Jigang Wang patiently explained his latest discovery in quantum control that could lead to superfast computing based on quantum mechanics. He mentioned light-induced superconductivity without energy gap. He brought up forbidden supercurrent quantum beats. And he mentioned terahertz-speed symmetry breaking.
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 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 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.
“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.
Finding ways to control, access and manipulate the special characteristics of the quantum world and connect them to real-world problems is a major scientific push these days. The National Science Foundation has included the “Quantum Leap” in its “10 big ideas” for future research and development.
“By exploiting interactions of these quantum systems, next-generation technologies for sensing, computing, modeling and communicating will be more accurate and efficient,” says a summary of the science foundation’s support of quantum studies. “To reach these capabilities, researchers need understanding of quantum mechanics to observe, manipulate and control the behavior of particles and energy at dimensions at least a million times smaller than the width of a human hair.”
Wang and his collaborators – Xu Yang, Chirag Vaswani and Liang Luo from Iowa State, responsible for terahertz instrumentation and experiments; Chris Sundahl, Jong-Hoon Kang and Chang-Beom Eom from the University of Wisconsin-Madison, responsible for high-quality superconducting materials and their characterizations; Martin Mootz and Ilias E. Perakis from the University of Alabama at Birmingham, responsible for model building and theoretical simulations – are advancing the quantum frontier by finding new macroscopic supercurrent flowing states and developing quantum controls for switching and modulating them.
A summary of the research team’s study says experimental data obtained from a terahertz spectroscopy instrument indicates terahertz light-wave tuning of supercurrents is a universal tool “and is key for pushing quantum functionalities to reach their ultimate limits in many cross-cutting disciplines” such as those mentioned by the science foundation.
And so, the researchers wrote, “We believe that it is fair to say that the present study opens a new arena of light-wave superconducting electronics via terahertz quantum control for many years to come.”
The Latest on: Quantum computing
via Google News
The Latest on: Quantum computing
- Scientists' discovery is paving the way for novel ultrafast quantum computerson January 15, 2021 at 8:36 am
Scientists at the Institute of Physics of the University of Tartu have found a way to develop optical quantum computers of a new type. Central to the discovery are rare earth ions that have certain ...
- The incredible physics behind quantum computingon January 15, 2021 at 2:11 am
Can computers do calculations in multiple universes? Scientists are working on it. Step into the world of quantum computing.
- Error-protected quantum bits entangled for the first timeon January 13, 2021 at 9:39 am
For the first time, physicists from the University of Innsbruck have entangled two quantum bits distributed over several quantum objects and successfully transmitted their quantum properties. This ...
- Bavarian State and Institutions Launch ‘Munich Quantum Valley’ to Develop Quantum Computing Technologyon January 13, 2021 at 6:34 am
A quantum computer that outperforms conventional computers, tap-proof communication methods and fundamental elements of quantum ...
- The Quantum Computer Revolution Must Include Womenon January 13, 2021 at 5:33 am
Physics is still dominated by men, which means we’re largely missing out on the talents of half the population ...
- Intel's Horse Ridge II may help overcome quantum computing conundrumon January 12, 2021 at 8:19 pm
Horse Ridge II builds on the company's first-generation controller. Share. Contact.
- Quantum computing research helps IBM win top spot in patent raceon January 12, 2021 at 5:42 am
IBM secured 9,130 US patents in 2020, more than any other company as measured by an annual ranking, and this year quantum computing showed up as part of Big Blue's research effort. The company ...
- IBM Leads in Quantum Computing, Ford in Driverless Car Patentson January 12, 2021 at 3:38 am
Artificial intelligence, quantum computers and autonomous vehicles are among the fastest-growing areas of technology, with American companies often in the lead, according to a new study of U.S.
- Boehringer Ingelheim and Google Announce Quantum Computing Partnership for Pharma R&Don January 11, 2021 at 7:40 am
Boehringer Ingelheim announced today a collaborative agreement with Google Quantum AI (Google), focusing on researching and implementing cutting-edge use cases for quantum computing in pharmaceutical ...
- Google's quantum computing division will help develop new drugson January 11, 2021 at 7:28 am
Google’s Quantum AI division is teaming with pharmaceutical company Boehringer Ingelheim to develop new types of drugs, the companies announced. The idea is to research and develop quantum computing ...
via Bing News