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, J. 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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