|
1
|
Mills M, Puri P, Li M, Schowalter SJ, Dunning A, Schneider C, Kotochigova S, Hudson ER. Engineering Excited-State Interactions at Ultracold Temperatures. PHYSICAL REVIEW LETTERS 2019; 122:233401. [PMID: 31298913 DOI: 10.1103/physrevlett.122.233401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Indexed: 06/10/2023]
Abstract
Using a recently developed method for precisely controlling collision energy, we observe a dramatic suppression of inelastic collisions between an atom and ion (Ca+Yb^{+}) at low collision energy. This suppression, which is expected to be a universal phenomenon, arises when the spontaneous emission lifetime of the excited state is comparable to or shorter than the collision complex lifetime. We develop a technique to remove this suppression and engineer excited-state interactions. By dressing the system with a strong catalyst laser, a significant fraction of the collision complexes can be excited at a specified atom-ion separation. This technique allows excited-state collisions to be studied, even at ultracold temperature, and provides a general method for engineering ultracold excited-state interactions.
Collapse
Affiliation(s)
- Michael Mills
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - Prateek Puri
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - Ming Li
- Department of Physics, Temple University, Philadelphia, Pennsylvania 19122, USA
| | - Steven J Schowalter
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - Alexander Dunning
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - Christian Schneider
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | | | - Eric R Hudson
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
- Center for Quantum Science and Engineering, University of California, Los Angeles, California 90095, USA
| |
Collapse
|
|
2
|
Reaction blockading in a reaction between an excited atom and a charged molecule at low collision energy. Nat Chem 2019; 11:615-621. [DOI: 10.1038/s41557-019-0264-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 03/25/2019] [Indexed: 12/15/2022]
|