Stefan Alaric Schäffer
Postdoc
Quantop
Blegdamsvej 17
2100 København Ø
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, , 15 May 2020, In: Cleo. F183, STh3G.3.Research output: Contribution to journal › Conference article › Research › peer-review
- 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. 87-90Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 448-454Research output: Contribution to journal › Journal article › Research › peer-review
- 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: IEEEResearch output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
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
- 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, , 4 Mar 2020, In: EPJ Quantum Technology. 7, 1, 27 p., 6.Research output: Contribution to journal › Journal article › Research › peer-review
- 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. 357-362Research output: Contribution to journal › Conference article › Research › peer-review
- 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
- 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
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, , Sep 2020, In: Physical Review Research. 2, 3, 033395.Research output: Contribution to journal › Journal article › Research › peer-review
ID: 143261181
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Towards passive and active laser stabilization using cavity-enhanced atomic interaction
Research output: Contribution to journal › Journal article › Research › peer-review
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157
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Towards the optical second: verifying optical clocks at the SI limit
Research output: Contribution to journal › Journal article › Research › peer-review
Published -
56
downloads
AEDGE: Atomic Experiment for Dark Matter and Gravity Exploration in Space
Research output: Contribution to journal › Journal article › Research › peer-review
Published