Laser Cooling Positronium with Broadband Laser Pulses

Caravita, R.; Mariazzi, S.; Penasa, L.; Rodin, V.; Brusa, R. S.; Gusakova, N.; Haider, S.; Piwiński, M.; Janik, M. A.; Consolati, G.; Giszczak, A.; Volponi, M.; Rauschendorfer, T.; Sowiński, T.; Welsch, C. P.; Glöggler, L. T.; Bergmann, B.; Povolo, L.; Tefelski, D.; Linek, A.; Ferguson, R.; Germann, M.; Pecak, D.; Burian, P.; Moskal, P.; Petracek, V.; Camper, A.; Huck, S.; Rienäcker, B.; Gustafsson, F.; Berghold, M.; Kasprowicz, G.; Khatri, G.; Eliaszuk, K.; Zielinski, J.; Smolyanskiy, P.; Kempny, K.; Guatieri, F.; Sharma, S.; Zurlo, N.; Røhne, O. M.; Kłosowski, Ł.; Sandaker, H.; Castelli, F.; Alfaro Campos, S.; Graczykowski, Ł.; Ciuryło, R.; Chehaimi, A.; Grosbart, M.; Lappo, L.; Auzins, M.; Zawada, M.; Münster, M.; Krumins, V.; Pandey, P.; Kornakov, G.; Vafeiadis, T.; Prelz, F.; Pospisil, S.; Januszek, T.; Rangwala, S. A.; Hugenschmidt, C.; Cerchiari, G.; Doser, M.; Rawat, B. S.

doi:10.1088/1742-6596/3029/1/012002

Journal Article/Contribution to a conference proceedings

IMPULSE-2026-00034

Laser Cooling Positronium with Broadband Laser Pulses

Caravita, R. (Corresponding author) ; Alfaro Campos, S. ; Auzins, M. ; Berghold, M.MLZ* ; Bergmann, B. ; Burian, P. ; Brusa, R. S. ; Camper, A. ; Castelli, F. ; Cerchiari, G. ; Ciuryło, R. ; Chehaimi, A. ; Consolati, G. ; Doser, M. ; Eliaszuk, K. ; Ferguson, R. ; Germann, M. ; Giszczak, A. ; Glöggler, L. T. ; Graczykowski, Ł. ; Grosbart, M. ; Guatieri, F.MLZ* ; Gusakova, N. ; Gustafsson, F. ; Haider, S. ; Huck, S. ; Hugenschmidt, C.MLZ* ; Janik, M. A. ; Januszek, T. ; Kasprowicz, G. ; Kempny, K. ; Khatri, G. ; Kłosowski, Ł. ; Kornakov, G. ; Krumins, V. ; Lappo, L. ; Linek, A. ; Mariazzi, S. ; Moskal, P. ; Münster, M. ; Pandey, P. ; Pecak, D. ; Penasa, L. ; Petracek, V. ; Piwiński, M. ; Pospisil, S. ; Povolo, L. ; Prelz, F. ; Rangwala, S. A. ; Rauschendorfer, T. ; Rawat, B. S. ; Rienäcker, B. ; Rodin, V. ; Røhne, O. M. ; Sandaker, H. ; Sharma, S. ; Smolyanskiy, P. ; Sowiński, T. ; Tefelski, D. ; Vafeiadis, T. ; Volponi, M. ; Welsch, C. P. ; Zawada, M. ; Zielinski, J. ; Zurlo, N.

2025
IOP Publ. Bristol

13th International Workshop on Positron and Positronium Chemistry (PPC-13), Kanazawa, Japan, 27 Oct 2025 - 1 Nov 2025 Journal of physics / Conference Series 3029(1), 012002 - (2025) [10.1088/1742-6596/3029/1/012002]

Please use a persistent id in citations: doi:10.1088/1742-6596/3029/1/012002

Abstract: The first successful demonstration of broadband laser cooling of positronium (Ps) atoms, obtained within the AEgIS experiment at CERN, is presented here. By employing a custom-designed pulsed alexandrite laser system at 243 nm featuring long-duration pulses of 70 ns and an energy able to saturate the 1${}^3$S–2${}^3$P transition over the broad spectrum range of 360 GHz, the temperature of a room-temperature Ps cloud was reduced from 380 K to 170 K in 70 ns. This advancement opens new avenues for precision spectroscopy, antihydrogen production, and fundamental tests with antimatter.

Keyword(s): Basic research (1st) ; Particle Physics (2nd)

Classification: