JILA News

Mechanical resonators featuring large tensile stress have enabled a range of experiments in quantum optomechanics and precision sensing. Many sensing applications require functionalizing tensioned resonators by appending additional mass to them. However, this may dramatically change the resonator mode quality factor, and hence its sensitivity.

In our work published in Physical Review Applied, we study how mode quality factor depends on suspending a mass on a type of membrane resonator known as a trampoline.  Surprisingly, the quality factor becomes independent of the mass in the large-load regime, for any tensioned resonator, which explains previous related results and will enable new design perspectives.

Every year the National Institute of Standards and Technology (NIST) and the Department of Commerce (DOC) grant honor awards in the form of Gold, Silver, and Bronze Medals. According to the DOC website: “the Gold and Silver Medals are the highest and second highest honor granted by the Secretary for distinguished and exceptional performance.” Two of JILA’s Fellows, Jun Ye, and Judah Levine, have been awarded these medals.

JILA (a world-leading physics research institute set up by NIST and the University of Colorado Boulder) is part of a multi-university research group that will build quantum-based tools for space-based Earth sensing.  NASA expects to award a $15 million grant for five years to the group of universities. This cohort includes researchers from the University of Texas at Austin, JILA, the University of Colorado Boulder (CU), the University of California Santa Barbara (USCB), the California Institute of Technology (Caltech), and the U.S. National Institute for Standards and Technology (NIST). “The award establishes the Quantum Pathways Institute, supported by a NASA STRI (Space Technology Research Institute), led by Prof. Srinivas Bettadpur of the University of Texas at Austin, Texas, with CU and UCSB as collaborating institutions,” explained Dana Anderson, a JILA Fellow and CU Boulder professor who is involved in the project. The Quantum Pathways Institute is the first of its kind, as it strives to translate the capabilities of quantum physics into usable devices called “Quantum 2.0.” Besides these developments, the Institute will offer educational training for graduate students and postdocs in quantum theory and quantum experimentation.

The CUbit Quantum Initiative at the University of Colorado Boulder has appointed physics professor Noah Finkelstein to serve as faculty director of education and workforce. Finkelstein will lead CUbit’s establishment of a coordinated educational approach that cultivates leaders of the next-generation quantum workforce. 

Associate JILA Fellow and University of Colorado Boulder Assistant Professor Dr. Shuo Sun has been awarded a 2023 Sloan Research Fellowship. Along with 124 other winners, Sun's work has been recognized as being of the highest quality. 

Some of the most important research and discoveries in science have been made by women. To celebrate these inspiring individuals and to support the next generation of female scientists, the United Nations dedicated February 11 as "International Women and Girls in Science" day. To honor this tradition, JILA hosted a panel discussion/open-forum with both JILA Fellows and JILA staff as speakers.

Former JILA Ph.D. student Tobias Bothwell and former JILA postdoctoral researcher Colin Kennedy have been honored by NIST's (the National Institute of Standards and Technology) Physical Measurement Laboratory (PML) with the 2022 Distinguished Associate Awards. 

JILA Fellow Adjoint and the University of Colorado Boulder professor Dr. Jeffrey Linksy has been selected as a Fellow for the American Astronomical Society (AAS). Linksy was cited for "decades of innovative studies of the heliosphere and the local interstellar medium; for his models of stellar chromospheres, for productive observing programs on multiple satellites and for establishing the deuterium-to-hydrogen ratio in the local disk, among other scientific contributions, and for his decades of service to the astronomical community.” At JILA, Linksy's research involves the analysis of high-resolution stellar spectra, primarily in the ultraviolet, to measure the physical properties of stars, the atmospheres of exoplanets, gas in the local interstellar medium, and the abundance of deuterium in the Galaxy. Congratulations Dr. Linksy! 

Surrounded by some of the world’s most advanced lasers, computers, and microscopes sits Brendan McBennett, a graduate student at JILA. McBennett has been working in the laboratories of JILA Fellows Margaret Murnane and Henry Kapteyn, as part of the KM group since 2019, excited to see his research advance significantly over that time. “We use ultraviolet and extreme ultraviolet (EUV) lasers to study heat flow in nanostructured materials,” McBennett states. “EUV photons have a higher photon energy that makes them insensitive to electron dynamics in most materials, combined with nanometer wavelengths. This allows them to very precisely probe surface deformations induced by heat - or thermal phonons – to capture new materials behaviors.” In simple terms, McBennett is looking at heat dissipation in nanoelectronics. “Our experiments are providing a better understanding of phonon thermal transport in nanomaterials to inform the development of new predictive theories,” he says. “The field of phonon transport is still in its infancy, compared to our understanding of electrons and spins. There is a lot of technological potential, for energy efficiency, smarter design of nanoelectronics and quantum devices, and phonon-photon and phonon-electron analogs like phononic crystals and thermal diodes.” McBennett’s previous work at NREL (National Renewable Energy Laboratory) studied the power grid under varying renewable energy and energy efficiency scenarios, and his current research zooms in on this previous focus. 

JILA graduate student Brendan McBennett has been announced as the 2023 recipient of the $10,000 Nick Cobb Memorial Scholarship by SPIE, the international society for optics and photonics, and Siemens EDA. McBennett was cited for this award "for his potential contributions to the field related to advanced lithography." At JILA, McBennett works under the supervision of JILA Fellows and University of Colorado Boulder professors Dr. Margaret Murnane and Dr. Henry Kapteyn.

JILA, NIST Fellow, and University of Colorado Boulder Professor Jun Ye has been appointed to the National Quantum Initiative Advisory Committee. In a recent announcement, President Biden advanced the National Quantum Initiative by appointing fifteen experts in quantum information science to the National Quantum Initiative Advisory Committee (NQIAC), with Ye being one of the members. 

JILA and NIST Fellow as well as University of Colorado Boulder Professor Dr. Jun Ye has been awarded a 2022 Gold Medal from the U.S. Department of Commerce (DOC). The gold medal is the highest honorary award given by the DOC and "is granted by the Secretary for distinguished performance characterized by extraordinary, notable, or prestigious contributions that impact the mission of the Department and/or one or more operating units," according to the DOC. 

JILA scientist Dr. Chen-Ting Liao has been awarded a grant as part of the 2023 Young Investigator Research Program, or YIP. YIP was launched by the Air Force Office of Scientific Research, or AFOSR, the basic research arm of the Air Force Research Laboratory. The AFOSR's mission is to support Air Force goals of control and maximum utilization of air, space, and cyberspace. To do this, AFSOR is awarding $25 million in grants to 58 scientists and engineers from 44 research institutions and businesses in 22 states in 2023. Two grants will be awarded to the quantum information sciences research portfolio for quantum computing funded by the National Security Agency. The remaining awards will be funded by AFOSR YIP and/or core research portfolio funds. YIP recipients receive three-year grants of up to $450,000. 

JILA Fellow, NIST Physicist, and University of Colorado Physics professor Adam Kaufman has been awarded a grant as part of the 2023 Young Investigator Research Program, or YIP. YIP was launched by the Air Force Office of Scientific Research, or AFOSR, the basic research arm of the Air Force Research Laboratory. The AFOSR's mission is to support Air Force goals of control and maximum utilization of air, space, and cyberspace. To do this, AFSOR is awarding $25 million in grants to 58 scientists and engineers from 44 research institutions and businesses in 22 states in 2023. 

JILA graduate student Aaron Young, a researcher in JILA Fellow and NIST Physicist Adam Kaufman’s laboratory has been awarded a 2022 University of Chicago Quantum Creators Prize. The prize is part of the Chicago Quantum Exchange, one of the largest organizations celebrating quantum research and computing in the U.S. As Young explained: “This award is relatively new, this is only the second year it's been around, but I think it does a good job of providing some visibility to junior people in the field - particularly to people outside the academic community like those in industry or in government.” To promote early career research and diversity within the field of quantum science, award winners receive an honorarium of $500, a prize certificate, and reimbursed travel to the 2022 Chicago Quantum Summit. 

When it comes to quantum technology, research and industry often work together to help advance both science and technology. That is why we at JILA congratulate JILA Fellow and University of Colorado Boulder Professor in Physics and Electrical, Compute, & Energy Engineering, Dana Anderson, for his and his team’s work at ColdQuanta, a leading quantum technology company, for being recognized by TIME magazine. Anderson is the founder of ColdQuanta and was the CEO before becoming the Chief Strategy Officer. The technology used at ColdQuanta originated from his laboratory at JILA. 

NIST Chief of the Quantum Physics Division Andrew Wilson is a recipient of 2022’s Jacob Rabinow Applied Research Awards, one of the highest awards that can be given to one of NIST’s 1,600 technical and scientific employees. The award is named after researcher Jacob Rabinow, who received over 200 patents for his inventions in optical, mechanical, and electrical systems while working at the National Bureau of Standards (NBS) the predecessor of NIST. Wilson was cited as being “honored for his dedicated, long-term leadership in quantum information processing through his research.” Wilson’s research is part of the Ion Storage Group at NIST, which focuses on quantum information experiments using entangled atomic ions. 

JILA Fellow and University of Colorado Boulder Distinguished Professor Andreas Becker has been awarded a 2023 fellowship to Optica (formerly the Optical Society of America). Becker's work at JILA focuses on the analysis and simulation of ultrafast phenomena in atoms, molecules, and clusters, in particular attosecond electron dynamics, coherent control, and molecular imaging. Using special laser frequencies, Becker and his team are able to study the dynamics of these atoms and molecules in different time scales. 

JILA Fellow Margaret Murnane has been selected as a recipient of the 2022 Institute of Physics Isaac Newton Medal and Prize. This prestigious award honors the legacy of the famous physicist Sir Isaac Newton, by commending those who have made world-leading contributions in the field of physics. Murnane received the award for pioneering and sustained contributions to the development of ultrafast lasers and coherent X-ray sources and the use of such sources to understand the quantum nature of materials.

Walk down to the basement labs of JILA and you're sure to find something interesting. From atomic clocks to biophysics, researchers are hard at work advancing scientific and technological frontiers. One of these researchers is graduate student Dhruv Kedar. Kedar works in JILA and NIST Fellow Jun Ye's lab, focusing on laser development for a range of applications including optical atomic clocks and optical timescales. “We're really just trying to make the world's best lasers as part of the atomic clock,” explained Kedar. “We do a good job of isolating out any sort of environmental effects so the atomic frequency of the clock doesn't change but gets more precise.” As optical atomic clocks use a series of lasers to control and measure the quantum state evolution inside an atom, which will redefine the SI unit of Second in the foreseeable future, improving the lasers to be themselves free of environmental noise is an important task.