Breakthrough in magnon research paves the way for mini quantum computers
Physicists led by Andrii Chumak from the University of Vienna extended magnon lifetimes 100-fold to 18 microseconds, clearing a key barrier to coin-sized quantum computers. The breakthrough was achieved by exciting short-wavelength magnons and cooling ultra-pure spheres of yttrium iron garnet to 30 millikelvin.
Physicists have made a breakthrough in magnon research, extending their lifetimes 100-fold to 18 microseconds. This achievement paves the way for the development of mini quantum computers and quantum sensing. The team, led by Andrii Chumak from the University of Vienna, achieved this by exciting short-wavelength magnons and cooling ultra-pure spheres of yttrium iron garnet to 30 millikelvin. The researchers found that the remaining limit on magnon lifetime is determined by material purity, not fundamental laws of physics. With lifetimes of 18 microseconds, magnons can become robust quantum memories and low-loss communication links on a chip. The discovery opens a path for further progress in materials science to improve magnon lifetimes.
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