Jigang Wang patiently explained his latest discovery in quantum control, which could lead to super-fast quantum-mechanics computing: He mentioned light-induced superconductivity without an energy gap. He raised banned super current quantum beats. And he mentioned breaking the terahertz velocity symmetry.
Then he backed up and clarified everything. After all, the quantum world of matter and energy in the terahertz and nanometer range ̵
"I Like to Investigate Gigahertz's Quantum Control of Superconductivity" Wang, a professor of physics and astronomy at Iowa State University, whose research was supported by the Army Research Office. "We use terahertz light as a control knob to accelerate superconductivity."
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 of trillions of cycles per second. These are basically extremely strong and powerful microwave bursts that are triggered in very short periods of time.
Wang and a research team have shown that with such light, some of the essential quantum properties of superconducting states can be controlled, including macroscopic flow of super-current, refracted symmetry, and accessing certain very high-frequency quantum oscillations that are believed to be are prohibited by symmetry.
That sounds esoteric and strange. But it could have very practical applications.
"Light-induced super currents show a way forward for the electromagnetic design of emergent material properties and collective coherent oscillations for quantum engineering applications," Wang and several co-authors wrote in a recent research report online from the journal Nature Photonics .
In other words, the discovery could help physicists "create crazy fast quantum computers by triggering super currents," Wang wrote in a summary of the research team's findings.
] It is a great scientific thrill to find ways to control, manipulate, and manipulate the intrinsic properties of the quantum world. The National Science Foundation has included the "quantum leap" in its "10 Big Ideas" for future research and development.
"By leveraging the interactions of these quantum systems, next-generation technologies for capturing, computing, modeling, and communicating will be more accurate and efficient," the Science Foundation summarizes support for quantum studies. "To achieve these capabilities, researchers need quantum mechanics to observe, manipulate, and control the behavior of particles and energy that are at least one million times smaller than the width of a human hair."
Wang and his associates – Xu Yang, Chirag Vaswani and Liang Luo from Iowa state, responsible for terahertz instruments and experiments; Chris Sundahl, Jong-Hoon Kang and Chang-Beom Eom of the University of Wisconsin-Madison, responsible for high quality superconducting materials and their characterization; Martin Mootz and Ilias E. Perakis from the University of Alabama at Birmingham, who are responsible for modeling and theoretical simulations, are driving the quantum boundary by finding new macroscopic overcurrent conditions and developing quantum controls to switch and modulate them.
A Summary According to a study by the research team, experimental data obtained with a terahertz spectroscopic instrument suggest that terahertz light wave tuning of super currents is a universal tool, "and the key is that quantum functionalities in many cross-disciplinary disciplines reach their extreme limits "from the Science Foundation.
And so the researchers wrote, "We believe it is justified to say that the present study opens a new arena of superconducting lightwave electronics over terahertz quantum control for many years."
Physicists use terahertz flashes to expose matter states hidden by superconductivity
X. Yang et al., Lightwave-driven Uninterrupted Superconductivity and Forbidden Quantum Strikes by Breaking Terahertz Symmetry, Nature Photonics (2019). DOI: 10.1038 / s41566-019-0470-y
Physicists Use Lightwaves to Accelerate Supercurrents and Enable Ultrafast Quantum Computing (2019, July 1)
retrieved on 2 July 2019
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