According to the British "New Scientist" magazine website reported on the 24th, US scientists use laser cooling technology, for the first time will be three atomic molecules cooled to near absolute zero (-273.15 ℃), which is the technology so far the largest molecule of cooling. Scientists believe this miracle will eventually be used to make molecular-weight computers and could also be a good helper for chemists.
Laser cooling technology has been used by physicists to cool many individual atoms since the 1970s, but cooling molecules has been problematic. In laser cooling, the energy level of the system needs to match that of the cooled laser. The more atoms a molecule contains, the more complex the atom's vibration and rotation, the harder it is to match, and the harder it is to cool.
But now Ivan Kozyev and colleagues at the Massachusetts Institute of Technology's Harvard Center for Ultra-Cold Intentions try to cool the compound containing three atoms of strontium (HOSr) to near absolute zero using laser cooling. Kozyyev believes that this technique can be extended to cool molecules containing around 15 atoms.
Kozyev said the ultra-cold molecules are expected to become the basis of the molecular quantum computer, "In fact, the laser can not only be used to cool molecules, but also can be used to accurately return to its original state if the physicists By controlling which part of the molecule vibrates, you can use this technique to store information. "
Vincent Bergere of the University of Birmingham in England points out that the latest research is impressive because it is very tricky to cool molecules to such a low temperature, but it is still a long way from being a quantum computer into reality Progress in this area is too slow. In addition, molecules cooled to near absolute zero may react more slowly and allow for a more detailed observation of their reactions, so this technique may be a boon to chemists.
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