger metros relative to local wages.