Probing Photoinduced Two-Body Loss of Ultracold Nonreactive Bosonic Na23Rb87 and

Philipp Gersema

¹

,

Kai K. Voges

²

,

Mara Meyer zum Alten Borgloh

³

et al.

Complexes formed in collisions between ultracold alkali-metal diatomic molecules and atoms

“…Christianen et al [61] proposed that the complexes are instead excited by the trapping laser, and showed that this can occur fast enough to account for the observed trap loss. This proposal is supported by experiments on collisions of RbCs [62,63] and 40 KRb [64], though recent experiments on Na 40 K [65] and on Na 39 K and Na 87 Rb [66] suggest that the complexes have longer lifetimes than predicted in the absence of the trapping laser.…”

Quantum control of reactions and collisions at ultralow temperatures

“…The photo-excitation was also studied in 23 Na 87 Rb, 23 Na 39 K, and 23 Na 40 K gases. 108,109 In these systems, the lifetime of the collision complex predicted by the RRKM model is only a few tens of microseconds, and thus a notable extension of the lifetime of the molecular gases in the intensity-modulated dipole trap should be observable. However, in these experiments, no obvious enhancement of the lifetime of the molecular gases in intensity-modulated dipole traps was observed.…”

Complex collisions of ultracold molecules: A toy model

“…Since then, a series of recent experiments confirm such photoinduced loss in both reactive and nonreactive molecule-molecule and atom-molecule collisions [107][108][109]. Experiments studying different bialkali species [110][111][112] suggest that the complex lifetime may be underestimated or that there are unknown loss mechanisms beyond photoinduced loss. The control of dipolar interactions via microwave dressing [113,114] and electric fields [115][116][117][118] is being studied, including the interaction effects on molecule loss.…”