Scientists at TU Wien and the Okinawa Institute of Science and Technology achieved the first self-induced superradiant quantum maser, where quantum particles spontaneously cooperate to generate stable microwave signals without external power.
The team coupled nitrogen-vacancy centers in diamond to a microwave cavity and discovered that dipole-dipole interactions between spins—previously considered disruptive—actually sustain emission by continuously redistributing energy and repopulating energy levels.
The breakthrough, published in Nature Physics, could enable ultra-precise atomic clocks, improved GPS navigation, enhanced radar systems, and quantum sensors for medical imaging and environmental monitoring.
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