Laser Physics
JILA Fellow Jun Ye has been elected a Member of the American Academy of Arts and Sciences, one of the nation鈥檚 oldest and most prestigious honorary societies. His election recognizes his extraordinary contributions to physics and quantum science, including pioneering advances in optical atomic clocks, precision measurement, and quantum many-body physics.
JILA Fellow Jun Ye has been elected a corresponding member abroad of the Austrian Academy of Sciences (脰sterreichische Akademie der Wissenschaften, OeAW), recognizing his internationally influential contributions to physics and quantum science. Election to the OeAW honors scholars whose work has had a profound impact well beyond Austria and reflects exceptional standing within the global research community.
Researchers at JILA propose a new superradiant laser design for next-generation 鈥渁ctive鈥 atomic clocks that eliminates atom-heating and vibration sensitivity, two major obstacles that have limited precision and practicality. By carefully guiding atoms through a controlled loop of quantum states, the approach could enable compact, robust atomic鈥攁nd potentially nuclear鈥攃locks that maintain extreme accuracy even under physical disturbances.
JILA graduate student Anya Grafov, a member of the Kapteyn鈥慚urnane Group, has been selected as one of just 16 global recipients of the 2026 Zonta International Women in STEM Award, which recognizes exceptional early鈥慶areer women advancing research and innovation in STEM fields worldwide. The award honors Grafov鈥檚 work in ultrafast magnetism and her commitment to fostering more inclusive and equitable scientific communities.
Physicists at 蜜桃传媒破解版下载 have demonstrated a new kind of vacuum ultraviolet laser that could one day allow scientists to observe phenomena currently out of reach for the most powerful microscopes.
The new laser could allow researchers to follow fuel molecules in real time as they undergo combustion, spot incredibly small defects in nanoelectronics, track time with unprecedented precision and more.
The JILA team will present its preliminary findings on March 17 and March 19 at the American Physical Society Global Physics Summit in Denver.
JILA researchers, working with collaborators in Germany, demonstrated that new crystalline mirror coatings dramatically reduce atomic-level noise in optical cavities, enabling lasers with record鈥慴reaking frequency stability. By outperforming traditional coatings by a factor of four, these mirrors open the door to more precise experiments and future advances in technologies such as atomic clocks and gravitational鈥憌ave detection.
JILA researchers have taken a major step toward realizing next鈥慻eneration nuclear clocks by studying how thorium鈥慸oped crystals behave over time. In new experiments published in Nature, the team tracked the stability, temperature response, and reproducibility of three calcium鈥慺luoride crystals containing different concentrations of thorium. Over nearly a year of measurements, all three crystals demonstrated remarkably stable nuclear transition frequencies鈥攁n essential requirement for building reliable nuclear clocks.
Dr. Kai Li, a researcher in the Jun Ye Group, has been named the recipient of the 2026 European XFEL Young Scientist Award. This prestigious honor is awarded annually to an early-career scientist who has made exceptional contributions through experiments conducted at the European X-ray Free-Electron Laser (XFEL).
JILA Fellow and University of Colorado Boulder Physics Professor Heather Lewandowski and members of her lab have shattered a 25-year-old theory about how benzene forms in the interstellar medium, revealing that the long-accepted chemical recipe doesn鈥檛 work under space-like conditions. Their groundbreaking laser-cooling experiments open a new chapter in understanding the origins of complex carbon molecules in the cosmos.
In a study published in Physical Review X Quantum, a team led by JILA and NIST Fellow and University of Colorado Boulder physics professor Jun Ye has demonstrated鈥攆or the first time鈥攏arrow-line laser cooling of a molecule. By utilizing a previously unaddressed transition in the diatomic molecule yttrium monoxide (YO), the researchers have developed a new approach to manipulate internal states and molecular motion with unprecedented precision.