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Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen

Christopher Baker Orcid Logo, W. Bertsche, A. Capra Orcid Logo, C. Carruth, C. L. Cesar Orcid Logo, Michael Charlton, A. Christensen, R. Collister, April Cridland Orcid Logo, Stefan Eriksson Orcid Logo, A. Evans, N. Evetts, J. Fajans Orcid Logo, T. Friesen, M. C. Fujiwara, D. R. Gill, P. Grandemange Orcid Logo, P. Granum Orcid Logo, J. S. Hangst Orcid Logo, W. N. Hardy, M. E. Hayden, D. Hodgkinson Orcid Logo, E. Hunter Orcid Logo, Aled Isaac Orcid Logo, M. A. Johnson, Jack Jones, S. A. Jones Orcid Logo, S. Jonsell Orcid Logo, A. Khramov, L. Kurchaninov, Niels Madsen Orcid Logo, Daniel Maxwell Orcid Logo, J. T. K. McKenna, S. Menary, T. Momose, Patrick Mullan, J. J. Munich, K. Olchanski, A. Olin Orcid Logo, JOANNA PESZKA, A. Powell Orcid Logo, P. Pusa, C. Ø. Rasmussen Orcid Logo, F. Robicheaux Orcid Logo, R. L. Sacramento, M. Sameed Orcid Logo, E. Sarid, D. M. Silveira, C. So, G. Stutter Orcid Logo, T. D. Tharp, R. I. Thompson, Dirk van der Werf Orcid Logo, J. S. Wurtele Orcid Logo, Graham Shore

Nature Physics, Volume: 21, Issue: 2, Pages: 201 - 207

Swansea University Authors: Christopher Baker Orcid Logo, Michael Charlton, April Cridland Orcid Logo, Stefan Eriksson Orcid Logo, Aled Isaac Orcid Logo, Jack Jones, Niels Madsen Orcid Logo, Daniel Maxwell Orcid Logo, Patrick Mullan, JOANNA PESZKA, Dirk van der Werf Orcid Logo, Graham Shore

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DOI (Published version): 10.1038/s41567-024-02712-9

Abstract

The antimatter equivalent of atomic hydrogen—antihydrogen—is an outstanding testbed for precision studies of matter–antimatter symmetry. Here we report on the simultaneous observation of both accessible hyperfine components of the 1S–2S transition in trapped antihydrogen. We determine the 2S hyperfi...

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ISSN: 1745-2473 1745-2481
Published: Springer Science and Business Media LLC 2025
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spelling 2025-02-26T16:34:31.0935712 v2 68708 2025-01-17 Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen 0c72afb63bd0c6089fc5b60bd096103e 0000-0002-9448-8419 Christopher Baker Christopher Baker true false d9099cdd0f182eb9a1c8fc36ed94f53f Michael Charlton Michael Charlton true false e3c734cfda1e0b3835968762f39525cc 0000-0003-4361-0266 April Cridland April Cridland true false 785cbd474febb1bfa9c0e14abaf9c4a8 0000-0002-5390-1879 Stefan Eriksson Stefan Eriksson true false 06d7ed42719ef7bb697cf780c63e26f0 0000-0002-7813-1903 Aled Isaac Aled Isaac true false a1fd0a804e977beb3835bad353db5f72 Jack Jones Jack Jones true false e348e4d768ee19c1d0c68ce3a66d6303 0000-0002-7372-0784 Niels Madsen Niels Madsen true false e8ebdf12e608884a8d4ea4af35b89b46 0000-0001-5178-9492 Daniel Maxwell Daniel Maxwell true false d5167e8661859aff63e7984b1a421667 Patrick Mullan Patrick Mullan true false d11388181f4f4559514f02e9212c6ca1 JOANNA PESZKA JOANNA PESZKA true false 4a4149ebce588e432f310f4ab44dd82a 0000-0001-5436-5214 Dirk van der Werf Dirk van der Werf true false 28a24f55687c82d6f3ee378ead3cf234 Graham Shore Graham Shore true false 2025-01-17 EAAS The antimatter equivalent of atomic hydrogen—antihydrogen—is an outstanding testbed for precision studies of matter–antimatter symmetry. Here we report on the simultaneous observation of both accessible hyperfine components of the 1S–2S transition in trapped antihydrogen. We determine the 2S hyperfine splitting in antihydrogen and—by comparing our results with those obtained in hydrogen—constrain the charge–parity–time-reversal symmetry-violating coefficients in the standard model extension framework. Our experimental protocol allows the characterization of the relevant spectral lines in 1 day, representing a 70-fold improvement in the data-taking rate. We show that the spectroscopy is applicable to laser-cooled antihydrogen with important implications for future tests of fundamental symmetries. Journal Article Nature Physics 21 2 201 207 Springer Science and Business Media LLC 1745-2473 1745-2481 1 2 2025 2025-02-01 10.1038/s41567-024-02712-9 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University Another institution paid the OA fee This work was supported by the European Research Council through its Advanced Grant programme (JSH); CNPq, FAPERJ, RENAFAE (Brazil); NSERC, CFI, NRC/TRIUMF, EHPDS/EHDRS (Canada); FNU (NICE Centre), Carlsberg Foundation (Denmark); ISF (Israel); STFC, EPSRC, the Royal Society and the Leverhulme Trust (UK); DOE, NSF (USA); and VR (Sweden). 2025-02-26T16:34:31.0935712 2025-01-17T13:49:33.5128080 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Christopher Baker 0000-0002-9448-8419 1 W. Bertsche 2 A. Capra 0000-0001-9499-0380 3 C. Carruth 4 C. L. Cesar 0000-0003-2638-0032 5 Michael Charlton 6 A. Christensen 7 R. Collister 8 April Cridland 0000-0003-4361-0266 9 Stefan Eriksson 0000-0002-5390-1879 10 A. Evans 11 N. Evetts 12 J. Fajans 0000-0002-4403-6027 13 T. Friesen 14 M. C. Fujiwara 15 D. R. Gill 16 P. Grandemange 0000-0002-5550-1529 17 P. Granum 0000-0002-2710-266x 18 J. S. Hangst 0000-0001-5288-2330 19 W. N. Hardy 20 M. E. Hayden 21 D. Hodgkinson 0000-0003-3410-5540 22 E. Hunter 0000-0002-3624-2840 23 Aled Isaac 0000-0002-7813-1903 24 M. A. Johnson 25 Jack Jones 26 S. A. Jones 0000-0001-8205-2186 27 S. Jonsell 0000-0003-4969-1714 28 A. Khramov 29 L. Kurchaninov 30 Niels Madsen 0000-0002-7372-0784 31 Daniel Maxwell 0000-0001-5178-9492 32 J. T. K. McKenna 33 S. Menary 34 T. Momose 35 Patrick Mullan 36 J. J. Munich 37 K. Olchanski 38 A. Olin 0000-0001-8055-7180 39 JOANNA PESZKA 40 A. Powell 0000-0003-2475-6067 41 P. Pusa 42 C. Ø. Rasmussen 0000-0002-6029-1730 43 F. Robicheaux 0000-0002-8054-6040 44 R. L. Sacramento 45 M. Sameed 0000-0002-9706-8970 46 E. Sarid 47 D. M. Silveira 48 C. So 49 G. Stutter 0000-0002-1629-7588 50 T. D. Tharp 51 R. I. Thompson 52 Dirk van der Werf 0000-0001-5436-5214 53 J. S. Wurtele 0000-0001-8401-0297 54 Graham Shore 55 68708__33687__6d7e6eae69424f108156fd39347d6dff.pdf 68708.VoR.pdf 2025-02-26T16:31:38.0676946 Output 1720103 application/pdf Version of Record true This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen
spellingShingle Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen
Christopher Baker
Michael Charlton
April Cridland
Stefan Eriksson
Aled Isaac
Jack Jones
Niels Madsen
Daniel Maxwell
Patrick Mullan
JOANNA PESZKA
Dirk van der Werf
Graham Shore
title_short Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen
title_full Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen
title_fullStr Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen
title_full_unstemmed Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen
title_sort Precision spectroscopy of the hyperfine components of the 1S–2S transition in antihydrogen
author_id_str_mv 0c72afb63bd0c6089fc5b60bd096103e
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author_id_fullname_str_mv 0c72afb63bd0c6089fc5b60bd096103e_***_Christopher Baker
d9099cdd0f182eb9a1c8fc36ed94f53f_***_Michael Charlton
e3c734cfda1e0b3835968762f39525cc_***_April Cridland
785cbd474febb1bfa9c0e14abaf9c4a8_***_Stefan Eriksson
06d7ed42719ef7bb697cf780c63e26f0_***_Aled Isaac
a1fd0a804e977beb3835bad353db5f72_***_Jack Jones
e348e4d768ee19c1d0c68ce3a66d6303_***_Niels Madsen
e8ebdf12e608884a8d4ea4af35b89b46_***_Daniel Maxwell
d5167e8661859aff63e7984b1a421667_***_Patrick Mullan
d11388181f4f4559514f02e9212c6ca1_***_JOANNA PESZKA
4a4149ebce588e432f310f4ab44dd82a_***_Dirk van der Werf
28a24f55687c82d6f3ee378ead3cf234_***_Graham Shore
author Christopher Baker
Michael Charlton
April Cridland
Stefan Eriksson
Aled Isaac
Jack Jones
Niels Madsen
Daniel Maxwell
Patrick Mullan
JOANNA PESZKA
Dirk van der Werf
Graham Shore
author2 Christopher Baker
W. Bertsche
A. Capra
C. Carruth
C. L. Cesar
Michael Charlton
A. Christensen
R. Collister
April Cridland
Stefan Eriksson
A. Evans
N. Evetts
J. Fajans
T. Friesen
M. C. Fujiwara
D. R. Gill
P. Grandemange
P. Granum
J. S. Hangst
W. N. Hardy
M. E. Hayden
D. Hodgkinson
E. Hunter
Aled Isaac
M. A. Johnson
Jack Jones
S. A. Jones
S. Jonsell
A. Khramov
L. Kurchaninov
Niels Madsen
Daniel Maxwell
J. T. K. McKenna
S. Menary
T. Momose
Patrick Mullan
J. J. Munich
K. Olchanski
A. Olin
JOANNA PESZKA
A. Powell
P. Pusa
C. Ø. Rasmussen
F. Robicheaux
R. L. Sacramento
M. Sameed
E. Sarid
D. M. Silveira
C. So
G. Stutter
T. D. Tharp
R. I. Thompson
Dirk van der Werf
J. S. Wurtele
Graham Shore
format Journal article
container_title Nature Physics
container_volume 21
container_issue 2
container_start_page 201
publishDate 2025
institution Swansea University
issn 1745-2473
1745-2481
doi_str_mv 10.1038/s41567-024-02712-9
publisher Springer Science and Business Media LLC
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 1
active_str 0
description The antimatter equivalent of atomic hydrogen—antihydrogen—is an outstanding testbed for precision studies of matter–antimatter symmetry. Here we report on the simultaneous observation of both accessible hyperfine components of the 1S–2S transition in trapped antihydrogen. We determine the 2S hyperfine splitting in antihydrogen and—by comparing our results with those obtained in hydrogen—constrain the charge–parity–time-reversal symmetry-violating coefficients in the standard model extension framework. Our experimental protocol allows the characterization of the relevant spectral lines in 1 day, representing a 70-fold improvement in the data-taking rate. We show that the spectroscopy is applicable to laser-cooled antihydrogen with important implications for future tests of fundamental symmetries.
published_date 2025-02-01T08:15:39Z
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score 11.056659

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