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SYCM: Symposium Hot topics in cold molecules: From laser cooling to quantum resonances

SYCM 1: Hot topics in cold molecules: From laser cooling to quantum resonances

SYCM 1.3: Hauptvortrag

Freitag, 13. März 2020, 12:00–12:30, e415

Collisions between laser-cooled molecules and atoms — •Michael Tarbutt — Centre for Cold Matter, Blackett Laboratory, Imperial College London, London SW7 2AZ, UK

Ultracold molecules can be used to test fundamental physics, simulate many-body quantum systems, process quantum information, and study ultracold chemistry. We capture CaF molecules in a magneto-optical trap (MOT) [1, 2], cool them to a few microkelvin [3], trap them magnetically [4], and coherently control their rotational state [5, 6]. To increase the phase-space density, we aim to sympathetically cool the molecules using ultracold atoms. For this purpose, we have developed a dual-species MOT for CaF and Rb. I will present our first studies of collisions between these two species in the MOT and in a magnetic trap.

[1] S. Truppe et al., Nature Physics 13, 1173 (2017)

[2] H. J. Williams et al., New J. Phys. 19, 113035 (2017)

[3] L. Caldwell et al., Phys. Rev. Lett. 123, 033202 (2019)

[4] H. J. Williams et al., Phys. Rev. Lett. 120, 163201 (2018)

[5] J. A. Blackmore et al., Quantum Sci. Technol. 4, 014010 (2019)

[6] L. Caldwell et al., arXiv:1908.11839 (2019)