Quantum logic inspired techniques for spacetime-symmetry tests with (anti-)protons

verfasst von: Juan M Cornejo, Ralf Lehnert, Malte Niemann, Johannes Mielke, Teresa Meiners, Amado Bautista-Salvador, Marius Schulte, Diana Nitzschke, Matthias J Borchert, Klemens Hammerer, Stefan Ulmer, Christian Ospelkaus
Abstract: 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.
Organisationseinheit(en): Institut für Quantenoptik
Laboratorium für Nano- und Quantenengineering
Institut für Theoretische Physik
SFB 1227: Designte Quantenzustände der Materie (DQ-mat)
Externe Organisation(en): Indiana University Bloomington
Physikalisch-Technische Bundesanstalt (PTB)
Ulmer Fundamental Symmetries Laboratory
Typ: Artikel
Journal: New journal of physics
Band: 23
ISSN: 1367-2630
Publikationsdatum: 29.07.2021
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Physik und Astronomie (insg.)
Elektronische Version(en): https://arxiv.org/abs/2106.06252 (Zugang: Offen)
https://doi.org/10.1088/1367-2630/ac136e (Zugang: Offen)

BibTeX

@article{0461470de6a141018ab4bb6e9480bbd0,
title = "Quantum logic inspired techniques for spacetime-symmetry tests with (anti-)protons",
abstract = "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 {\textquoteleft}logic{\textquoteright} 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.",
keywords = "CPT symmetry, Penning traps, laser cooling, precision measurements, quantum logic spectroscopy, trapped ions",
author = "Cornejo, {Juan M} and Ralf Lehnert and Malte Niemann and Johannes Mielke and Teresa Meiners and Amado Bautista-Salvador and Marius Schulte and Diana Nitzschke and Borchert, {Matthias J} and Klemens Hammerer and Stefan Ulmer and Christian Ospelkaus",
year = "2021",
month = jul,
day = "29",
doi = "10.1088/1367-2630/ac136e",
language = "English",
volume = "23",
journal = "New journal of physics",
issn = "1367-2630",
publisher = "IOP Publishing Ltd.",
number = "7",
}