Title:	Positronium Laser Cooling via the 13S-23P Transition with a Broadband Laser Pulse
Authors:	Glöggler, L T Gusakova, N Rienäcker, B Camper, A Caravita, R Huck, S Volponi, M Wolz, T Penasa, L Krumins, V Gustafsson, F P Comparat, D Auzins, M Bergmann, B Burian, P Brusa, R S Castelli, F Cerchiari, G Ciuryło, R Consolati, G Doser, M Graczykowski, Ł Grosbart, M Guatieri, F Haider, S Janik, M A Kasprowicz, G Khatri, G Kłosowski, Ł Kornakov, G Lappo, L Linek, A Malamant, J Mariazzi, S Petracek, V Piwiński, M Pospíšil, S Povolo, L Prelz, F Rangwala, S A Rauschendorfer, T Rawat, B S Rodin, V Røhne, M Sandaker, H Smolyanskiy, P Sowiński, T Tefelski, D Vafeiadis, T Welsch, C P Zawada, M Zielinski, Jakub Zurlo, N
Issue Date:	22-Feb-2024
Publisher:	American Physical Society
Citation:	Physical Review Letters, 2024, Vol.132, p083402
Abstract:	We report on laser cooling of a large fraction of positronium (Ps) in free flight by strongly saturating the 13S-23P transition with a broadband, long-pulsed 243 nm alexandrite laser. The ground state Ps cloud is produced in a magnetic and electric field-free environment.We observe two different laser-induced effects. The first effect is an increase in the number of atoms in the ground state after the time Ps has spent in the long-lived 23P states. The second effect is one-dimensional Doppler cooling of Ps, reducing the cloud’s temperature from 380(20) to 170(20) K.We demonstrate a 58(9)% increase in the fraction of Ps atoms with v1D < 3.7 × 104 ms−1.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/8275
Alternative Location:	https://arxiv.org/abs/2310.08760 http://dx.doi.org/10.1103/PhysRevLett.132.083402 https://ui.adsabs.harvard.edu/abs/2024PhRvL.132h3402G/abstract
Copyright:	2023, American Physical Society
Appears in Collections:	Research Papers (LAMP)

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