Stefan Alaric Schäffer

Stefan Alaric Schäffer

Postdoc


Publication year:
  1. 2020
  2. 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., 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 articleResearchpeer-review

  3. Published

    Lasing on a narrow transition in a cold thermal strontium ensemble

    Schäffer, Stefan Alaric, Tang, Mikkel, 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 articleResearchpeer-review

  4. 2019
  5. 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 articleResearchpeer-review

  6. Published

    Cavity-enhanced optical clocks

    Schäffer, Stefan Alaric, 2019, Niels Bohr Institute, Faculty of Science, University of Copenhagen.

    Research output: Book/ReportPh.D. thesisResearch

  7. 2018
  8. Published

    Atomic clock performance enabling geodesy below the centimetre level

    McGrew, W. F., Zhang, X., Fasano, R. J., Schäffer, Stefan Alaric, Beloy, K., Nicolodi, D., Brown, R. C., Hinkley, N., Milani, G., Schioppo, M., Yoon, T. H. & Ludlow, A. D., 6 Dec 2018, In : Nature. 564, 7734, p. 87-90

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    Det aktive atomur - en laser i sin reneste form

    Tang, Mikkel & Schäffer, Stefan Alaric, 1 Dec 2018, In : Kvant. 4, p. 20-23

    Research output: Contribution to journalJournal articleCommunication

  10. Published

    Progress on optical- clock-based time scale at NIST: Simulations and preliminary real-data analysis

    Yao, J., Sherman, J., Fortier, T., Leopardi, H., Parker, T., Levine, J., Savory, J., Romisch, S., McGrew, W., Zhang, X., Nicolodi, D., Fasano, R., Schäffer, Stefan Alaric, Beloy, K. & Ludlow, A., 19 Sep 2018, In : Navigation. 248, p. 1-8

    Research output: Contribution to journalConference articleResearchpeer-review

  11. Published

    Optical frequency measurements at 1x10(-18) uncertainty with ytterbium optical lattice clocks

    Ludlow, A. D., McGrew, W. F., Zhang, X., Nicolodi, D., Fasano, R. J., Schäffer, Stefan Alaric, Brown, R. C., Fox, R. W., Hinkley, N., Yoon, T. H. & Beloy, K., 8 Jul 2018, 2018 Conference on Precision Electromagnetic Measurements (CPEM). Paris, France: IEEE

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedings

  12. Published

    Faraday-Shielded dc Stark-Shift-Free Optical Lattice Clock

    Beloy, K., Zhang, X., McGrew, W. F., Hinkley, N., Yoon, T. H., Nicolodi, D., Fasano, R. J., Schäffer, Stefan Alaric, Brown, R. C. & Ludlow, A. D., 2 May 2018, In : Physical Review Letters. 120, 18, 5 p., 183201.

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    Incorporating an Optical Clock into a Time Scale at NIST: Simulations and Preliminary Real-Data Analysis

    Sherman, J., Fortier, T., Yao, J., Parker, J., Levine, T., Savory, J., Romisch, S., McGrew, W., Zhang, X., Nicolodi, D., Fasano, R., Schäffer, Stefan Alaric, Beloy, K. & Ludlow, A., 29 Jan 2018, Proceedings of the 49th Annual Precise Time and Time Interval Systems and Applications Meeting. Reston, Virginia : Wiley, p. 11-21

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedings

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