A group of researchers have discovered methods to enhance the storage time of quantum information in a spin-rich material. As part of the worldwide effort to develop practical quantum networks and quantum computers, an international team of scientists have made significant progress in preserving th
have shown that there is a simple material’s solution to this problem that improves the storage of quantum information beyond hundred microseconds.
“This is a completely new regime for optically active quantum dots where we can switch off the interaction with nuclei and refocus the electron spin over and over again to keep its quantum state alive,” said Claire Le Gall from Cambridge’s Cavendish Laboratory, who led the project. “We demonstrated hundreds of microseconds in our work, but really, now we are in this regime, we know that much longer coherence times are within reach.
Another thing that surprised the researchers was the ‘sound’ that was picked up from the nuclei. It was not quite as harmonious as was initially anticipated, and there is room for further improvement in the system’s quantum coherence through further material engineering.
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