Scientists use light to accelerate supercurrents, access forbidden light, quantum world

Phys.org ^ | https://phys.org/news/2020-05-scientists-supercurrents-access-forbidden-quantum.html | Iowa State University

[BenLurkin]

The scientists have seen unexpected things in supercurrents—electricity that moves through materials without resistance, usually at super cold temperatures—that break symmetry and are supposed to be forbidden by the conventional laws of physics, said Jigang Wang, a professor of physics and astronomy at Iowa State University, a senior scientist at the U.S. Department of Energy's Ames Laboratory and the leader of the project.

"The forbidden light gives us access to an exotic class of quantum phenomena—that's the energy and particles at the small scale of atoms—called forbidden Anderson pseudo-spin precessions," Perakis said.

...

Wang's recent studies have been made possible by a tool called quantum terahertz spectroscopy that can visualize and steer electrons. It uses terahertz laser flashes as a control knob to accelerate supercurrents and access new and potentially useful quantum states of matter. The National Science Foundation has supported

[BenLurkin]

ping

[steel_resolve]

Investigate Wang for being a part of the thousand talents program

[BipolarBob]

I just knew unobtanium had to be involved somehow.

[Nateman]

One of the neat things about superconductivity is the way it excludes magnetic fields. In this video an object cooled first in liquid nitrogen to achieve superconductivity is put on a race track of strong magnets. Notice how even when the object is traveling upside down the magnetic fields induced actually keep the object running smooth across it's race track.

[Nateman]

Opps! wrong link. Here is the right one

[MrChips]

Don’t scientists learn English?

[MrChips]

Practical application?

[Telepathic Intruder]

"new and potentially useful quantum states of matter."

[MrChips]

And yet no one can envision a potential use?

[SunkenCiv]

Thanks BenLurkin.

Another Superconductivity ping.

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[Telepathic Intruder]

Did anyone envision a potential use for electricity when it was first discovered? Did the knowledge of the existence of bacteria lead to anything useful? Abstract knowledge doesn’t always have immediate payoffs.

[steve86]

That was amazing.

[steve86]

Sent the link to my brother whose dissertation was on superconductivity in about 1964.

[Freedumb]

What a giant Bardeen was! Two Nobel prizes in physics. First for co-inventing the transistor at Bell Labs and the second 16 years later for being one of the creators of the theory explaining superconductivity. And yet most Americans have no idea who he is/was.

[SunkenCiv]

Oh sure, won it twice, but never unshared, so, what a loser. /sarc

It's a little odd that no one else has ever won a second one, but of course, there are more scientists in each succeeding generation, and it used to seem unlikely to be any more Nobels in Physics that are unshared, the last time was in 1992, whichi is a while ago already.

The unshared ones have tended to be awarded near the ends of lives or ends of careers, a sort of lifetime achievement award.

[Reeses]

one day could be applied to high-speed, quantum computers

Translation: send more money. Every published physics discovery these days throws that one out. It's where the money is. To really make the sale, some also try to claim a connection to global warming.

[tired&retired]

This also explains some of the attributes of higher frequencies of consciousness.

Thanks for posting this.

[Nateman]

4 people have won 2 Noble prizes. Linus Pauling, Marie Curie, John Bardeen and Frederick Sanger

[GOPJ]

I can’t get your link to work... can you give an address? Thanks.