Details

Autor(en) / Beteiligte

• 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, O M
• Sandaker, H
• Smolyanskiy, P
• Sowiński, T
• Tefelski, D
• Vafeiadis, T
• Welsch, C P
• Zawada, M
• Zielinski, J
• Zurlo, N

Titel

Positronium Laser Cooling via the 1^{3}S-2^{3}P Transition with a Broadband Laser Pulse

Ist Teil von

• Physical review letters, 2024-02, Vol.132 (8), p.083402-083402

Ort / Verlag

United States

Erscheinungsjahr

2024

Quelle

American Physical Society

Beschreibungen/Notizen

• We report on laser cooling of a large fraction of positronium (Ps) in free flight by strongly saturating the 1^{3}S-2^{3}P 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 2^{3}P 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 v_{1D}<3.7×10^{4}  ms^{-1}.