Sofus L. Kristensen
University of California, Berkeley
8 Papers
2 Citations
Sofus L. Kristensen is an academic researcher from University of California, Berkeley. The author has contributed to research in topics: Gravimeter & Gravitational field. The author has an hindex of 2, co-authored 4 publications.
Chat about Author
Papers
Probing gravity by holding atoms for 20 seconds
TL;DR: A trapped atom interferometer in which the interrogation time of the interferometric measurements can be extended to 20 seconds, which can be used to make fundamental tests of general relativity as well as precision measurements of other potentials.
169
Subnatural Linewidth Superradiant Lasing with Cold ^{88}Sr Atoms.
Sofus L. Kristensen,Eliot A. Bohr,Julian Robinson-Tait,Tanya Zelevinsky,Jan W. Thomsen,Jörg H. Müller +5 more
TL;DR: In this paper , the authors investigated the properties of super-radiant lasing in an ensemble of ultracold atoms inside an optical cavity, and extended the superradiant emission on the 7.5 kHz wide intercombination line to several milliseconds.
5
Subnatural Linewidth Superradiant Lasing with Cold <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Sr</mml:mi></mml:mrow><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>88</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></m
Sofus L. Kristensen,Eliot A. Bohr,Julian Robinson-Tait,Tanya Zelevinsky,Jan W. Thomsen,Jörg H. Müller +5 more
TL;DR: In this article , the authors investigated the properties of super-radiant lasing in an ensemble of ultracold atoms inside an optical cavity, and extended the superradiant emission on the 7.5 kHz wide intercombination line to several milliseconds.
Collectively enhanced Ramsey readout by cavity sub- to superradiant transition
Eliot A. Bohr,Sofus L. Kristensen,Christoph Hotter,S. A. Schaffer,Julian Robinson-Tait,Jan W. Thomsen,Tanya Zelevinsky,Helmut Ritsch,J. H. Muller +8 more
- 21 Jun 2023
TL;DR: In this paper , the authors show how to take advantage of the resulting sub-to-superradiant transition in cavity-coupled quantum emitters by using a Ramsey pulse sequence to protect the atoms from collective cavity decay.
Probing gravity by holding atoms for 20 seconds
TL;DR: In this paper, the authors achieved an interrogation time of 20 seconds by suspending the spatially-separated atomic wavepackets in a lattice formed by the mode of an optical cavity.
2