Physicists use light waves to accelerate supercurrents, enable ultrafast quantum computing

ScienceDaily | 7/1/2019 | Staff
Goobee (Posted by) Level 4
Then he backed up and clarified all that. After all, the quantum world of matter and energy at terahertz and nanometer scales -- trillions of cycles per second and billionths of meters -- is still a mystery to most of us.

"I like to study quantum control of superconductivity exceeding the gigahertz, or billions of cycles per second, bottleneck in current state-of-the-art quantum computation applications," said Wang, a professor of physics and astronomy at Iowa State University whose research has been supported by the Army Research Office. "We're using terahertz light as a control knob to accelerate supercurrents."

Superconductivity - Movement - Electricity - Materials - Resistance

Superconductivity is the movement of electricity through certain materials without resistance. It typically occurs at very, very cold temperatures. Think -400 Fahrenheit for "high-temperature" superconductors.

Terahertz light is light at very, very high frequencies. Think trillions of cycles per second. It's essentially extremely strong and powerful microwave bursts firing at very short time frames.

Wang - Team - Researchers - Light - Quantum

Wang and a team of researchers demonstrated such light can be used to control some of the essential quantum properties of superconducting states, including macroscopic supercurrent flowing, broken symmetry and accessing certain very high frequency quantum oscillations thought to be forbidden by symmetry.

It all sounds esoteric and strange. But it could have very practical applications.

Supercurrents - Path - Forward - Design - Materials

"Light-induced supercurrents chart a path forward for electromagnetic design of emergent materials properties and collective coherent oscillations for quantum engineering applications," Wang and several co-authors wrote in a research paper just published online by the journal Nature Photonics.

In other words, the discovery could help physicists "create crazy-fast quantum computers by nudging supercurrents," Wang wrote in a summary of the research team's findings.

Ways - Access - Manipulate

Finding ways to control, access and manipulate...
(Excerpt) Read more at: ScienceDaily
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