Accelerate The Super-current to Turn on The Light Emission And Obtain The Unique Properties of The Quantum World

Overview of Accelerating Overcurrent

Wang Jigang, professor of physics and astronomy at Iowa State University, project leader, and senior scientist at the Ames Laboratory of the U.S. Department of Energy, said: Scientists have seen unexpected things in supercurrents. Supercurrents have no resistance at ultra-low temperatures. The electric current passing through the material breaks the symmetry, which is prohibited by the laws of classical physics.
The Ames Laboratory was the first to use light pulses of terahertz frequencies to accelerate electron pairs in supercurrents. In this case, the researchers tracked the light emitted by the accelerating electron pair and found that it was "second harmonic light emission", which is used to accelerate the electrons at twice the frequency of the incident light, which is similar to the color shift from the red spectrum to Navy blue. These second harmonic terahertz radiation is prohibited in superconductors.

Quantum Phenomena That Prohibit Light Emission

Research collaborators include Ilias Perakis, professor and chair of physics at the University of Alabama at Birmingham, Raymond R. Holton, professor of engineering, and Theodore H. Ge from the University of Wisconsin-Madison. Professor Baller. Perakis said: Forbidden light emission allows us to access a kind of strange quantum phenomenon called forbidden Anderson pseudo-spin precession.
These phenomena are named after the late Philip W. Anderson. Anderson was one of the co-winners of the Nobel Prize in Physics in 1977. He conducted theoretical research on the movement of electrons in disordered materials such as glass that lack regular structures. The new research is achieved through a tool called quantum terahertz spectroscopy, which can visualize and guide electrons. Use a terahertz laser flash as a control knob to accelerate supercurrents and obtain new and potentially useful quantum states of matter.
Scientists say that understanding of this and other quantum phenomena can help drive major innovations. Just as today's gigahertz transistors and 5G wireless routers replaced megahertz vacuum tubes or thermionic valves more than half a century ago, scientists are looking for a leap in design principles and novel devices to achieve quantum computing and communication capabilities. Finding ways to control, acquire and manipulate the special characteristics of the quantum world, and connect them with real world problems, is a major scientific endeavor today. The National Science Foundation has included quantum research in its "Top Ten Ideas" that are vital to the country's future research and development.

Superconducting Symmetry Breaking

The determination and understanding of the symmetry breaking of superconducting states is a new frontier in the discovery of basic quantum matter and practical quantum information science. The second harmonic generation is a basic symmetric probe, which will help develop future quantum computing strategies and high-speed, low-energy electronic products. However, before they can get there, researchers need to explore the quantum world more. This forbidden second harmonic light emission in superconductors represents a fundamental discovery of quantum matter.

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