Prof. Patrick Vora, Director of the QSEC, was recently invited by the Science Off Camera Podcast for an interview on quantum materials, their development and methods of characterization, and the role of QSEC in this research area. The podcast is available here.
The Science Off Camera Podcast is sponsored by Teledyne Princeton Instruments and Teledyne Photometrics and hosted by Dr. Matthew Kose-Dunn and Sebastian Remi, to discuss with scientists and industry leaders in scientific imaging and spectroscopy.
For more information, please explore our website to learn more about our efforts in quantum research and education.
Mason’s Quantum Material Center (QMC), one of the four Transdisciplinary Centers for Advanced Study supported by the Provost Office of Research, is now officially Quantum Science and Engineering Center (QSEC).
QSEC was established in February 2018 and has grown beyond its roots as a materials science organization to a community of Mason scientists and engineers interested in advancing quantum technology. Our members focus on creating quantum algorithms for quantum computing, constructing ultra-sensitive quantum sensors, designing and discovering quantum materials for new computing technologies, and building training programs to prepare Mason students for a technological workforce that will increasingly require a knowledge of quantum science and engineering.
QSEC will continue supporting the exploration of these high-risk high-reward ideas by fostering a collaborative, interdisciplinary, community-focused environment at Mason where some of the most challenging problems in quantum can be freely explored in new ways through convergent research. This provides a unique environment and access for graduate students, undergraduate students, and postdoctoral researchers to make transformative contributions to quantum technology. Seeking to accelerate the second quantum revolution by combining the efforts of physicists, mathematicians, computer scientists, and engineers, QSEC pursues these goals in collaboration with industrial partners, government organizations, and national consortia.
For more information, please explore our website to learn more about our efforts in quantum research and education.
Valleytronics and neuromorphic computing are under heavy investigation as next-generation information processing technologies. In valleytronics information is stored and manipulated by moving carriers between energy band extrema (i.e., valleys) in momentum-space. Achieving this requires a material where carriers can be selectively populated in individual valleys and manipulated on demand. In this work, the team explored the possibility of achieving a single material, e.g. 2D transition metal dichalcogenide alloys, where both valleytronic and neuromorphic functionality can be combined. Their result shows that both valley polarization and valley coherence remain large in their alloy, which also appear to host valley-polarized excitons that are more resistant to phonon-induced depolarization mechanisms. This implies that at elevated temperatures alloys may outperform pure WSe2 in valleytronic applications.
According to Dr. Vora, these results are the first systematic examination of valley properties in 2D phase change materials and point to a new class of devices where valleytronics can be utilized in concert with phase change elements in hybrid next-generation computing architectures.
Last week, the Quantum Materials Center (QMC) hosted their first student seminar that allows graduate students and postdocs to present their research to the members of the QMC for feedback and review. This seminar was the first in the QMC’s student speaker series. The experience allows students to gain valuable understanding on presenting and refining their research for future endeavors. The speaker at this seminar, Mr. Jaafar Ansari, is a graduate student who is pursuing a M.S in Computational Sciences and Informatics and is looking to continue into his doctoral studies in 2020. He works closely under Dr. Karen Sauer, a founding member of the QMC, to both assist her with research as well as continuing his own. He presented his paper, “Using DFT to Determine NQR Frequencies”, to members and students of the center. The recently published paper for the same work presented can be found here.
Figure 1: Mr. Jaafar Ansari presenting his paper to members and students of the center at the student seminar hosted on October 10, 2019.
For more information about the QMC, please visit qsec.gmu.edu