On-chip GHz time crystals with semiconductor photonic devices pave way to new physics and optoelectronic applications

https://phys.org/news/2024-05-chip-ghz-crystals-semiconductor-photonic.html

"relates high non-linear exciton-polariton dynamics and coherent GHz optomechanics... high-quality semiconductor-based sample acting as trap for coherent light-matter condensates... atom-thick semiconductor layers in vacuum, forming micron-sized box trapping millions of quantum particles... enables frequencies several orders magnitude higher than before, leading to time crystals on semiconductor platform... future: photon-to-radiofrequency conversion at quantum level, integrated and microwave photonics"

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Scientists successfully create a time crystal made of giant atoms
https://phys.org/news/2024-07-scientists-successfully-crystal-giant-atoms.html

The experimental observation of a dissipative time crystal in a Rydberg gas
https://phys.org/news/2024-07-experimental-dissipative-crystal-rydberg-gas.html