Probing Photoinduced Two-Body Loss of Ultracold Nonreactive BosonicNa23Rb87andNa23K39Molecules,Physical Review Letters

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Probing Photoinduced Two-Body Loss of Ultracold Nonreactive BosonicNa23Rb87andNa23K39Molecules
Physical Review Letters ( IF 8.1 ) Pub Date : 2021-10-11 , DOI: 10.1103/physrevlett.127.163401
Philipp Gersema ₁ , Kai K Voges ₁ , Mara Meyer Zum Alten Borgloh ₁ , Leon Koch ₁ , Torsten Hartmann ₁ , Alessandro Zenesini _{1,

2} , Silke Ospelkaus ₁ , Junyu Lin ₃ , Junyu He ₃ , Dajun Wang ₃

Affiliation

We probe photoinduced loss for chemically stable bosonic

{}^{23}{Na} {}^{87}{Rb}

and

{}^{23}{Na} {}^{39}K

molecules in chopped optical dipole traps, where the molecules spend a significant time in the dark. We expect the effective two-body decay to be significantly suppressed due to the small expected complex lifetimes of about 13 and

6 μ s

for

{}^{23}{Na} {}^{87}{Rb}

and

{}^{23}{Na} {}^{39}K

, respectively. However, instead we do not observe any suppression of the two-body loss in parameter ranges where large loss suppressions are expected. We believe these unexpected results are most probably due to drastic underestimation of the complex lifetime by at least 1–2 orders of magnitude.

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