![]() But the scientists found that they could “stretch” out the diamond at a molecular level if they laid a thin film of diamond over hot glass. The team wanted to tinker with the structure of the material to see what improvements they could make-a difficult task given how hard diamonds are. Known as Group IV color centers, these qubits are known for their ability to maintain quantum entanglement for relatively long periods, but to do so they must be cooled down to just a smidge above absolute zero. One of the most promising types of qubits is made from diamonds. Department of Energy national lab affiliated with UChicago, to experiment with the materials these qubits are made from to see if they could improve the technology. High’s lab worked with researchers from Argonne National Laboratory, a U.S. “Most qubits today require a special fridge the size of a room and a team of highly trained people to run it, so if you’re picturing an industrial quantum network where you’d have to build one every five or 10 kilometers, now you’re talking about quite a bit of infrastructure and labor,” explained High. The qubits that make up these nodes are very sensitive to heat and vibrations, so scientists must cool them down to extremely low temperatures to work. One of the chief issues lies within the “nodes” that would relay information along a quantum network. But there are significant challenges to work out before it could become a widespread, everyday technology. Quantum bits, or qubits, have unique properties that make them of interest to scientists searching for the future of computing networks-for example, they could be made virtually impervious to hacking attempts. “This technique lets you dramatically raise the operating temperature of these systems, to the point where it’s much less resource-intensive to operate them,” said Alex High, assistant professor with the Pritzker School of Molecular Engineering, whose lab led the study. 29 in Physical Review X, can make future quantum networks more feasible. The researchers hope the findings, published Nov. The change also makes the bits easier to control. A future quantum network may become less of a stretch thanks to researchers at the University of Chicago, Argonne National Laboratory and Cambridge University.Ī team of researchers announced a breakthrough in quantum network engineering: By “stretching” thin films of diamond, they created quantum bits that can operate with significantly reduced equipment and expense.
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