Time crystal
quantum system whose ground state is one in which the particles are in repetitive motion From Wikipedia, the free encyclopedia
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A time crystal is a quantum system that has repeating periodic oscillations of one or more physical measurements in its ground state when seen over time.
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Just as an ordinary crystal is seen to have its atoms arranged in repeating patterns in space, so a time crystal has a repeating patterns that occur over time. [1] [2]
In 2012, the American Nobel Prize winner Frank Wilczek proposed the concept of a time crystal.
In 2017, the atomic physicist Chris Monroe and his group found evidence of oscillations in optically excited chains of ytterbium ions with the behavior predicted for time crystals but not in the same way theorized in 2012.
In 2021, physicists filmed a time crystal for the first time.[3]
In early 2024, The Technical University of Dortmund said that they had made a time crystal that lasted forty minutes.[4]
Time crystals may one day be used as quantum memories. [5]
The term "time crystal" has also been used in science fiction media to refer to different unrelated fictional devices.
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