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An artistic film strip depicting the process of creating time-of-flight imaging
A Quantum Video Reel

When it comes to creating ever more intriguing quantum systems, a constant need is finding new ways to observe them in a wide range of physical scenarios.  JILA Fellow Cindy Regal and JILA and NIST Fellow Ana Maria…

A rendering of broadband sensing using quantum channels.
Defining the Limits of Quantum Sensing

There are many methods to determine what the limits are for certain processes. Many of these methods look to reach the upper and lower bounds to identify them for making accurate measurements and calculations. In the…

A rendering of the indifferent interactions of p-waves based on their angular momentum
Atoms do the Twist

At ultra-cold temperatures, quantum mechanics dictate how particles bump into each other. The collisions depend both on the quantum statistics of the colliding partners (their location within the medium) and on their…

A rendering of the entangled atoms within the interferometer
An Entangled Matter-wave Interferometer: Now with Double the Spookiness!

JILA and NIST Fellow James K. Thompson’s team of researchers have for the first time successfully combined two of the “spookiest” features of quantum mechanics to make a better quantum sensor:  entanglement between…

Local interactions in the same lattice pull clock frequency negative while interactions between atoms on neighboring lattice sites pull clock frequency positive. By adjusting the atomic confinement, or tightness, of the lattice, researchers can balance these two counteracting forces to increase clock sensitivity.
A Magic Balance in Optical Lattice Clocks

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,…

An artistic rendering of the two planes of the atom's movement, with the real being a 1D lattice and the synthetic referring to the nuclear spin of the atom
Clearing Quantum Traffic Jams under the SU(n) of Symmetric Collisions

Of all the atoms that quantum physicists study, alkaline atoms hold a special place due to their unique structure. Found in the second column of the periodic table, these atoms have two outer electrons, allowing the…

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Major Activities

Latest News

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. 

  

Recent Publications

Coherence of Rabi oscillations with spin exchange
Kiehl C., D. Wagner, T.-W. Hsu, S. Knappe, C.A. Regal, and T. Thiele, Physical Review Research 5, L012002 (2023).
Investigators: Cindy Regal
Time-of-flight quantum tomography of an atom in an optical tweezer
Brown M.O., S.R. Muleady, W. Dworschack, R.J. Lewis-Swan, A.M. Rey, O. Romero-Isart, and C.A. Regal, Nature Physics (2023).
Investigators: Ana Maria Rey | Cindy Regal
Three-dimensional topological magnetic monopoles and their interactions in a ferromagnetic meta-lattice
Rana A., C.-T. Liao, E. Iacocca, J. Zou, M. Pham, X. Lu, E.-E. Subramanian, Y.H. Lo, S. Ryan, C.S. Bevis, and R.M. Karl, Nature Nanotechnology (2023).
Investigators: Henry Kapteyn | Margaret Murnane
High-resolution rovibrational spectroscopy of trans-formic acid in the v1 OH stretching fundamental: Dark state coupling and evidence for charge delocalization dynamics
Chan Y.-C., and D.J. Nesbitt, Journal Of Molecular Spectroscopy 111743 (2023).
Investigators: David Nesbitt
Unitary p-wave interactions between fermions in an optical lattice
Venu V., P. Xu, M. Mamaev, F. Corapi, T. Bilitewski, J.P. D'Incao, C. Fujiwara, A.M. Rey, and J.H. Thywissen, Nature 613, 262–267 (2023).
Investigators: Ana Maria Rey
Modeling and Control of Ultracold Atoms Trapped in an Optical Lattice: An Example-driven Tutorial on Quantum Control
Nicotra M., J. Shao, J. Combes, A. Theurkauf, P. Axelrad, L.-Y. Chih, M.J. Holland, A. Zozulya, C. LeDesma, K. Mehling, and D.Z. Anderson, Ieee Control Systems Magazine 43, 28-43 (2023).
Investigators: Murray Holland | Dana Anderson