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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…

Long-lived entangelement of Bell state pairs compared to single unentangled atoms in a 3D optical lattice. The Bell state "stopwatch" ticks twice as fast than that of a single atom, holding the promise of higher stability and higher bandwidth for optical clocks.
Seeing Quantum Weirdness: Superposition, Entanglement, and Tunneling

Quantum science promises a range of technological breakthroughs, such as quantum computers that can help discover new pharmaceuticals or quantum sensors for navigation. These capabilities rest on two unusual…

The cover of ACS Photonics, featuring a rendering of the experiment
Creating A Two-Step Dance for Lasers

Lasers have not only fascinated scientists for decades, but they have also become an integral part of many electronic devices. To create scientific-grade lasers, physicists try to control the temporal, spatial, phase…

Graphical illustration of light focusing using a planar glass surface studded with millions of nanopillars (referred to as a metalens) forming an optical tweezer. (A) Device cross section depicts plane waves of light that come to a focus through secondary wavelets generated by nanopillars of varying size. (B) The same metalens is used to trap and image single rubidium atoms.
JILA and NIST Researchers Develop Miniature Lens for Trapping Atoms

JILA Fellow Cindy Regal and her team, along with researchers at the National Institute of Standards and Technology (NIST), have for the first time demonstrated that they can trap single atoms using a novel…

The transducer developed by the Lehnert and Regal research groups uses side-banded cooling to convert microwave photons to optical photons
Connecting Microwave and Optical Frequencies through the Ground State of a Micromechanical Object

The process of developing a quantum computer has seen significant progress in the past 20 years. Quantum computers are designed to solve complex problems using the intricacies of quantum mechanics. These computers…

An illustration of the efficient and continuously operating electro-optomechanical transducer whose mechanical mode has been optically sideband-cooled to its quantum ground state. This is the tool that will be used to convert microwave photons into optical photons to eventually send quantum signals over long distances.
New Research Reveals A More Robust Qubit System, even with a Stronger Laser Light

Qubits are a basic building block for quantum computers, but they’re also notoriously fragile—tricky to observe without erasing their information in the process. Now, new research from CU Boulder and the National…

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Major Activities

Latest News

Boulder, Colo. — Physicist Adam Kaufman of both JILA and the U.S. Department of Commerce’s National Institute of Standards and Technology (NIST) has been awarded the 2023 New Horizons in Physics Prize from the Breakthrough Prize Foundation for his work in advancing the control of atoms and molecules to improve atomic clocks and quantum information processing. 


Recent Publications

Ligand-Dependent Volumetric Characterization of Manganese Riboswitch Folding: A High-Pressure Single-Molecule Kinetic Study
Sung H.-L., and D. Nesbitt, Journal Of Physical Chemistry B (2023).
Ytterbium Nuclear-Spin Qubits in an Optical Tweezer Array
Jenkins A., J. Lis, A. Senoo, W.F. McGrew, and A.M. Kaufman, Physical Review X 12, 021027 (2022).
Investigators: Adam Kaufman
Structural and Elastic Properties of Empty-Pore Metalattices Extracted via Nondestructive Coherent Extreme UV Scatterometry and Electron Tomography
Knobloch J.L., B. McBennett, C.S. Bevis, S. Yazdi, T. Frazer, A. Adak, E. Nelson, J. Hernández-Charpak, H. Cheng, A. Grede, and P. Mahale, Acs Applied Materials & Interfaces TBD, (2022).
Investigators: Henry Kapteyn | Margaret Murnane
Long-lived Bell states in an array of optical clock qubits
Schine N., A. Young, W. Eckner, M.C. Martin, and A.M. Kaufman, Nature Physics (2022).
Investigators: Adam Kaufman
Lindblad master equations for quantum systems coupled to dissipative bosonic modes
Jäger S.B., T. Schmit, G. Morigi, M.J. Holland, and R. Betzholz, Physical Review Letters 129, 063601 (2022).
Investigators: Murray Holland
Synergism in the Molecular Crowding of Ligand-Induced Riboswitch Folding: Kinetic/Thermodynamic Insights from Single-Molecule Spectroscopy
Sung H.-L., and D.J. Nesbitt, The Journal Of Physical Chemistry B (2022).
Investigators: David Nesbitt