Ein einzelnes mikroskopisch kleines Glaskorn, das in einem Lichtstrahl schwebt, hat gerade ein neues Fenster in den Quantenbereich geöffnet.
https://www.sciencealert.com/physicists-quantum-entangled-a-levitating-speck-of-glass-with-light-at-room-temperature
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From the article
In what may be the world’s tiniest disco, physicists intertwined the grain’s properties with those of light so tightly that one could not be described without including the other.
This is quantum [entanglement](https://www.sciencealert.com/entanglement) – and this experiment marks the first demonstration of persistent entanglement between the motion of a levitated object and light that travels away from it, all without cryogenically cooling the apparatus.
It’s a milestone that the researchers say could open new avenues for quantum communication and tests of quantum physics.
„I have always been fascinated by the possibility of observing quantum effects in macroscopic systems, something that occurs notably in quantum optomechanics experiments,“ physicist Francesco Marin of the University of Florence in Italy told ScienceAlert.
He and his colleagues [had already shown](https://doi.org/10.1038/s41467-025-59213-3) that they could use light to cool the motion of a levitating glass nanosphere, bringing it into the strange domain where quantum effects start to become important.
„My next goal was to push the interaction between the light and the nanosphere’s motion to the point of generating entanglement – arguably the most defining and counter-intuitive phenomenon in quantum mechanics,“ Marin said.
Science Fiction is turning into science reality at a shocking rate since 2020.
I don’t know if this is a headline or one of those redacted comments where the words get randomly replaced