Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
  • Editors' Suggestion
  • Open Access

Optical stimulated-Raman sideband spectroscopy of a single Be+9 ion in a Penning trap

Juan M. Cornejo, Johannes Brombacher, Julia A. Coenders, Moritz von Boehn, Teresa Meiners, Malte Niemann, Stefan Ulmer, and Christian Ospelkaus
Phys. Rev. Research 5, 033226 – Published 28 September 2023
PDFHTMLExport Citation
Abstract
Authors
Article Text
  • ACKNOWLEDGMENTS
    • References

    Abstract

    We demonstrate optical sideband spectroscopy of a single Be+9 ion in a cryogenic 5 tesla Penning trap using two-photon stimulated-Raman transitions between the two Zeeman sublevels of the 1s22s ground state manifold. By applying two complementary coupling schemes, we accurately measure Raman resonances with and without contributions from motional sidebands. From the latter we obtain an axial sideband spectrum with an effective mode temperature of (3.1±0.4) mK. These results are a key step for quantum logic operations in Penning traps, applicable to high-precision matter-antimatter comparison tests in the baryonic sector of the standard model.

    • Figure
    • Figure
    • Figure
    • Figure
    • Figure
    • Received 10 July 2023
    • Accepted 22 August 2023

    DOI:https://doi.org/10.1103/PhysRevResearch.5.033226

    Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

    Published by the American Physical Society

    Physics Subject Headings (PhySH)

    1. Research Areas
    Atom & ion coolingCoherent controlLaser spectroscopyPenning trapsQuantum state engineeringQuantum state transferZeeman effect
    1. Physical Systems
    Raman lasersTrapped ions
    Atomic, Molecular & OpticalQuantum Information, Science & TechnologyGravitation, Cosmology & AstrophysicsParticles & Fields

    Authors & Affiliations

    Juan M. Cornejo1,*, Johannes Brombacher1, Julia A. Coenders1, Moritz von Boehn1, Teresa Meiners1, Malte Niemann1, Stefan Ulmer2,3, and Christian Ospelkaus1,4

    • 1Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany
    • 2RIKEN, Ulmer Fundamental Symmetries Laboratory, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
    • 3Institut für Experimentalphysik, Heinrich Heine Universität Düsseldorf, Universitätsstr. 1, 40225 Düsseldorf, Germany
    • 4Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany

    • *cornejo-garcia@iqo.uni-hannover.de

    Article Text

    Click to Expand

    References

    Click to Expand
    Issue

    Vol. 5, Iss. 3 — September - November 2023

    Subject Areas
    Reuse & Permissions
    Author publication services for translation and copyediting assistance advertisement

    Authorization Required

    Log In
    Other Options
    ×

    Images

    • Figure 1
      Figure 1

      (a) Cut view of the main experimental setup, including the 5 T superconducting magnet as well as the ultralow vibration cryocooler. The first and second cryo stages have nominal working temperatures of 40 K and 4 K. The trap can, where the trap system is located, is at the center of the magnet. (b) and (c) Cut views of the Be trap in the co-propagating and crossed-beam laser configurations. Mirrors M1–M4 are used to guide laser beams into the trap.

      Reuse & Permissions
    • Figure 2
      Figure 2

      Simplified energy level scheme of Be+9 at B=5T. Transitions for Doppler cooling and repumping are shown in dark and clear blue. Raman transitions are shown in dark and clear orange for Raman 1 and 2. The circle at the bottom indicates the different sideband transitions due to the interaction of the Raman lasers in crossed-beam configuration with the axial motion (energy levels not to scale).

      Reuse & Permissions
    • Figure 3
      Figure 3

      Blue dots: |S1/22,mj=+1/2〉→|S1/22,mj=−1/2〉 transition probability as a function of Raman laser frequency detuning in the co-propagating configuration. The red line is a Lorentzian fit to the data. Each data point is obtained from 180 individual measurements.

      Reuse & Permissions
    • Figure 4
      Figure 4

      Excitation probability for the |S1/22,mj=+1/2〉→|S1/22,mj=−1/2〉 transition in the co-propagating laser beam configuration as a function of interaction time (30 measurements per data point). The red line is a fit to the data based on an exponentially decaying sinusoid.

      Reuse & Permissions
    • Figure 5
      Figure 5

      Left panel: Resolved-sideband spectrum (transition probability as a function of Raman laser detuning) observed with the crossed-beam configuration. Each sideband was scanned individually, with 100 measurements per data point. Red line: Lorentzian functions with Gaussian envelope fitted to the data. Right panel: Carrier transition probability to illustrate the fit of an individual line.

      Reuse & Permissions
    ×

    Sign up to receive regular email alerts from Physical Review Research

    Reuse & Permissions

    It is not necessary to obtain permission to reuse this article or its components as it is available under the terms of the Creative Commons Attribution 4.0 International license. This license permits unrestricted use, distribution, and reproduction in any medium, provided attribution to the author(s) and the published article's title, journal citation, and DOI are maintained. Please note that some figures may have been included with permission from other third parties. It is your responsibility to obtain the proper permission from the rights holder directly for these figures.

    ×

    Log In

    Cancel
    ×

    Search

    Article Lookup

    Paste a citation or DOI
    Enter a citation
    ×