10 of the weirdest experiments of 2021
Inventing an otherworldly time crystal
In July, researchers working with Google revealed that they had created a time crystal inside the heart of the tech giant's quantum computer, Sycamore. The crystal was a completely new phase of matter that the researchers claimed was able to evade the second law of thermodynamics, which dictates that entropy, or the disorder of a system, must always increase. Unlike other systems, which see their entropy increase over time, the time crystal's entropy did not increase no matter how many times it was pulsed with a laser. The truly remarkable thing about the weird quantum crystals is that they are the first objects to break a fundamental symmetry of the universe, called discrete time-translation symmetry. Scientists are hoping to use the otherworldly crystals to test the boundaries of quantum mechanics — the strange rules that govern the world of the very small.
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