Stefan Alaric Schäffer
Postdoc
Quantop
Blegdamsvej 17
2100 København Ø
- 2024
- 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
- 2022
- 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 journal › Journal article › Research › peer-review
- 2021
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
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 journal › Journal article › Research › peer-review
- 2020
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
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
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
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 journal › Journal article › Research › peer-review
- 2019
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 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
ID: 143261181
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333
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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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163
downloads
Towards the optical second: verifying optical clocks at the SI limit
Research output: Contribution to journal › Journal article › Research › peer-review
Published -
57
downloads
AEDGE: Atomic Experiment for Dark Matter and Gravity Exploration in Space
Research output: Contribution to journal › Journal article › Research › peer-review
Published