Details
| Original language | English |
|---|---|
| Article number | 073045 |
| Journal | New journal of physics |
| Volume | 23 |
| Issue number | 7 |
| Publication status | Published - 29 Jul 2021 |
Abstract
Keywords
- CPT symmetry, Penning traps, laser cooling, precision measurements, quantum logic spectroscopy, trapped ions
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: New journal of physics, Vol. 23, No. 7, 073045, 29.07.2021.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Quantum logic inspired techniques for spacetime-symmetry tests with (anti-)protons
AU - Cornejo, Juan M
AU - Lehnert, Ralf
AU - Niemann, Malte
AU - Mielke, Johannes
AU - Meiners, Teresa
AU - Bautista-Salvador, Amado
AU - Schulte, Marius
AU - Nitzschke, Diana
AU - Borchert, Matthias J
AU - Hammerer, Klemens
AU - Ulmer, Stefan
AU - Ospelkaus, Christian
PY - 2021/7/29
Y1 - 2021/7/29
N2 - Cosmological observations as well as theoretical approaches to physics beyond the standard model provide strong motivations for experimental tests of fundamental symmetries, such as CPT invariance. In this context, the availability of cold baryonic antimatter at CERN has opened an avenue for ultrahigh-precision comparisons of protons and antiprotons in Penning traps. This work discusses an experimental method inspired by quantum logic techniques that will improve particle localization and readout speed in such experiments. The method allows for sympathetic cooling of the (anti-)proton to its quantum-mechanical ground state as well as the readout of its spin alignment, replacing the commonly used continuous Stern–Gerlach effect. Both of these features are achieved through coupling to a laser-cooled ‘logic’ ion co-trapped in a double-well potential. This technique will boost the measurement sampling rate and will thus provide results with lower statistical uncertainty, contributing to stringent searches for time dependent variations in the data. Such measurements ultimately yield extremely high sensitivities to CPT violating coefficients acting on baryons in the standard-model extension, will allow the exploration of previously unmeasured types of symmetry violations, and will enable antimatter-based axion-like dark matter searches with improved mass resolution.
AB - Cosmological observations as well as theoretical approaches to physics beyond the standard model provide strong motivations for experimental tests of fundamental symmetries, such as CPT invariance. In this context, the availability of cold baryonic antimatter at CERN has opened an avenue for ultrahigh-precision comparisons of protons and antiprotons in Penning traps. This work discusses an experimental method inspired by quantum logic techniques that will improve particle localization and readout speed in such experiments. The method allows for sympathetic cooling of the (anti-)proton to its quantum-mechanical ground state as well as the readout of its spin alignment, replacing the commonly used continuous Stern–Gerlach effect. Both of these features are achieved through coupling to a laser-cooled ‘logic’ ion co-trapped in a double-well potential. This technique will boost the measurement sampling rate and will thus provide results with lower statistical uncertainty, contributing to stringent searches for time dependent variations in the data. Such measurements ultimately yield extremely high sensitivities to CPT violating coefficients acting on baryons in the standard-model extension, will allow the exploration of previously unmeasured types of symmetry violations, and will enable antimatter-based axion-like dark matter searches with improved mass resolution.
KW - CPT symmetry
KW - Penning traps
KW - laser cooling
KW - precision measurements
KW - quantum logic spectroscopy
KW - trapped ions
UR - http://www.scopus.com/inward/record.url?scp=85112614468&partnerID=8YFLogxK
U2 - 10.1088/1367-2630/ac136e
DO - 10.1088/1367-2630/ac136e
M3 - Article
VL - 23
JO - New journal of physics
JF - New journal of physics
SN - 1367-2630
IS - 7
M1 - 073045
ER -