00:00A cloud of ultra-cold rubidium atoms demonstrates a fascinating quantum optics phenomenon.
00:06Laser pulses enter an ultra-cold atomic cloud, exhibiting an anomalous propagation time delay.
00:13Interference fringes shift backward as evanescent wave coupling accelerates light packets past
00:19standard luminal limits. Quantum interference within the resonant medium accelerates group
00:25velocity beyond standard light speed boundaries. This bizarre quantum phenomenon demonstrates how
00:32photons interact with rubidium atoms to create a negative time delay.
