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A New Method Could Enable More Stable and Scalable Quantum Computing, Penn Physicists Report


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A false color image of one of the researchers' samples.

Researchers from the University of Pennsylvania, in collaboration with Johns Hopkins University and Goucher College, have discovered a new topological material which may enable fault-tolerant quantum computing.

Credit: Penn News

Researchers at the University of Pennsylvania (Penn), Johns Hopkins University, and Goucher College have discovered a new topological material that may enable more stable and scalable quantum computing.

The team says they subjected the material to thermal annealing, in which "the metal directly enters the nanostructure, providing good electrical contact and can be easily patterned into the nanostructure using standard lithography, allowing for easy scalability of custom superconducting circuits in a topological insulator."

The researchers tested the material's superconductivity by exposing it to extremely low temperatures and a magnetic field.

Penn professor Marija Drndic says of particular value in this method "is the combination of the electrical transport performance and the direct insights from the actual device materials characterization."

The researchers say the device is potentially scalable, and they plan to build more advanced devices that aim to build a qubit out of existing systems, and vary metals to tune material properties.

From Penn News
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