Stefan Alaric Schäffer

Stefan Alaric Schäffer

Postdoc


  1. 2024
  2. Published

    Collectively enhanced Ramsey readout by cavity sub- to superradiant transition

    Bohr, Eliot, Kristensen, Sofus Laguna, Hotter, C., Schäffer, Stefan Alaric, Robinson-Tait, J. C., Thomsen, Jan Westenkær, Zelevinsky, T., Ritsch, H. & Müller, Jörg Helge, 5 Feb 2024, In: Nature Communications. 15, 7 p., 1084.

    Research output: Contribution to journalJournal articlepeer-review

  3. 2022
  4. Published

    Prospects of a superradiant laser based on a thermal or guided beam of 88Sr

    Tang, M., Schäffer, Stefan Alaric & Müller, Jörg Helge, 9 Dec 2022, In: Physical Review A. 106, 6, 10 p., 063704.

    Research output: Contribution to journalJournal articlepeer-review

  5. 2021
  6. Towards an Active Optical Clock using an Optical Conveyor within a Ring Cavity

    Kazakov, G., Dubey, S., Fama, F., Zhou, Z. S., Beli Silva, C., Schäffer, Stefan Alaric, Bennetts, S. & Schreck, F., 7 Jul 2021, 2021 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, EFTF/IFCS 2021 - Proceedings. Gainesville, Fl, USA: IEEE, Vol. 21403938.

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

  7. Frequency ratio measurements at 18-digit accuracy using an optical clock network

    Boulder Atomic Clock Optical Network (BACON) Collaboration*, B. A. C. O. N. (. C., 25 Mar 2021, In: Nature. 591, 7851, p. 564-569 6 p.

    Research output: Contribution to journalJournal articlepeer-review

  8. 2020
  9. Optical atomic clock comparison through turbulent air

    Bodine, M. I., Deschênes, J. D., Khader, I. H., Swann, W. C., Leopardi, H., Beloy, K., Bothwell, T., Brewer, S. M., Bromley, S. L., Chen, J. S., Diddams, S. A., Fasano, R. J., Fortier, T. M., Hassan, Y. S., Hume, D. B., Kedar, D., Kennedy, C. J., Koepke, A., Leibrandt, D. R., Ludlow, A. D. & 15 others, Mcgrew, W. F., Milner, W. R., Nicolodi, D., Oelker, E., Parker, T. E., Robinson, J. M., Romish, S., Schäffer, Stefan Alaric, Sherman, J. A., Sonderhouse, L., Yao, J., Ye, J., Zhang, X., Newbury, N. R. & Sinclair, L. C., Sep 2020, In: Physical Review Research. 2, 3, 033395.

    Research output: Contribution to journalJournal articlepeer-review

  10. 10-18 optical atomic clock comparisons within the boulder atomic clock network

    Nardelli, N. V., Beloy, K., Bodine, M. I., Bothwell, T., Brewer, S., Bromley, S., Clements, E., Deschenes, J. D., Diddams, S. A., Fasano, R., Fortier, T. M., Hassan, Y., Hume, D. H., Kedar, D., Kennedy, C. J., Khader, I., Koepke, A., Leibrandt, D. R., Leopardi, H., Ludlow, A. & 13 others, McGrew, W. F., Milner, W., Newbury, N., Nicolodi, D., Oelker, E., Parker, T., Robinson, J. M., Schäffer, Stefan Alaric, Sherman, J. A., Sinclair, L. C., Sonderhouse, L., Swann, W. C. & Wineland, D. J., 15 May 2020, In: Cleo. F183, STh3G.3.

    Research output: Contribution to journalConference articlepeer-review

  11. Published

    AEDGE: Atomic Experiment for Dark Matter and Gravity Exploration in Space

    El-Neaj, Y. A., Alpigiani, C., Amairi-Pyka, S., Araujo, H., Balaz, A., Belic, A., Bentine, E., Bernabeu, J., Bingham, R., Bolpasi, V., Bowden, W., Buchmueller, O., Burrage, C., Calmet, X., Canuel, B., Charmandaris, V., Chen, X., Coleman, J., Cotter, J., Cui, Y. & 69 others, Derevianko, A., De Roeck, A., Drougkakis, I., Dutan, I., Elertas, G., Ellis, J., El Sawy, M., Fassi, F., Felea, D., Feng, C., Flack, R., Foot, C., Fuentes, I., Gaaloul, N., Gauguet, A., Geiger, R., Gibson, V., Giudice, G., Goldwin, J., Grachov, O., Graham, P. W., Grasso, D., Van der Grinten, M., Guendogan, M., Haehnelt, M. G., Harte, T., Hees, A., Hobson, R., Hogan, J., Holst, B., Holynski, M., Kasevich, M., Kavanagh, B. J., Von Klitzing, W., Kovachy, T., Krikler, B., Krutzik, M., Lewicki, M., Lien, Y., Liu, M., Luciano, G. G., Pandey, S., Paternostro, M., Penning, B., Peters, A., Prevedelli, M., Puthiya-Veettil, V., Quenby, J., Rasel, E., Roura, A., Sabulsky, D., Sameed, M., Sauer, B., Schäffer, Stefan Alaric, Schiller, S., Schkolnik, V., Schlippert, D., Schubert, C., Sfar, H. R., Shayeghi, A., Soares-Santos, M., Vasilakis, G., Vaskonen, V., Vogt, C., Webber-Date, A., Windpassinger, P., Woltmann, M., Yazgan, E. & Zupan, J., 4 Mar 2020, In: EPJ Quantum Technology. 7, 1, 27 p., 6.

    Research output: Contribution to journalJournal articlepeer-review

  12. Published

    Lasing on a narrow transition in a cold thermal strontium ensemble

    Schäffer, Stefan Alaric, Tang, M., Henriksen, M. R., Jørgensen, Asbjørn Arvad, Christensen, B. T. R. & Thomsen, Jan Westenkær, 17 Jan 2020, In: Physical Review A. 101, 1, 9 p., 013819.

    Research output: Contribution to journalJournal articlepeer-review

  13. 2019
  14. Optical-Clock-Based Time Scale

    Yao, J., Sherman, J. A., Fortier, T., Leopardi, H., Parker, T. E., McGrew, W., Zhang, X., Nicolodi, D., Fasano, R., Schäffer, Stefan Alaric, Beloy, K., Savory, J., Romisch, S., Oates, C., Diddams, S., Ludlow, A. D. & Levine, J., 30 Oct 2019, In: Physical Review Applied. 12, 4, 10 p., 044069.

    Research output: Contribution to journalJournal articlepeer-review

  15. Published

    Towards the optical second: verifying optical clocks at the SI limit

    McGrew, W. F., Zhang, X., Leopardi, H., Fasano, R. J., Nicolodi, D., Beloy, K., Yao, J., Sherman, J. A., Schäffer, Stefan Alaric, Savory, J., Brown, R. C., Romisch, S., Oates, C. W., Parker, T. E., Fortier, T. M. & Ludlow, A. D., 20 Apr 2019, In: Optica. 6, 4, p. 448-454

    Research output: Contribution to journalJournal articlepeer-review

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