#quantum physics
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Quantum Experiment Confirms Photons' Negative Dwell Time in Atomic Cloud
Photons can emerge from a rubidium cloud so early they seem to spend negative time inside it — and weak measurements of ...
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Quantum Limit Discovered: Electrical Resistance from Particle Collisions Hits a Ceiling
Ultracold potassium atom experiments show that collision-driven resistance increases only up to a point, suggesting a fu...