Physicist → Quantum Research: What Changes and What Doesn't

If you already know the postulates of quantum mechanics, Hilbert spaces, and operators, you're not starting over. You're relearning familiar ideas through a new vocabulary: a "state" becomes a qubit, an "observable" becomes a measurement in a specific basis, unitary evolution becomes a "gate." What's genuinely new is quantum information theory specifically (entanglement measures, error-correcting codes, and circuit-based ways of describing a computation) plus hands-on tooling most physics degrees don't cover: writing and running real circuits on cloud-accessible quantum hardware.

The fastest path for a physicist is usually not "start from F1": it's skimming the early conceptual modules quickly to pick up the vocabulary shift, then spending real time in the hands-on tooling, where the actual new skill lives.