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Bohman M, Grunhofer V, Smorra C, Wiesinger M, Will C, Borchert MJ, Devlin JA, Erlewein S, Fleck M, Gavranovic S, Harrington J, Latacz B, Mooser A, Popper D, Wursten E, Blaum K, Matsuda Y, Ospelkaus C, Quint W, Walz J, Ulmer S. Sympathetic cooling of a trapped proton mediated by an LC circuit. Nature 2021; 596:514-518. [PMID: 34433946 PMCID: PMC8387233 DOI: 10.1038/s41586-021-03784-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Accepted: 06/29/2021] [Indexed: 02/07/2023]
Abstract
Efficient cooling of trapped charged particles is essential to many fundamental physics experiments1,2, to high-precision metrology3,4 and to quantum technology5,6. Until now, sympathetic cooling has required close-range Coulomb interactions7,8, but there has been a sustained desire to bring laser-cooling techniques to particles in macroscopically separated traps5,9,10, extending quantum control techniques to previously inaccessible particles such as highly charged ions, molecular ions and antimatter. Here we demonstrate sympathetic cooling of a single proton using laser-cooled Be+ ions in spatially separated Penning traps. The traps are connected by a superconducting LC circuit that enables energy exchange over a distance of 9 cm. We also demonstrate the cooling of a resonant mode of a macroscopic LC circuit with laser-cooled ions and sympathetic cooling of an individually trapped proton, reaching temperatures far below the environmental temperature. Notably, as this technique uses only image-current interactions, it can be easily applied to an experiment with antiprotons1, facilitating improved precision in matter-antimatter comparisons11 and dark matter searches12,13.
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Affiliation(s)
- M Bohman
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany.
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan.
| | - V Grunhofer
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - C Smorra
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - M Wiesinger
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
| | - C Will
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M J Borchert
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
- Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany
- Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
| | - J A Devlin
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
- CERN, Geneva, Switzerland
| | - S Erlewein
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
- CERN, Geneva, Switzerland
| | - M Fleck
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
- Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
| | - S Gavranovic
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - J Harrington
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
| | - B Latacz
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
| | - A Mooser
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - D Popper
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
| | - E Wursten
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
- CERN, Geneva, Switzerland
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - Y Matsuda
- Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
| | - C Ospelkaus
- Institut für Quantenoptik, Leibniz Universität Hannover, Hannover, Germany
- Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
| | - W Quint
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
| | - J Walz
- Institut für Physik, Johannes Gutenberg-Universität, Mainz, Germany
- Helmholtz-Institut Mainz, Mainz, Germany
| | - S Ulmer
- RIKEN, Fundamental Symmetries Laboratory, Saitama, Japan
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Jin B, Zhou H, Zong Z, Zhang X, Wang G, Zhou L, Chen X. Negative ion formation by neutral hydrogen atom grazing scattering from a LiF(100) surface. RSC Adv 2021; 11:4489-4498. [PMID: 35424408 PMCID: PMC8694513 DOI: 10.1039/d0ra08486g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 12/27/2020] [Indexed: 11/21/2022] Open
Abstract
H− conversion during H0 grazing scattering on a LiF(100) surface, includes H− affinity electron loss to a surface image state.
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Affiliation(s)
- Bo Jin
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou 730000
- China
| | - Hu Zhou
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou 730000
- China
- College of Chemistry and Chemical Engineering
| | - Zewen Zong
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou 730000
- China
| | - Xin Zhang
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou 730000
- China
| | - Guangyi Wang
- School of Electronic and Information Engineering
- Lanzhou City University
- Lanzhou 730000
- China
| | - Lihua Zhou
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou 730000
- China
| | - Ximeng Chen
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou 730000
- China
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