A5048337471- Cold Atom Physics and Bose-Einstein Condensates
- Laser-Matter Interactions and Applications
- Spectroscopy and Laser Applications
- Quantum optics and atomic interactions
- Spectroscopy and Quantum Chemical Studies
- Mass Spectrometry Techniques and Applications
- Atomic and Subatomic Physics Research
- Quantum Information and Cryptography
- Radiation Effects in Electronics
- Diamond and Carbon-based Materials Research
- Quantum many-body systems
- Quantum, superfluid, helium dynamics
- Advanced Frequency and Time Standards
- Atomic and Molecular Physics
- Advanced Materials Characterization Techniques
University of Colorado Boulder
2020-2024
National Institute of Standards and Technology
2023-2024
Bryn Mawr College
2017-2020
Understanding molecular state evolution is central to many disciplines, including dynamics, precision measurement, and molecule-based quantum technology. Details of this are obscured when observing a statistical ensemble molecules. Here, we report real-time observations thermal radiation-driven transitions between individual states ("jumps") single molecule. We reversed these jumps through microwave-driven transitions, which resulted in 20-fold improvement the time molecule dwells chosen...
Quantum control of the pathway along which a Rydberg electron field ionizes is experimentally and computationally demonstrated. Selective ionization typically done with slowly rising electric pulse. The ${(1/{n}^{*})}^{4}$ scaling classical threshold leads to rough mapping between arrival time signal principal quantum number electron. This complicated by many avoided level crossings that must traverse on way ionization, in general broadening time-resolved signal. In order pathway, thus...
The electron signals from the field ionization of two closely spaced Rydberg states rubidium-85 are separated using quantum control. In selective ionization, state distribution a collection atoms is measured by ionizing with ramped electric field. Generally, in higher energy ionize at lower fields, so ionized electrons which detected earlier time can be correlated states. However, resolution this technique limited Stark effect. As increased, encounters numerous avoided level crossings split...
Rubidium Rydberg atoms in either |m_{j}| sublevel of the 36p_{3/2} state can exchange energy via Stark-tuned Förster resonances, including two-, three-, and four-body dipole-dipole interactions. Three-body interactions this type were first reported categorized by Faoro et al. [Nat. Commun. 6, 8173 (2015)NCAOBW2041-172310.1038/ncomms9173] their Borromean nature was confirmed Tretyakov [Phys. Rev. Lett. 119, 173402 (2017)PRLTAO0031-900710.1103/PhysRevLett.119.173402]. We report time dependence...
Selective field ionization is used to determine the state or distribution of states which a Rydberg atom excited. By evolving small perturbation ramped electric using genetic algorithm, shape time-resolved signal can be controlled. This allows for separation signals from pairs that would indistinguishable with unperturbed selective ionization. Measurements and calculations are presented demonstrate this technique shed light on how directs pathway electron Pseudocode algorithm provided. Using...
Understanding molecular state evolution is central to many disciplines, including dynamics, precision measurement, and molecule-based quantum technology. Details of the are obscured when observing a statistical ensemble molecules. Here, we reported real-time observations thermal radiation-driven transitions between individual states ("jumps") single molecule. We reversed these "jumps" through microwave-driven transitions, resulting in twentyfold improvement time molecule dwells chosen state....