 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
| . |  |
. |
 by Staff Writers West Lafayette, IN (SPX) Sep 07, 2021
As recently as 2019, spin defects known as qubits were discovered in 2D materials (hexagonal boron nitride), which could amplify the field of ultrathin quantum sensing. These scientists hit a snag in their discovery that has unleashed a scientific race to resolve the issues. The sensitivity of spin qubits in hexagonal boron nitride was limited by their low brightness and the low contrast of their magnetic resonance signal. Last month, Nature Physics published an article titled "Quantum sensors go flat," highlighting the benefits and outlining current shortfalls of this new means of sensing via qubits in 2D materials. A team of researchers at Purdue University took on the challenge of overcoming qubit signal shortcomings in their work to develop ultrathin quantum sensors with 2D materials. Their publication in Nano Letters demonstrates that they have solved some of the critical issues and yielded better results through experimentation. "We used a gold film to increase the brightness of spin qubits by up to 17-fold," said Tongcang Li, associate professor of physics and astronomy and electrical and computer engineering. "The gold film supports the surface plasmon that can speed up photon emission so we can collect more photons and, hence, more signals. In addition, we improved the contrast of their magnetic resonance signal by a factor of 10 by optimizing the design of a microwave waveguide. As a result, we substantially improved the sensitivity of these spin defects for detecting magnetic field, local temperature and local pressure."
Research Report: "High-Contrast Plasmonic-Enhanced Shallow Spin Defects in Hexagonal Boron Nitride for Quantum Sensing"
Berkeley and Caltech team up to build quantum network testbed Berkeley CA (SPX) Sep 02, 2021 Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California, Berkeley (UC Berkeley) will be home to a cutting-edge quantum network testbed, thanks to a new five-year, $12.5 million funding award from the U.S. Department of Energy (DOE). Led by personnel from Berkeley Lab's Scientific Networking Division/ESnet, UC Berkeley, and Caltech, the R and D collaboration will also leverage quantum development efforts at Berkeley Lab and beyond. The goal is to build a distributed qu ... read more
|
|||||||||||||
|
|
| The content herein, unless otherwise known to be public domain, are Copyright 1995-2024 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us. |
del.icio.us
Digg
Reddit
Google
