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Rostock 2019 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 57: Poster: Quantum Optics and Photonics III

Q 57.36: Poster

Donnerstag, 14. März 2019, 16:15–18:15, S Fobau Physik

Towards a steady-state superradiant optical clock — •Shayne Bennetts, Rodrigo Gonzalez Escudero, Chun-Chia Chen, Benjamin Pasquiou, and Florian Schreck — Institute of Physics, University of Amsterdam

Superradiant lasers have been proposed as a next generation optical atomic clock [1]. Recently, a pulsed superradiant laser was demonstrated using the 87Sr clock transition [2] but a clock with millihertz stability requires steady-state operation.

Building on our earlier work [3] we have demonstrated sources ideal for pumping a steady-state superradiant laser. Firstly, our steady state beam guided horizontally by a dipole laser has a radial temperature of  1µK and a flux >6 × 106 88Sr/s. Additionally, by using a new deceleration and cooling technique [4] we show we are able to cool and trap this beam in a dipole trap forming a continuously loaded reservoir of atoms. These show great potential for pumping a continuous superradiant laser and making a steady-state BEC or atom laser. We also demonstrate operation of this architecture on the 87Sr isotope which is of particular interest for clocks. Finally, we will describe a next generation machine we are constructing based on these techniques which aims to produce a steady state superradiant laser.

[1] Meiser et al., PRL 102, 163601 (2009).

[2] Norcia et al., Sci Adv 2, 10, e1601231 (2016).

[3] Bennetts et al., PRL 119, 223202 (2017).

[4] Chen et al., arXiv:1810.07157 [physics.atom-ph] (2018).

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