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JILA graduate student Alexander Aeppli is one of a team of researchers working on the world’s most precise clocks. In the laboratory of JILA and NIST Fellow Jun Ye, Aeppli focuses on improving the strontium atomic clock using powerful ultrastable lasers. “The laser drives an electronic transition in strontium,” Aeppli explained. “And we want to make sure the transition within the strontium is exact.” Before the transition occurs, the strontium atoms are trapped within an optical lattice inside the clock. Once trapped, the strontium atoms can transition when exposed to a particular color (or frequency) of light, and the researchers, like Aeppli, measure this transition frequency as a form of timekeeping. The frequency can then be used as the precise standard of time worldwide.

JILA and NIST Fellows David Nesbitt's and Jun Ye's recent results in their breathalyzer study have been highlighted in a new article in Scientific American. Using frequency combs, a particular type of laser array, scientists could detect specific molecules in the breath, including diseases like COVID-19. This research suggests huge implications for the future of disease diagnosis and prevention.

Heidi Shyu, undersecretary of defense for research and engineering at the U.S. Department of Defense, visited JILA and the University of Colorado Boulder on Monday to glimpse the future of cutting-edge research.

From the university’s proximity to national laboratories and quantum-intensive companies to the high volume of pioneering alumni, ���Ҵ�ý�ƽ������ has long been a leader in the quantum space. This legacy has led to a push in innovation and technology, including as it pertains to national security—a goal also shared by Shyu and the Department of Defense.

JILA and NIST Fellows Jun Ye and David Nesbitt, along with their respective teams, have recently been highlighted in the latest issue of the SPIE Photonics West Show Daily, a publication from SPIE. This highlight focuses on the recent advancements in the frequency comb breathalyzer apparatus that the researchers have built and tested, which looks at diagnosing COVID-19 and other diseases.

JILA researchers have upgraded a breathalyzer based on Nobel Prize-winning frequency-comb technology and combined it with machine learning to detect SARS-CoV-2 infection in 170 volunteer subjects with excellent accuracy. Their achievement represents the first real-world test of the technology’s capability to diagnose disease in exhaled human breath.

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.

Quantum gases of interacting molecules can exhibit unique dynamics. JILA and NIST Physicist Jun Ye has spent years of research to reveal, probe, and control these dynamics with potassium-rubidium molecules. In a new article published in Nature, Ye and his team of researchers describe having combined two threads of previous research—spin and motional dynamics—to reveal rich many-body and collisional physics that are controllable in the laboratory.

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, 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.

Atomic clocks are essential in building a precise time standard for the world, which is a big focus for researchers at JILA. JILA and NIST Fellow Jun Ye, in particular, has studied atomic clocks for two decades, looking into ways to increase their sensitivity and accuracy. In a new paper published in Science Advances, Ye and his team collaborated with JILA and NIST Fellow Ana Maria Rey and her team to engineer a new design of clock, which demonstrated better theoretical understanding and experimental control of atomic interactions, leading to a breakthrough in the precision achievable in state-of-the-art optical atomic clocks.