Computers that can use quantum mechanics' 'spooky' properties to solve problems quicker than existing technology may seem appealing, but they must first overcome a major obstacle. Scientists from Japan may have discovered the solution by demonstrating how a superconducting material, niobium nitride,
Researchers at The University of Tokyo grow a nanoscale layer of a superconducting material on top of a nitride-semiconductor substrate, which may help facilitate the integration of quantum qubits with existing microelectronics. Credit: Institute of Industrial Science, The University of Tokyo
Conventional silicon microprocessor manufacturing techniques have grown over decades and are continually being refined and enhanced. On the other hand, the majority ofarchitectures must be created mostly from scratch. However, discovering a technique to integrate quantum and conventional logic units on a single chip, or even adding quantum capabilities to existing fabrication lines, might greatly hasten the adoption of these new systems.
“We found that because of the small lattice mismatch between aluminum nitride and niobium nitride, a highly crystalline layer could grow at the interface,” says first and corresponding author Atsushi Kobayashi.was characterized with X-ray diffraction, and the surface topology was captured using atomic force microscopy. In addition, the chemical composition was checked using X-ray photoelectron spectroscopy.
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