Jan Westenkær Thomsen
Head of Department, Professor
Administration
Blegdamsvej 17, 2100 København Ø, 05 Bygning A, Building: 05-1-AB1
Quantum Information Science & Technology
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, J. C., 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
- 2023
- Published
Subnatural Linewidth Superradiant Lasing with Cold 88Sr Atoms
Kristensen, Sofus Laguna, Bohr, Eliot, Robinson-Tait, J., Zelevinsky, Tanya, Thomsen, Jan Westenkær & Müller, Jörg Helge, 2 Jun 2023, In: Physical Review Letters. 130, 22, 5 p., 223402.Research output: Contribution to journal › Letter › Research › peer-review
- 2022
- Published
Petabit-per-second data transmission using a chip-scale microcomb ring resonator source
Jorgensen, A. A., Kong, D., Henriksen, M. R., Klejs, F., Ye, Z., Helgason, O. B., Hansen, H. E., Hu, H., Yankov, M., Forchhammer, S., Andrekson, P., Larsson, A., Karlsson, M., Schroder, J., Sasaki, Y., Aikawa, K., Thomsen, J. W., Morioka, T., Galili, M., Torres-Company, V. & 1 others, , 20 Oct 2022, In: Nature Photonics. 16, p. 798-802 8 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2021
- Published
Cavity-immune spectral features in the pulsed superradiant crossover regime
Tang, M., Schaffer, S. A., Jørgensen, Asbjørn Arvad, Henriksen, M. R., Christensen, B. T. R., Müller, Jörg Helge & Thomsen, Jan Westenkær, 17 Sep 2021, In: Physical Review Research. 3, 3, 9 p., 033258.Research output: Contribution to journal › Journal article › Research › peer-review
- 2020
- Published
Single Dark-Pulse Kerr Comb Supporting 1.84 Pbit/s Transmission over 37-Core Fiber
Kong, D., Jorgensen, A. A., Henriksen, M. R., Klejs, F., Ye, Z., Helgason, O. B., Hansen, H. E., Hu, H., Yankov, M., Forchhammer, S., Andrekson, P., Larsson, A., Karlsson, M., Schroeder, J., Sasaki, Y., Aikawa, K., Thomsen, J. W., Morioka, T., Galili, M., Torres-Company, V. & 1 others, , 10 May 2020, 2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO). San Jose, California, USA: IEEE, 2 p. JTh4A.7. (Conference on Lasers and Electro-Optics).Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › 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
- Published
SAGE: A proposal for a space atomic gravity explorer
Tino, G. M., Bassi, A., Bianco, G., Bongs, K., Bouyer, P., Cacciapuoti, L., Capozziello, S., Chen, X., Chiofalo, M. L., Derevianko, A., Ertmer, W., Gaaloul, N., Gill, P., Graham, P. W., Hogan, J. M., Iess, L., Kasevich, M. A., Katori, H., Klempt, C., Lu, X. & 27 others, , 1 Nov 2019, In: The European Physical Journal D: Atomic, Molecular, Optical and Plasma Physics. 73, 11, 228.Research output: Contribution to journal › Journal article › Research › peer-review
- 2017
- Published
Dynamics of bad-cavity-enhanced interaction with cold Sr atoms for laser stabilization
Schäffer, Stefan Alaric, Christensen, B. T. R., Henriksen, M. R. & Thomsen, Jan Westenkær, 24 Jul 2017, In: Physical Review A. 96, 1, 013847.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Towards passive and active laser stabilization using cavity-enhanced atomic interaction
Schäffer, Stefan Alaric, Christensen, B. T. R., Rathmann, S. M., Appel, Martin Hayhurst, Henriksen, M. R. & Thomsen, Jan Westenkær, 19 Jun 2017, In: Journal of Physics - Conference Series. 810, 1, 7 p., 012002.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Towards Actively Stabilized Micro Ring Resonator Based Frequency Combs
Henriksen, M. R., Kamel, A. N., Pu, M., Yvind, K. & Thomsen, Jan Westenkær, 2017, 2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO). San Jose, USA: Optical Society of America, JTh2A.88. (Conference on Lasers and Electro-Optics).Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
- 2016
- Published
Compact, CO2-stabilized tuneable laser at 2.05 microns
Westergaard, P. G., Thomsen, Jan Westenkær, Henriksen, M. R., Michieletto, M., Triches, M., Lyngsø, J. K. & Hald, J., 7 Mar 2016, In: Optics Express. 24, 5, p. 4872-4880Research output: Contribution to journal › Journal article › Research › peer-review
- 2015
- 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
Towards Molecular Clocks Using Large Waist Cavity Enhanced Spectroscopy: FACT workshop
Adsersen, S. S., Henriksen, M. R., Schäffer, Stefan Alaric & Thomsen, Jan Westenkær, 1 Sep 2015Research output: Other contribution › Research
- Published
Laser stabilization using saturated absorption in a cavity-QED system
Tieri, D. A., Cooper, J., Christensen, B. T. R., Thomsen, Jan Westenkær & Holland, M. J., 10 Jul 2015, In: Physical Review A (Atomic, Molecular and Optical Physics). 92, 1, 013817.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Large waist cavity for ultra-narrow transition spectroscopy
Schäffer, Stefan Alaric, Adsersen, S. S., Christensen, B. T. R. & Thomsen, Jan Westenkær, 12 Apr 2015, 2015 Joint Conference of the IEEE International Frequency Control Symposium & the European Frequency and Time Forum . IEEE ed. Denver,CO, p. 625-629 15285778. (IEEE International Frequency Control Symposium & the European Frequency and Time Forum; No. 15285778).Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › 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
Hyperfine structure of the (3s3d)3J manifold of 25Mg I
Kjoller, K., Porsev, S. G., Westergaard, P. G., Andersen, Nils Overgaard & Thomsen, Jan Westenkær, 26 Mar 2015, In: Physical Review A (Atomic, Molecular and Optical Physics). 91, 3, 032515.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Observation of Motion-Dependent Nonlinear Dispersion with Narrow-Linewidth Atoms in an Optical Cavity
Westergaard, P. G., Christensen, B. T. R., Tieri, D., Matin, R., Cooper, J., Holland, M., Ye, J. & Thomsen, Jan Westenkær, 4 Mar 2015, In: Physical Review Letters. 114, 9, 093002.Research output: Contribution to journal › Journal article › Research › peer-review
- 2013
- Published
A classroom demonstration of reciprocal space
Madsen, M. H., Høpfner, L., Rasmussen, N., Stolborg, M., Nygård, Jesper, Feidenhans'l, Robert Krarup & Thomsen, Jan Westenkær, 18 Mar 2013, In: American Journal of Physics. 81, 4, 7 p., 274.Research output: Contribution to journal › Journal article › Research › peer-review
- 2011
- Published
Extreme nonlinear response of ultranarrow optical transitions in cavity QED for laser stabilization
Martin, M. J., Meiser, D., Thomsen, Jan Westenkær, Ye, J. & Holland, M. J., 5 Dec 2011, In: Physical Review A (Atomic, Molecular and Optical Physics). 84, 6, p. 063813Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Experimental Determination of the 24Mg I (3s3p)3P2 Lifetime
Jensen, B. B., He, M., Westergaard, P. G., Gunarsson, K., Madsen, M. H., Brusch, A., Hald, J. & Thomsen, Jan Westenkær, 7 Sep 2011, In: Physical Review Letters. 107, 11, p. 113001 5 p.Research output: Contribution to journal › Journal article › Research › peer-review
- 2010
- Published
Measurement of the (3s3p)1 P–(3s3d)1 D isotope shift in Mg¿
Steenstrup, M. P. H., Brusch, A., Hald, J., Jensen, B. B. & Thomsen, Jan Westenkær, 12 Nov 2010, In: Physical Review A (Atomic, Molecular and Optical Physics). 82, 5, p. 054501 3 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Precision measurement of fermionic collisions using an 87Sr optical lattice clock with 1 × 10-16 inaccuracy
Swallows....[et al.], M. D., Campbell, G. K., Boyd, M. M. & Thomsen, Jan Westenkær, 4 Mar 2010, In: IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control. 57, 3, p. 574-582 8 p.Research output: Contribution to journal › Conference article › Research › peer-review
- 2009
- Published
Isotope shifts of the (3s3p) 3P0,1,2-(3s4s) 3S1 Mg I transitions
He, M., Therkildsen, K. T., Jensen, B. B., Brusch, A., Thomsen, Jan Westenkær & Porsev, S. G., 2009, In: Physical Review A (Atomic, Molecular and Optical Physics). 80, 2, p. 024501 4 p.Research output: Contribution to journal › Journal article › Research › peer-review
- Published
Measurement of the spin-forbidden decay rate (3s3d)1D2¿(3s3p)3 P2,1 in 24Mg
Therkildsen, K. T., Jensen, B. B., Ryder, C. P., Malossi, N. & Thomsen, Jan Westenkær, 2009, In: Physical Review A (Atomic, Molecular and Optical Physics). 79, 3, p. 034501 4 p.Research output: Contribution to journal › Journal article › Research › peer-review
ID: 8831
Most downloads
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316
downloads
Towards passive and active laser stabilization using cavity-enhanced atomic interaction
Research output: Contribution to journal › Journal article › Research › peer-review
Published -
174
downloads
Petabit-per-second data transmission using a chip-scale microcomb ring resonator source
Research output: Contribution to journal › Journal article › Research › peer-review
Published -
93
downloads
Single Dark-Pulse Kerr Comb Supporting 1.84 Pbit/s Transmission over 37-Core Fiber
Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review
Published