Stefan Alaric Schäffer

Stefan Alaric Schäffer

Postdoc

ORCID: 0000-0002-5296-0332

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  1. 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 journal › Conference article › Research › peer-review

  2. 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 journal › Journal article › Research › peer-review

  3. 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 journal › Journal article › Research › peer-review

  4. 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 proceeding › Article in proceedings › Research › peer-review

  5. 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 proceeding › Article in proceedings › Research › peer-review

  6. 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 journal › Journal article › Research › peer-review

  7. Published

    Laser stabilization on velocity dependent nonlinear dispersion of Sr atoms in an optical cavity: In Frequency Control Symposium & the European Frequency and Time Forum

    Christensen, B. T. R., Schäffer, Stefan Alaric, Henriksen, M. R., Westergaard, P. G., Ye, J. & Thomsen, Jan Westenkær, 10 Apr 2015, In: Proceedings of the IEEE. p. 357-362

    Research output: Contribution to journal › Conference article › Research › peer-review

  8. Published

    Nonlinear spectroscopy of Sr atoms in an optical cavity for laser stabilization

    Christensen, B. T. R., Henriksen, M. R., Schäffer, Stefan Alaric, Westergaard, P. G., Ye, J., Holland, M. & Thomsen, Jan Westenkær, 6 Nov 2015, In: Physical Review A (Atomic, Molecular and Optical Physics). 92, 053820.

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. Published

    Collectively enhanced Ramsey readout by cavity sub- to superradiant transition

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

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. 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 journal › Journal article › Research › peer-review

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