News & Research Highlights

Other
JILA's Mike Bennett wins Anne K. Heinz Staff Award for Excellence in Outreach and Engagement
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Hard work pays off. Mike Bennett was honored by CU for expanding JILA's outreach efforts through the Partnerships for Informal Science Education in the Community. 

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Atomic & Molecular Physics | Laser Physics | Other
Chris Greene, former JILA Fellow, named to National Academy of Sciences
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Chris Greene, professor of physics and astronomy at Purdue University and former JILA Fellow, was named to the National Academy of Sciences.

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Quantum Information Science & Technology
Chaos reigns in a quantum ion magnet
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JILA researchers have proposed an experiment that would allow them to study rapid scrambling of quantum information, similar to what happens at the event horizon of a black hole. 

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Investigators: Ana Maria Rey
Other
JILA’s PISEC High School Poster Symposium brings real science to students
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High school students got a chance to show off their research at JILA.

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Investigators: Eric Cornell
Atomic & Molecular Physics
Marit Fiechter wins SPIN prize for best undergraduate physics thesis
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Marit Fiechter, an undergraduate at the University of Groningen and former JILA student, won the SPIN prize for best undergraduate thesis project.

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Investigators: Jun Ye
Atomic & Molecular Physics
Optical tweezers achieve new feats of capturing atoms
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Trapping single atoms is a bit like herding cats, which makes researchers at the University of Colorado Boulder expert feline wranglers. In a new study, a team led by physicist Cindy Regal showed that it could load groups of individual atoms into large grids with an efficiency unmatched by existing methods.  

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Investigators: Cindy Regal
Laser Physics
The Snowflake of Insulators
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By using ultrafast lasers to measure the temperature of electrons, JILA researchers have discovered a never-before-seen state in an otherwise standard semiconductor. This research is the most recent demonstration of a new technique, called ultrafast electron calorimetry, which uses light to manipulate well-known materials in new ways.

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Related Publications: Ultrafast electron calorimetry uncovers a new long-lived metastable state in 1T-TaSe2 mediated by mode-selective electron-phonon couplingInvestigators: Margaret Murnane | Henry Kapteyn
Biophysics
Pulling apart HIV
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JILA researchers have demonstrated a much easier, faster and more precise way to understand the structure and function of the HIV RNA molecule, especially the HIV RNA hairpin. Furthermore, the techniques developed for this research promise to allow a wider range of users to study similar biological molecules, as they are built upon commercially available and user-friendly atomic force microscopes, or AFMs.

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Related Publications: High-precision single-molecule characterization of the folding of an HIV RNA hairpin by atomic force microscopyInvestigators: Thomas Perkins
Atomic & Molecular Physics
Buckyballs Play by Quantum Rules
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When the Ye group measured the total quantum state of buckyballs, we learned that this large molecule can play by full quantum rules. Specifically, this measurement resolved the rotational states of the buckyball, making it the largest and most complex molecule to be understood at this level.

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Related Publications: Rovibrational quantum state resolution of the C60 fullereneInvestigators: Jun Ye
Atomic & Molecular Physics
The Strontium Optical Tweezer
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JILA researchers have, for the first time, trapped a single alkaline-earth atom and cooled it to its ground state. To trap this atom, researchers used an optical tweezer, which is a laser focused to a pinpoint that can hold, move and manipulate atoms. The full motional and electronic control wielded by this tool enables microscopically precise studies of the limiting factors in many of today’s forefront physics experiments, especially quantum information science and metrology. 

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Related Publications: Microscopic Control and Detection of Ultracold Strontium in Optical-Tweezer ArraysInvestigators: Adam Kaufman
Atomic & Molecular Physics
The First Quantum Degenerate Polar Molecules
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Understanding chemistry requires understanding both molecules and quantum physics. The former defines the start and end of chemical reactions, the latter dictates the dynamics in between. JILA researchers now have a better understanding of both.

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Related Publications: Microscopic Control and Detection of Ultracold Strontium in Optical-Tweezer ArraysInvestigators: Jun Ye
Atomic & Molecular Physics
Jun Ye and Deborah Jin named 2018 Highly Cited Researchers
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JILA Fellows Jun Ye and Deborah Jin (1968 to 2016) have been named Highly Cited Researchers for 2018 by Clarivate Analytics.The list of Highly Cited Researchers, published annually since 2014, recognizes scientists across the world who have demonstrated significant influence through publication of multiple highly cited papers during the last decade.

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Investigators: Deborah Jin | Jun Ye
Atomic & Molecular Physics
Taming Chemistry at the Quantum Level
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In the vast stretches between solar systems, heat does not flow and sound does not exist. Action seems to stop, but only if you don’t look long enough. Violent and chaotic actions occur in the long stretches of outer space. These chemical reactions between radicals and ions are the same reactions underlying the burn of a flame and floating the ozone above our planet. But they’re easy to miss in outer space because they’re very rare.

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Related Publications: Quantum-state-controlled reactions between molecular radicals and ionsInvestigators: Heather Lewandowski
Biophysics | Quantum Information Science & Technology
Perkins and Lehnert Awarded Department of Commerce Medals
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JILA Fellows Dr. Tom Perkins and Dr. Konrad Lehnert both received medals from the Department of Commerce last night at the Ronald Reagan Amphitheater in Washington, D.C. Dr. Perkins received the Gold Medal, which is the highest honorary award given by the United States Department of Commerce, or DOC. Perkins was recognized for creating the world’s best atomic force microscope tailored to biological measurements. This device can “grab” onto biological molecules, such as proteins, and measure the tiny forces involved in their folding and unfolding.

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Investigators: Thomas Perkins | Konrad Lehnert
Quantum Information Science & Technology
Quiet Drumming: Reducing Noise for the Quantum Internet
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Quantum computers are set to revolutionize society. With their expansive power and speed, quantum computers could reduce today’s impossibly complex problems, like artificial intelligence and weather forecasts, to mere algorithms. But as revolutionary as the quantum computer will be, its promises will be stifled without the right connections. Peter Burns, a JILA graduate student in the Lehnert/Regal lab, likens this stifle to a world without Wi-Fi.  

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Related Publications: Rovibrational quantum state resolution of the C60 fullereneInvestigators: Cindy Regal | Graeme Smith | Konrad Lehnert
Laser Physics
Turn it Up to 11 – The XUV Comb
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With the advent of the laser, the fuzzy bands glowing from atoms transformed into narrow lines of distinct color. These spectral lines became guiding beacons visible from the quantum frontier. More than a half century later, we stand at the next frontier. The elegant physics that will decode today’s mysteries (such as dark matter, dark energy, and the stability of our fundamental constants, to name a few) is still shrouded in shadows. But a new tool promises illumination. 

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Related Publications: Phase-matched extreme-ultraviolet frequency-comb generationInvestigators: Jun Ye
Quantum Information Science & Technology
Jun Ye Stars in Feature Film
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JILA Jun Ye hit the big screen this summer as he debuted in the feature-length documentary, “The Most Unknown”.

“The Most Unknown” brings together nine scientists from across the globe, all of whom are using science to answer deep philosophical questions, such as how did life begin, and what is time? The scientists are brought together, (“blind-date style,” as the New Yorker’s review accurately describes it) to discuss how their work from various fields might overlap.

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Investigators: Jun Ye
JILA PFC News
JILA Centers
Atomic & Molecular Physics | Precision Measurement | Quantum Information Science & Technology
Twisting Atoms to Push Quantum Limits
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The chaos within a black hole scrambles information. Gravity tugs on time in tiny, discrete steps. A phantom-like presence pervades our universe, yet evades detection. These intangible phenomena may seem like mere conjectures of science fiction, but in reality, experimental comprehension is not far, in neither time nor space. Astronomical advances in quantum simulators and quantum sensors will likely be made within the decade, and the leading experiments for black holes, gravitons, and dark matter will be not in space, but in basements – sitting on tables, in a black room lit only by lasers.

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Related Publications: Cavity-mediated collective spin-exchange interactions in a strontium superradiant laserInvestigators: Ana Maria Rey | James Thompson
Quantum Information Science & Technology
Cindy Regal Named 2018 GRC Cruickshank Lecturer
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JILA Fellow Cindy Regal has been named a 2018 Alexander M. Cruickshank Lecturer by the Gordon Research Conferences (GRC). This prestigious title is given worldwide to scientists at the top of their fields in the physical, chemical, and biological sciences. 

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Investigators: Cindy Regal