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PHONONS IN FOCUS: Phonon lasers are used to trap and levitate nanoparticles in the laboratory of Nick Vamivakas, the Marie C. Wilson and Joseph C. Wilson Professor of Optical Physics at the University of Rochester. (University of Rochester photo / J. Adam Fenster)
The lasers utilize individual particles of vibration or sound to measure quantum mechanics and gravity.
When lasers were invented in the 1960s, they opened new avenues for scientific discovery and everyday applications from scanners at the grocery store to corrective eye surgery. Conventional lasers control photons—individual particles of light—but over the past 20 years, scientists have invented lasers that control other fundamental particles, including phonons—individual particles of vibration or sound. Controlling phonons could open even more possibilities with lasers, such as taking advantage of unique quantum properties like entanglement.
A new squeezed phonon laser developed by researchers at the University of Rochester and Rochester Institute of Technology provides precise control over phonons at the nanoscale level. This could give new insights into the nature of gravity, particle acceleration, and quantum physics. In a paper in Nature Communications, the researchers describe how they coax these individual particles of mechanical motion to behave like a laser.
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