Scientists make a quantum harmonic oscillator at room temperature

https://phys.org/news/2023-01-scientists-quantum-harmonic-oscillator-room.html

"controls location and energy of quantum particles... applications: OLEDs and miniature lasers... organic semiconductor produce polaritons which show quantum states...  trapped light in thin layer of organic semiconductor sandwiched between two highly reflective mirrors... Polaritons, like moisture in the air, can condense... corralled this quantum liquid within pattern of laser beams made fluid oscillate... excite sample in one place, polariton lasing in another...  useful not only for lasers, but also for solar cells"

Related: Dual-wavelength lasing: A new tool for steering high-harmonic generation

https://phys.org/news/2023-05-dual-wavelength-lasing-tool-high-harmonic-generation.html