Title: Additional data for the publication “Experimental determination of the E2-M1 polarizability of the strontium clock transition”
Authors: Dörscher, Sören, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 4.3. Quantenoptik und Längeneinheit, ORCID: 0000-0002-3331-4001
Klose, Joshua, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 4.3. Quantenoptik und Längeneinheit, ORCID: 0000-0001-7119-7283
Maratha Palli, Sarath, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 4.3. Quantenoptik und Längeneinheit, ORCID: 0000-0002-5927-4167
Lisdat, Christian, Physikalisch-Technische Bundesanstalt (PTB), Fachbereich 4.3. Quantenoptik und Längeneinheit, ORCID: 0000-0002-4705-8854
Contributors: HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887
Language:en
DOI:10.7795/720.20221026
Resource Type: Dataset / Measurement Data
Publisher: Physikalisch-Technische Bundesanstalt (PTB)
Rights: https://creativecommons.org/licenses/by/4.0/
CC-BY 4.0 International
Relationships: IsReferencedBy: DOI {{MANUSCRIPT-DOI}}
References: DOI {{MANUSCRIPT-DOI}}
References: DOI 10.1103/PhysRevLett.121.263202
References: DOI 10.1103/PhysRevLett.120.063204
References: DOI 10.1103/PhysRevLett.119.253001
References: DOI 10.1103/PhysRevA.101.053416
Dates: Available: 2022-10-26
Classifications: INSPEC A3000 Atomic and molecular physics ; INSPEC A3200 Atomic spectra and interactions with photons ; INSPEC A3280P Optical cooling of atoms; trapping ; INSPEC A4262 Laser applications
File: Download File (application/zip) 56.00 kB (57339 Bytes)
MD5 Checksum: 4f0b548deb6db218b0cb3bc96465abe4
SHA256 Checksum: 6905ed041bee92fcef40a51f8c04d88ded69ad3f1c710491045f5d20d8006dd6
Keywords: Atomic clocks ; Strontium lattice clock ; Lattice light shift ; Polarisability (Polarizability) ; Electric quadrupole ; Magnetic dipole
Abstract: The data sets provide additional information on the manuscript including data shown in graphs.
Other: We acknowledge support by the project 20FUN01 TSCAC, which has received funding from the EMPIR programme co-financed by the Participating States and from the European Union's Horizon 2020 Research and Innovation Programme, and by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy - EXC-2123 QuantumFrontiers - Project-ID 390837967, SFB 1464 TerraQ - Project-ID 434617780 - within project A04, and SFB 1227 DQ-mat - Project-ID 274200144 - within project B02. This work was partially supported by the Max Planck-RIKEN-PTB Center for Time, Constants and Fundamental Symmetries.
Remark:

Description of the individual files:



  • light_shifts.csv (text/csv) - Lattice light shift estimates for different conditions


    This file summarizes the light shift estimates shown in Figure 1 of Dörscher et al. (2022).
    These are estimates of the frequency shift of the 429 THz transition in neutral strontium caused by the optical lattice potential via the ac-Stark effect.
    They have been computed for different experimental conditions, light shift models, and values of the E2-M1 differential polarizability, see Dörscher et al. (2022) for further details.



    • Column 1 - Specifies which value is used for the E2-M1 differential polarizability. Either of:

    • Column 2 - Specifies with light shift model is used. Either of:

    • Column 3 - Specifies which population distribution is used. Either of "hot" or "cold", see Dörscher et al. (2022) for details.

    • Column 4 - Estimated light shift (in units of the transition frequency)

    • Column 5 - Standard uncertainty of the estimate (in units of the transition frequency)


      Columns are separated by semicolons.
      The file contains one header line (labels).





  • measurement_e2m1.dat (text/csv) - Measurement results for the differential light shift between hot & cold atoms


    This file contains the light shift differences measured between 'cold' and 'hot' atomic samples, as described in Dörscher et al. (2022).
    The data set is a series of instantaneous frequency differences of the interleaved stabilization loops (hot - cold).
    Each line corresponds to one iteration of both loops, with a period of about 13.9 s.
    Frequency values are given in units of the transition frequency.
    Any interruptions have been removed from the data set.


    The total Allan deviation shown in Fig. 2 of Dörscher et al. (2022) has been computed from this data set.



  • measurement_ref.dat (text/csv) - Measurement results for the differential light shift between deep & shallow lattices


    This file contains the light shift differences measured between a deep and a shallow trap, as described in Dörscher et al. (2022).
    The data set is a series of instantaneous frequency differences of the interleaved stabilization loops (deep - shallow).
    Each line corresponds to one iteration of both loops, with a period of about 13.9 s.
    Frequency values are given in units of the transition frequency.
    Any interruptions have been removed from the data set.



  • sideband_cold.dat (text/csv) - Measurement of the sideband spectrum of 'cold' atoms


    This file contains a measurement of the sideband spectrum on the clock transition using 'cold' atoms as described in Dörscher et al. (2022).



    • Column 1 - Frequency offset (in Hz) of the interrogation laser, given with respect to the carrier

    • Column 2 - Population fraction in the excited state, measured by balanced fluorescence detection


      Columns are separated by semicolons.
      The file contains two header lines (labels & units).





  • sideband_hot.dat (text/csv) - Measurement of the sideband spectrum of 'hot' atoms


    This file contains a measurement of the sideband spectrum on the clock transition using 'hot' atoms as described in Dörscher et al. (2022).



    • Column 1 - Frequency offset (in Hz) of the interrogation laser, given with respect to the carrier

    • Column 2 - Population fraction in the excited state, measured by balanced fluorescence detection


      Columns are separated by semicolons.
      The file contains two header lines (labels & units).





Funding: European Commission (EC), ISNI: 0000 0001 2162 673X, Grant Title: Two-Species Composite Atomic Clocks, Grant Number: EMPIR 20FUN01 TSCAC
Deutsche Forschungsgemeinschaft (DFG), ISNI: 0000 0001 2096 9829, Grant Title: QuantumFrontiers - Licht und Materie an der Quantengrenze, Grant Number: EXC-2123 (Project-ID 390837967)
Deutsche Forschungsgemeinschaft (DFG), Grant Title: TerraQ - Project A04: Optical Clocks for Chronometric Levelling, Grant Number: SFB 1464 (Project-ID 434617780)
Deutsche Forschungsgemeinschaft (DFG), Grant Title: DQ-mat - Project B02: Optical clocks testing fundamental physics, Grant Number: SFB 1227 (Project-ID 274200144)
Max Planck-RIKEN-PTB Center for Time, Constants and Fundamental Symmetries