Department News

Aug 26, 2019 - Research Highlight: Topology driven by interactions

Nodal-line semimetals are a class of materials where the Fermi surface has the form of closed loops with low energy Dirac fermions as quasiparticles. Interactions can spontaneously break symmetries and open an energy gap around those lines. When the gap has nodes around the nodal line, as in the 3D quantum anomalous Hall effect, which is topological, the nodes form Weyl points connected by Fermi arcs, as shown above. Those fermi arcs describe topologically protected surface states, with a non-universal Hall conductivity. Prof. Bruno Uchoa’s group is interested in the interplay of strong many-body interactions and novel macroscopic manifestations of quantum phenomena. 

Aug 26, 2019 - CQRT hiring multiple faculty: applications due by October 20

The Homer L. Dodge Department of Physics and Astronomy at the University of Oklahoma (OU) invites applications for five faculty appointments in the areas of Atomic, Molecular, and Optical (AMO) and Condensed Matter (CM) physics. The hires are part of an initiative in fundamental research that enables quantum technology. The Center for Quantum Research and Technology (CQRT) has recently been established with support from donor endowments, the state legislature, and the university. A new state-of-the-art physics building hosts 18,000 square feet of laboratory space that meets NIST-A specifications on vibrations, temperature, humidity, and electromagnetic interference. Campus resources include cleanroom facilities and supercomputer access. 

Position 1: Director of the CQRT and Homer L. Dodge Chair in AMO or CM physics. Candidates are expected to be internationally recognized leaders in their field. The Center Director will take the lead role in determining the scientific direction of the CQRT through hiring of Center faculty and allocation of Center resources.  This endowed position comes with an annual research stipend. Start-up funds commensurate with the candidate’s research agenda will be made available. Please contact Michael Santos (msantos@ou.edu) if you have questions regarding this position. To submit your application, go to https://apply.interfolio.com/66266.  

Position 2: Tenure-track Assistant Professor or Associate/Full Professor in experimental quantum physics with a research focus in AMO physics. Exceptional candidates will be considered for an endowed Chair position. Please contact Alberto Marino (marino@ou.edu) if you have questions regarding this position. To submit your application, go to https://apply.interfolio.com/66271.  

Positions 3 and 4: Tenure-track Assistant Professor or Associate/Full Professor in experimental quantum materials or quantum physics with a research focus in CM physics. Two positions are available. Exceptional candidates will be considered for an endowed Chair position. Please contact Michael Santos (msantos@ou.edu) if you have questions regarding these positions. To submit your application, go to https://apply.interfolio.com/66239. 

Position 5: Tenure-track Assistant Professor or Associate/Full Professor in theoretical quantum physics with a research focus in AMO or CM physics. Exceptional candidates will be considered for an endowed Chair position. Please contact Doerte Blume (Doerte.Blume-1@ou.edu) if you have questions regarding this position. To submit your application, please go to https://apply.interfolio.com/66276.  

Applicants should have earned a Ph.D. in physics or a related field and have post Ph.D. experience. Successful candidates are expected to teach effectively at both the undergraduate and graduate levels (one class per semester), maintain an outstanding record of original published research, and develop an independent, internationally recognized, externally funded research program that complements and expands existing research efforts at OU on ultracold atoms, molecules, and gases; microelectronic, photonic, and quantum devices; quantum optics; precision spectroscopy; quantum information and entanglement; scanning probe microscopy; quantum, topological, and strongly-correlated materials. The department is interested in candidates who have a demonstrated commitment to excellence by providing leadership in teaching, research, or service toward building an equitable and diverse scholarly environment.

Applications consisting of a cover letter, CV, list of publications, statement of research interests, and statement of teaching interests should be uploaded directly to the web addresses provided above. Applicants for the Center Director position should submit names and contact information for five references through interfolio. Applicants for all other positions should arrange for the submission of three letters of reference through interfolio. Screening of applications will begin October 20, 2019. These positions will remain open until filled. 

 

OU is a Carnegie-R1 comprehensive public research university known for excellence in teaching, research, and serving the educational, cultural, economic and healthcare needs of the state, region, and nation. The 277-acre Research Campus in Norman was named the #1 research campus in the nation by the Association of Research Parks in 2013.

Additional Information can be found at the following links:

http://nhn.ou.edu 

http://www.ou.edu/publicaffairs/oufacts.html 

http://www.ou.edu/content/dam/provost/documents/facultyflipbook.pdf

The University of Oklahoma is an Affirmative Action/Equal Opportunity Employer. Protected veterans and individuals with disabilities are encouraged to apply.

Jul 30, 2019 - OU physicists awarded European Physics Society prize

The CDF and DZero collaborations, the latter of which includes OU faculty members Patrick Skubic, Phillip Gutierrez, Michael Strauss, and Brad Abbott, were awarded the 2019 High Energy and Particle Physics Prize from the European Physical Society for "the discovery of the top quark and the detailed measurement of its properties."  This prestigious prize is awarded every two years for outstanding contributions to the field.  

The discovery of the top quark was announced jointly by the CDF and DZero collaborations in 1995.  At the time, the top quark was the only remaining matter particle predicted by the standard model yet to be observed.  Discovery was made challenging by the large mass of the top quark, which necessitated careful analysis of billions of high-energy proton-antiproton collisions produced by the Tevatron at Fermilab in Illinois.  The large mass of the top quark is also what makes it so fascinating; it is the heaviest of all known fundamental particles, with a mass at the electroweak scale.

In addition to discovering the top quark, the CDF and DZero experiments performed a number of important measurements of its properties.  The top quark mass was measured with a precision of 1%.  The cross section for production of a top-antitop pair was measured with a precision of 10%.  The production of a single top quark is much more rare, being mediated by the weak interaction.  However, the CDF and DZero collaborations also later observed this production mode.

The OU group continues to study top quark properties today, using collisions produced by the Large Hadron Collider at CERN.  Recently, Phillip Gutierrez and postdoc Muhammad Alhroob published the first 3-sigma evidence for the production of a single top quark in association with a Z boson, which is also mediated by the weak interaction.  Along with graduate student Dylan Frizzell, they are now finalizing a publication with incontrovertible 5-sigma observation of this process.

For more information, see: https://eps-hepp.web.cern.ch/eps-hepp/PrizeAnnouncements/XMhep2019/EPS_HEPP2019_long.pdf

Jul 29, 2019 - Conference for Undergraduate Women in Physics

CUWiP, also known as Conference for Undergraduate Women in Physics, is an annual conference series that has been running since 2006. Since its start, conference participation has been growing non-stop. In January 2020, twelve different sites across the US will be hosting CUWiP; the Department of Physics and Astronomy at OU’s Norman campus will serve as one of these host sites. A thirteenth conference will be hosted in Canada at the same time.

Being coordinated under the umbrella of the American Physical Society, all host sites share the same goals and mission. During the three-day conference there will be one national keynote speaker that will be live streamed to all thirteen sites. The remainder of the conference program is being developed independently by each of the thirteen local organizing committees.

Conference Website: https://www.ou.edu/cuwip

Donations are gratefully accepted!! Thank you!

https://thousandsstrong.ou.edu/project/15698/donate

May 23, 2019 - 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.

Collisions between atoms in gases happen all around us, for example in the air that we breathe every day. At room temperature, the collisions are random and very difficult to control. By cooling a gas to ultracold temperatures near absolute zero (below minus 273 degrees Celsius) and trapping it in the center of a vacuum chamber, collisions can be controlled and used to develop new technologies such as quantum-limited sensors for impurities. An ultracold gas behaves like a single quantum mechanical object, a matter wave. Collisions still take place in the matter wave, but they now happen in a predictable fashion. In a sodium matter wave, the collisions can be controlled precisely via microwave radiation. The colliding atoms behave like small magnets with magnetic north and south poles determined by the direction of their atomic spin. During collisions, atoms experience each other's magnetic fields and change their spin directions. As they change directions, the atomic spins become correlated with each other at the quantum level, a phenomenon known as quantum entanglement. Quantum entanglement is useful when atoms are used as sensors. All entangled atoms react to external influences in unison, increasing the sensitivity of a sensor. This research project will use controlled collisions in sodium matter waves to study quantum-enhanced sensing and other quantum technologies. This project will study the role of impurities and will also explore differences and similarities compared to experiments with entangled beams of light. The research will improve our experimental understanding of quantum technologies based on matter waves under realistic conditions, in the presence of loss and impurities. This has practical applications for development of robust quantum-enhanced sensors, for development of quantum-enhanced probes for ultracold gases, and for improving our understanding of how we can control spin in matter waves at the quantum level.

The initial award is $311,908. This is a continuing grant expected to total $500,000 over five years. For more information, go to

https://www.nsf.gov/awardsearch/showAward?AWD_ID=1846965&HistoricalAwards=false

May 22, 2019 - CAREER: Matter-wave quantum optics in spin-space in ultracold sodium gases

Dr. Arne Schwettmann has been awarded $311,908 by the National Science Foundation. This is a continuing grant expected to total $500,000 over five years.

May 01, 2019 - Professor Kaib to Record Planetary Radio Live with Bill Nye

OU astrophysics professor Dr Nathan Kaib will be taking part in a recording of Planetary Radio Live with Bill Nye on May 8 3-4:30pm at the Science Museum Oklahoma.  Seating is first come, first served.  Additional details about the event can be found here: https://www.sciencemuseumok.org/tps

Apr 25, 2019 - Brad Abbott Named Presidential Professor

OU physics professor Brad Abbott has just been named the recipient of the 2019 Brian and Sandra O'Brien Presidential Professorship http://www.ou.edu/facultyawards/award-recipients  Presidential Professors inspire their students, mentor their undergraduate and/or graduate students in the process of research and creative scholarly activity within their discipline, and exemplify to their students (both past and present) and to their colleagues (both at OU and within their disciplines nationwide) the ideals of a scholar through their endeavors in teaching; research and creative scholarly activity; and professional and university service and public outreach.  Congrats Brad!!

Mar 01, 2019 - 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. For more information, view Physics - Synopsis: Watching Atoms Bang Together.

Jan 18, 2019 - Branch Awarded Chambliss Astronomical Writing Award

Physics & Astronomy emeritus professor David Branch has been awarded the AAS' Chambliss Astronomical Writing Award, along with J. Craig Wheeler, for their advanced university-level textbook Supernova Explosions.  News about the award can be found here: http://aas.org/media/press-releases/aas-announces-2019-prize-recipients   Congrats David!!

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