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Bismuth-based Nanoribbons Show 'Topological' Transport, Potential for New Technologies
January 20, 2016 | Purdue UniversityEstimated reading time: 5 minutes
The measurements were performed while the nanoribbons were chilled to about minus 273 degrees Celsius (nearly minus 460 degrees Fahrenheit).
“We have to operate at low temperatures to observe the quantum mechanical nature of the electrons,” Chen said.
Future research will include work to further investigate the nanowires as a platform to study the exotic physics needed for topological quantum computations. Researchers will aim to connect the nanowires with superconductors, which conduct electricity with no resistance, for hybrid topological insulator-superconducting devices. By further combining topological insulators with a superconductor, researchers may be able to build a practical quantum computer that is less susceptible to the environmental impurities and perturbations that have presented challenges thus far. Such a technology would perform calculations using the laws of quantum mechanics, making for computers much faster than conventional computers at certain tasks such as database searches and code breaking.
The research and the team have been supported with funding from the U.S. Defense Advanced Research Projects Agency, Intel Corp., National Science Foundation, Department of Energy and the Purdue Center for Topological Materials.
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