Details
| Original language | English |
|---|---|
| Pages (from-to) | 514-518 |
| Number of pages | 5 |
| Journal | Nature |
| Volume | 596 |
| Issue number | 7873 |
| Early online date | 25 Aug 2021 |
| Publication status | Published - 26 Aug 2021 |
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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In: Nature, Vol. 596, No. 7873, 26.08.2021, p. 514-518.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Sympathetic cooling of a trapped proton mediated by an LC circuit
AU - BASE Collaboration
AU - Bohman, M.
AU - Grunhofer, V.
AU - Smorra, C.
AU - Wiesinger, M.
AU - Will, C.
AU - Borchert, M. J.
AU - Devlin, J. A.
AU - Erlewein, S.
AU - Fleck, M.
AU - Gavranovic, S.
AU - Harrington, J.
AU - Latacz, B.
AU - Mooser, A.
AU - Popper, D.
AU - Wursten, E.
AU - Blaum, K.
AU - Matsuda, Y.
AU - Ospelkaus, Christian
AU - Quint, W.
AU - Walz, J.
AU - Ulmer, S.
N1 - Funding Information: Acknowledgements This study comprises parts of the PhD thesis work of M.B. We acknowledge the contributions of G. L. Schneider and N. Schön to the design and construction of the Penning-trap system. We thank S. Sturm for helpful discussions regarding the cooling method presented here and acknowledge similar developments toward cooling highly charged ions in the ALPHATRAP collaboration. We acknowledge financial support from the RIKEN Chief Scientist Program, RIKEN Pioneering Project Funding, the RIKEN JRA Program, the Max-Planck Society, the Helmholtz-Gemeinschaft, the DFG through SFB 1227 ‘DQ-mat’, the European Union (Marie Skłodowska-Curie grant agreement number 721559), the European Research Council under the European Union’s Horizon 2020 research and innovation programme (Grant agreement numbers 832848-FunI and 852818-STEP) and the Max-Planck-RIKEN-PTB Center for Time, Constants and Fundamental Symmetries.
PY - 2021/8/26
Y1 - 2021/8/26
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85114970025&partnerID=8YFLogxK
U2 - 10.1038/s41586-021-03784-w
DO - 10.1038/s41586-021-03784-w
M3 - Article
C2 - 34433946
AN - SCOPUS:85114970025
VL - 596
SP - 514
EP - 518
JO - Nature
JF - Nature
SN - 0028-0836
IS - 7873
ER -