Center for Quantum Research and Technology (CQRT)
Nature Physics article out: Dynamics of the weakly bound helium dimer
OU postdoc Qingze Guan and Blume collaborated with Maksim Kunitski, Reinhard Doerner and others from Frankfurt University and the GSI in Darmstadt on the helium dimer. The helium dimer is one of the most weakly-bound “naturally” occurring molecules. Since it’s so weakly bound, the preparation and manipulation of this fascinating molecule are rather tricky. Unless you isolate the dimer and are extremely careful, it tends to fall apart… Maksim and coworkers set up an ingeneous molecular beam experiment and used femto-second lasers to probe the system. The theory calculations by Qingze do not only match the experimental data, without a single adjustable parameter, but additionally provide unique insights. Check out the article entitled “Ultrafast manipulation of the weakly bound helium dimer”, which just appeared in Nature Physics, and the accompanying “News & Views” highlight entitled “Gently stirred not shaken” by Daniel Rolles.
Marino receives DOE grant for quantum enhanced fiber sensing
An interdisciplinary collaborative effort led by Alberto Marino involving Louisiana State University and Oak Ridge National Laboratory was funded by DOE. The initiative will leverage recent developments in quantum information science in sensing. The project will aim at improving current commercial techniques for leakage detection in the oil and gas industry by using quantum states of light to enhance the sensitivity of fiber optic sensors beyond the classical limit. The goal is to outperform the sensitivity of available state-of -the art techiques by one or two orders of magnitude. More information can be found here.
Postdoctoral position in theoretical condensed matter physics
The Center for Quantum Research and Technology (CQRT) at the University of Oklahoma invites applications for one postdoctoral scholar position in Theoretical Condensed Matter physics, starting in the summer or fall of 2021. The successful candidate will work primarily in the group of Prof. Bruno Uchoa, and will interact with other members of the CQRT in the areas of Condensed Matter and Atomic, Molecular and Optical physics. Primary areas of interest include but are not limited to twisted graphene bilayers, topological phases of matter, and strongly correlated quantum systems.
The position is expected to last for two years, with a possible extension for a third year upon availability of funds. Candidates should send a CV (pdf file) containing a list of publications, a description of main research achievements and arrange for three reference letters to be sent to email@example.com. Applications received by December 31, 2020 will receive full consideration. The position will remain open until filled.
Announcing: Prospective Graduate Student (Virtual) Open House
The Department of Physics and Astronomy is hosting a prospective graduate student virtual open house on Tuesday, November 17, and Thursday, December 3. We will have representatives from the admission committee, our Women in Physics group, our Lunar Sooners group, and our physics graduate student association in attendance. More information about the open house can be found here.
Robert Lewis-Swan joins CQRT
Robert Lewis-Swan has recently joined the CQRT as an assistant professor of physics in the AMO group. Robert has expertise in non-equilibrium dynamics and quantum entanglement. Welcome!
Deborah Watson selected as APS fellow
Emeritus faculty Deborah Watson has been nominated Fellow of the American Physical Society for " the innovative use of group theory and graphical techniques toward the solution of the quantum many-body problem." Congratulations!
OU-WSU paper highlighted in Physical Review A
A joint theory-experiment paper by the Blume group from OU and the Engels group from Washington State University (WSU) was selected as an Editors' Suggestion by Physical Review A. The theory efforts were spearheaded by OU postdoc Dr. Qingze Guan and the experimental data were taken by Thomas Bersano and Dr. Sean Mossman, both from WSU. The work explores two realizations of a two-state model in a rubidium Bose-Einstein condensate, realized through Raman coupling of hyperfine states and lattice coupling in momentum space. The difference in the two realizations is highlighted by a particularly important role of interactions in the lattice coupling case. The work can be accessed at the APS website: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.101.063620.
Schwettmann and Biedermann receive DOD DEPSCOR grant
OU Physics Professors Arne Schwettmann (PI) and Grant Biedermann (Co-PI) have been awarded $584,418 by the Department of Defense through the Defense Established Program to Stimulate Competitive Research (DEPSCoR) for their research project "Harnessing entanglement in ultracold atomic gases.”
For more info, see award announcement.
Alberto Marino and Ian Sellers awarded Presidential Professorship
CQRT members Alberto Marino and Ian Sellers were the recipients of the Ted S. Webb Presidential Professorship awarded by the University of Oklahoma. The award recognizes faculty members who excell in all their professional activities and who relate those acticities to the students they teach and mentor.
For more information, see announcement.
Physicists Develop Approach to Increase Performance of Solar Energy
Members of the Photovoltaic Materials and Devices Group, led by OU associate professor in the Homer L. Dodge Department of Physics and Astronomy, Ian Sellers, along with theorists at Arizona State University, led by David K. Ferry, have demonstrated a breakthrough toward the development of a hot carrier solar cell. The work was recently published in Nature Energy.
See more in the press release.
CQRT Director interviewed BY KGOU
The CQRT director Alberto Marino was interviewed by KGOU at the inauguration of the Center for Quantum Technology. The area of quantum physics could generate billions of dollars worth of technology over the next decade. The interview can be found at https://www.kgou.org/post/oklahoma-invests-quantum-technology-research.
Post doctoral and graduate research positions available
Now accepting applications to join a vibrant and exciting new research team focused on implementations of quantum information processing in neutral atom systems. Our group explores facets of quantum control ranging from quantum sensing with atom interferometers to multi-atom entanglement using interactions between ultra-cold Rydberg atoms in optical tweezers. Contact Grant Biedermann for more information: firstname.lastname@example.org
Blume Group has Physical Review A hat-trick!
The Blume group published three papers in October issue of Physical Review A
OU postdoc Dr. Qingze Guan carefully mapped out the energy landscape of two and three identical bosons in the presence of one-dimensional spin-orbit coupling, shedding new light on Efimov’s generalized radial scaling law:
published October 21, 2019
Prof. Doerte Blume collaborated with Prof. Dajun Wang’s experimental group from the Chinese University of Hong Kong on an intriguing dimer-dimer inelastic collision resonance. Thanks to the Wang team for taking such beautiful experimental few-body data!
published October 14, 2019
OU postdocs Dr. Jianwen Jie and Dr. Qingze Guan explored the performance of so-called SU(1,1) interferometers and investigated the benefits of entangling spin-dependent collisions for state preparation and state readout:
published October 11, 2019
CQRT Dedication Ceremony on October 25
Presidential Dream Course on Quantum Hybrid Systems
A second quantum technology revolution is upon us! The first used the laws of quantum physics to design systems in which the energy is “quantized,” to allow only certain values. This idea is at the heart of technology ranging from TV remotes to supercomputers. Now, two other features of quantum mechanics, entanglement and superposition, are becoming accessible to control. To do so we must unite the incredible delicacy and uniformity of single atoms with the robust control and reproducibility of larger devices, forming “quantum hybrid systems.”
This Presidential Dream course will give students competence in the fundamentals so that they may pursue research and careers in this field. As part of the course world experts will come to OU to give lectures and meet with students.
CQRT Opens Multiple Faculty Positions
The Center for Quantum Research and Technology is receiving applications for five faculty positions in the areas of Atomic, Molecular, and Optical (AMO) and Condensed Matter (CM) physics.
OU Physicists Predict Novel Mott State in Graphene at the Magic Angle
A University of Oklahoma physics group sheds light on a novel Mott state observed in twisted graphene bilayers at the 'magic angle' in a recent study just published in Physical Review Letters.
Schwettmann Wins NSF Career Award
OU Physics Professor Arne Schwettmann is the recipient of a National Science Foundation CAREER (Faculty Early Career Development Program) Award for research on ultra cold atoms.
Theory-Experiment Team Observed Quantum Mechanical Two-Body Collisions One at a Time
To better understand atomic collisions, Qingze Guan of the University of Oklahoma in Norman and colleagues from Heidelberg University developed a way to watch two atoms crash together.