Personal profile

External positions

DNRF Postdoctoral fellow, Universiteit van Amsterdam, Amsterdam, the Netherlands

1 Sept 202031 Oct 2022

Guest researcher, National Institute of Standards and Technology (NIST)

1 Jul 201731 Jan 2018

Collaborations and top research areas from the last five years

Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
  • Lasing on a narrow transition in a cold thermal strontium ensemble

    Schäffer, S. A., Tang, M., Henriksen, M. R., Jørgensen, A. A., Christensen, B. T. R. & Thomsen, J. W., 17 Jan 2020, In: Physical Review A. 101, 1, 9 p., 013819.

    Research output: Contribution to journalJournal articleResearchpeer-review

    Open Access
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    48 Citations (Scopus)
    45 Downloads (Pure)
  • Collectively enhanced Ramsey readout by cavity sub- to superradiant transition

    Bohr, E., Kristensen, S. L., Hotter, C., Schäffer, S. A., Robinson-Tait, J. C., Thomsen, J. W., Zelevinsky, T., Ritsch, H. & Müller, J. H., 5 Feb 2024, In: Nature Communications. 15, 7 p., 1084.

    Research output: Contribution to journalJournal articleResearchpeer-review

    Open Access
    File
    5 Citations (Scopus)
    62 Downloads (Pure)
  • Atomic clock performance enabling geodesy below the centimetre level

    McGrew, W. F., Zhang, X., Fasano, R. J., Schaffer, S. A., 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

    566 Citations (Scopus)
  • Modeling of a continuous superradiant laser on the sub-mHz 1S0 → 3P0 transition in neutral strontium-88

    Dubey, S., Kazakov, G. A., Heizenreder, B., Zhou, S., Bennetts, S., Schäffer, S. A., Sitaram, A., Schreck, F. & MoSaiQC Collaboration, 19 Mar 2025, In: Physical Review Research. 7, 1, 20 p., 013292.

    Research output: Contribution to journalJournal articleResearchpeer-review

    Open Access
    File
  • Continuous cavity QED with an atomic beam

    Famà, F., Zhou, S., Heizenreder, B., Tang, M., Bennetts, S., Jäger, S. B., Schäffer, S. A. & Schreck, F., 26 Dec 2024, In: Physical Review A. 110, 6, 14 p., 063721.

    Research output: Contribution to journalJournal articleResearchpeer-review

    Open Access
    File
    1 Downloads (Pure)
  • Cold atoms in space: community workshop summary and proposed road-map

    Alonso, I., Alpigiani, C., Altschul, B., Araújo, H., Arduini, G., Arlt, J., Badurina, L., Balaž, A., Bandarupally, S., Barish, B. C., Barone, M., Barsanti, M., Bass, S., Bassi, A., Battelier, B., Baynham, C. F. A., Beaufils, Q., Belić, A., Bergé, J. & Bernabeu, J. & 228 others, Bertoldi, A., Bingham, R., Bize, S., Blas, D., Bongs, K., Bouyer, P., Braitenberg, C., Brand, C., Braxmaier, C., Bresson, A., Buchmueller, O., Budker, D., Bugalho, L., Burdin, S., Cacciapuoti, L., Callegari, S., Calmet, X., Calonico, D., Canuel, B., Caramete, L. I., Carraz, O., Cassettari, D., Chakraborty, P., Chattopadhyay, S., Chauhan, U., Chen, X., Chen, Y. A., Chiofalo, M. L., Coleman, J., Corgier, R., Cotter, J. P., Michael Cruise, A., Cui, Y., Davies, G., De Roeck, A., Demarteau, M., Derevianko, A., Di Clemente, M., Djordjevic, G. S., Donadi, S., Doré, O., Dornan, P., Doser, M., Drougakis, G., Dunningham, J., Easo, S., Eby, J., Elertas, G., Ellis, J., Evans, D., Examilioti, P., Fadeev, P., Fanì, M., Fassi, F., Fattori, M., Fedderke, M. A., Felea, D., Feng, C. H., Ferreras, J., Flack, R., Flambaum, V. V., Fromhold, M., Gaaloul, N., Garraway, B. M., Georgousi, M., Geraci, A., Gibble, K., Gibson, V., Gill, P., Giudice, G. F., Goldwin, J., Gould, O., Grachov, O., Graham, P. W., Grasso, D., Griffin, P. F., Guerlin, C., Gündoğan, M., Gupta, R. K., Haehnelt, M., Hanımeli, E. T., Hawkins, L., Hees, A., Henderson, V. A., Herr, W., Herrmann, S., Hird, T., Hobson, R., Hock, V., Hogan, J. M., Holst, B., Holynski, M., Israelsson, U., Jeglič, P., Jetzer, P., Juzeliūnas, G., Kaltenbaek, R., Kamenik, J. F., Kehagias, A., Kirova, T., Kiss-Toth, M., Koke, S., Kolkowitz, S., Kornakov, G., Kovachy, T., Krutzik, M., Kumar, P., Lämmerzahl, C., Landsberg, G., Le Poncin-Lafitte, C., Leibrandt, D. R., Lévèque, T., Lewicki, M., Li, R., Lipniacka, A., Lisdat, C., Liu, M., Lopez-Gonzalez, J. L., Loriani, S., Louko, J., Luciano, G. G., Lundblad, N., Maddox, S., Mahmoud, M. A., Maleknejad, A., March-Russell, J., Massonnet, D., McCabe, C., Meister, M., Mežnaršič, T., Micalizio, S., Migliaccio, F., Millington, P., Milosevic, M., Mitchell, J., Morley, G. W., Müller, J., Murphy, E., Müstecaplıoğlu, Ö. E., O’Shea, V., Oi, D. K. L., Olson, J., Pal, D., Papazoglou, D. G., Pasatembou, E., Paternostro, M., Pawlowski, K., Pelucchi, E., Pereira dos Santos, F., Peters, A., Pikovski, I., Pilaftsis, A., Pinto, A., Prevedelli, M., Puthiya-Veettil, V., Quenby, J., Rafelski, J., Rasel, E. M., Ravensbergen, C., Reguzzoni, M., Richaud, A., Riou, I., Rothacher, M., Roura, A., Ruschhaupt, A., Sabulsky, D. O., Safronova, M., Saltas, I. D., Salvi, L., Sameed, M., Saurabh, P., Schäffer, S., Schiller, S., Schilling, M., Schkolnik, V., Schlippert, D., Schmidt, P. O., Schnatz, H., Schneider, J., Schneider, U., Schreck, F., Schubert, C., Shayeghi, A., Sherrill, N., Shipsey, I., Signorini, C., Singh, R., Singh, Y., Skordis, C., Smerzi, A., Sopuerta, C. F., Sorrentino, F., Sphicas, P., Stadnik, Y. V., Stefanescu, P., Tarallo, M. G., Tentindo, S., Tino, G. M., Tinsley, J. N., Tornatore, V., Treutlein, P., Trombettoni, A., Tsai, Y. D., Tuckey, P., Uchida, M. A., Valenzuela, T., Van Den Bossche, M., Vaskonen, V., Verma, G., Vetrano, F., von Klitzing, W., Waller, P., Walser, R., Wille, E., Williams, J., Wittrock, U., Woltmann, M., Wörner, L., Xuereb, A., Yahia, M., Yazgan, E., Yu, N., Zahzam, N., Zambrini Cruzeiro, E., Zhan, M., Zou, X., Zupan, J. & Zupanič, E., Dec 2022, In: EPJ Quantum Technology. 9, 1, 55 p., 30.

    Research output: Contribution to journalReviewpeer-review

    Open Access
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    46 Citations (Scopus)
  • Prospects of a superradiant laser based on a thermal or guided beam of 88Sr

    Tang, M., Schaffer, S. A. & Müller, J. H., 9 Dec 2022, In: Physical Review A. 106, 6, 10 p., 063704.

    Research output: Contribution to journalJournal articleResearchpeer-review

    Open Access
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    5 Citations (Scopus)
    45 Downloads (Pure)
  • Frequency ratio measurements at 18-digit accuracy using an optical clock network

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

    Research output: Contribution to journalJournal articleResearchpeer-review

    263 Citations (Scopus)