News & Highlights

Quantum Adventures with Cold Molecules

Published: September 7, 2017 - 1:15pm | Source: The Ye Group

Researchers at JILA and around the world are starting a grand adventure of precisely controlling the internal and external quantum states of ultracold molecules after years of intense experimental and theoretical study. Such control of small molecules, which are the most complex quantum systems that can currently be completely understood from the principles of quantum mechanics, will allow... read more -->

Leah Dodson Wins 2017 Miller Prize

Published: July 18, 2017 - 4:00pm | Source: The Ye Group

Leah Dodson won the Miller Prize at the 72nd International Symposium on Molecular Spectroscopy, held June 19–23 in Urbana, Illinois. Dodson is an NRC postdoc whose official advisor is Jun Ye, but who primarily works on molecular spectroscopy in the Mathias Weber lab. Her award-winning talk was entitled “Oxalate Formation in Titanium––Carbon Dioxide Anionic Clusters Studied by Infrared... read more -->

Bryce Bjork Awarded 2017 Rao Prize

Published: July 17, 2017 - 7:15am | Source: The Ye Group

Bryce Bjork’s talk entitled “Direct Measurement of OD+CO-> cis-DOCO, trans-DOCO, and D+CO2 Branching Kinetics using Time-Resolved Frequency Comb Spectroscopy” was selected by a panel of judges at the International Symposium on Molecular Spectroscopy as one of three winners of the 2017 Rao Prize. The prize... read more -->

Quantum Leaps

Published: December 21, 2016 - 11:00am | Source: The Ye Group

Research associate Shimon Kolkowitz and his colleagues in the Ye group and Rey theory group have developed a powerful new way to experimentally simulate the complex behavior of electrons in solids. In these experiments, the team uses its strontium lattice optical clock not to track time, but to take advantage of the ultracold atoms in the clock mimicking the quantum behavior of electrons in a... read more -->

Molecules at the Quantum Frontier

Published: December 19, 2016 - 5:00pm | Source: The Ye Group

Deborah Jin, Jun Ye, and their students wrote a review during the summer of 2016 for Nature Physics highlighting the accomplishments and future directions of the relatively new field of ultracold-molecule research. The field was pioneered by the group’s creation of the world’s first gas of ultracold potassium-rubidium (KRb) molecules in 2008.

The molecules were made by first... read more -->

Seeing A Key Air Pollution Reaction In Unprecedented Detail

Published: November 2, 2016 - 12:45am | Source: FORBES

Bryce Bjork, Thinh Bui and colleagues use cavity-enhanced frequency comb spectroscopy to monitor in real time important chemical reaction kinetices of OH + CO.  For the first time, they have detected the short-lived elusive intermediate HOCO under ambient conditions. 

To read more about this work, see... read more -->

The Radical Comb-Over

Published: October 27, 2016 - 9:15am | Source: The Ye Group

Frequency comb spectroscopy is making it possible to watch chemical reactions unfold in real time

Using frequency comb spectroscopy, the Ye group has directly observed transient intermediate steps in a chemical reaction that plays a key role in combustion,... read more -->

NRC Postdocs Ed Marti and Shimon Kolkowitz Win Outstanding Presentation Award

Published: July 29, 2016 - 1:15pm | Source: The Ye Group

NRC Postdoc Ed Marti received an Outstanding Presentation Award for his presentation of the poster "Spin-Orbit Coupled Fermions in an Optical Clock" at the 2016 Boulder Laboratories Postdoctoral Poster Symposium held on July 20.  This recognition was shared with NRC Postdoc Shimon Kolkowitz, who originally submitted the abstract as well as prepared the poster and a two-minute-two-slide... read more -->

Stalking the Wild Molecules

Published: May 4, 2016 - 11:15am | Source: The Ye Group

The Ye group just solved a major problem for using molecular fingerprinting techniques to identify large, complex molecules: The researchers used an infrared (IR) frequency comb laser to identify four different large or... read more -->

The Ultramodern Molecule Factory: I. Doublons

Published: April 20, 2016 - 7:00am | Source: The Ye Group

The old JILA molecule factory (built in 2002) produced the world’s first ultracold polar molecules [potassium-rubidium (KRb)] in 2008. The old factory has been used since then for ultracold chemistry investigations and studies of the quantum behavior of ultracold molecules and the atoms that form them. The Jin-Ye group, which runs the molecule factory, is now wrapping up operations in the old... read more -->

Quantum Baseball

Published: March 31, 2016 - 10:30am | Source: The Ye Group

The Ye and Rey groups have discovered the strange rules of quantum baseball in which strontium (Sr) atoms are the players, and photons of light are the balls. The balls control the players by not only getting the atoms excited, but also working together. The players coordinate throwing and catching the balls. While this is going on, the balls can change the state of the players! Sometimes the... read more -->

Ye Lab student from Boulder High places 1st in local science fair

Published: February 5, 2016 - 8:45am | Source: The Ye Group

Matthew Radzihovsky, a Boulder High School student who has been doing research in Jun Ye's lab for over a year now, recently presented some of his work at the local science fair, Corden Pharma Regional Science Fair.  His presentation was well received.  He placed 1st in Physics and was selected to present this work in the Intel International Science and Engineering Fair as a 2016 Finalist in... read more -->

Creative Adventures in Coupling

Published: January 28, 2016 - 5:00pm | Source: The Ye Group

The Rey and Ye groups are in the midst of an extended collaboration on using the Ye group’s strontium (Sr) lattice clock for studies of spin-orbit coupling in pancake-like layers of cold Sr atoms. Spin-orbit coupling means an atom’s motion is correlated with its spin. It occurs in everyday materials when negatively charged electrons move in response to electromagnetic fields inside a crystal.... read more -->

Jun Ye Selected for 2015 Presidential Rank Award

Published: December 16, 2015 - 2:00pm | Source: The Ye Group

President Obama has selected JILA Fellow Jun Ye of NIST's Quantum Physics Division to receive a 2015 Presidential Rank Award. The award cited Ye's work advancing "the frontier of light-matter interaction and focusing on precision measurement, quantum physics and ultracold matter, optical frequency metrology, and ultrafast science."

The Presidential Rank... read more -->

A Thousand Splendid Pairs

Published: November 6, 2015 - 3:15pm | Source: The Ye Group

JILA’s cold molecule collaboration (Jin and Ye Groups, with theory support from the Rey Group) recently made a breakthrough in their efforts to use ultracold polar molecules to study the complex physics of large numbers of interacting quantum particles. By closely packing the molecules into a 3D optical lattice (a sort of “crystal of light”), the team was able to create the first “highly... read more -->

Combing frequencies: NSF-funded center provides spectrum of new research, technology

Published: June 23, 2015 - 2:30pm | Source: National Science Foundation

A National Science Foundation Discovery feature highlights the work of the Ye Lab in their dramatic development of laser frequency comb applications that have, according to the article "transformed basic scientific research and led to new technologies in so many different fields--timekeeping, medical research, communications, remote sensing, astronomy, just to name a few."

... read more -->

About Time

Published: April 21, 2015 - 9:30am | Source: JILA Communications

The Ye group has just improved the accuracy of the world’s best optical atomic clock by another factor of three and set a new record for clock stability. The accuracy and stability of the improved strontium lattice optical clocks is now about 2 x 10-18, or the equivalent of not varying from perfect time by more than one second in 15 billion years—more than the age of the Universe. Clocks like... read more -->

The World's Time

Published: April 16, 2015 - 10:45am | Source: American Physical Society

In this article appearing on the American Physical Society website, Andrei Derevianko investigates the latest generation of atomic clocks led by Jun Ye's research team at JILA and how these technological advances could achieve a future definition for the world's time. read more -->

A Bug’s Life

Published: April 14, 2015 - 10:15am | Source: JILA Communications

The Ye Group recently investigated what first appeared to be a “bug” in an experiment and made an unexpected discovery about a new way to generate high-harmonic light using molecular gases rather than gases of noble atoms.

Graduate student Craig Benko and his colleagues in the Ye group were studying the interaction of light from an extreme ultraviolet (... read more -->

Three JILAns Win 2015 NSF Graduate Research Fellowships

Published: April 1, 2015 - 5:00pm | Source: JILA Communications

JILA graduate students Stephen Okoniewski (Perkins group), Jake Pettine (Nesbitt group), and Lindsay Sonderhouse (Ye group) have won coveted 2015 National Science Foundation Graduate Research Fellowships, NSF announced March 31. The five-year Graduate Research Fellowships provide three years of support, with a per-year stipend of $34,000 and cost of education allowance of $12,000. Tuition and... read more -->