[en] We have studied the formation of ultracold RbSr molecules with laser pulses. After discussing the advantages
of the Mott insulator phase for the control with pulses, we present two classes of strategies. The first class
involves two electronic states. Two extensions of stimulated Raman adiabatic passage (STIRAP) for multilevel
transitions are used: alternating STIRAP (A-STIRAP) and straddle STIRAP (S-STIRAP). Both transfer dynamics
are modeled and compared. The second class of strategies involves only the electronic ground state and uses
infrared (IR) and terahertz (THz) pulses. The molecular bond is first created by the application of a THz chirped
pulse or π-pulse. Subsequently, the molecules are transferred to their rovibrational ground level using IR pulses.
For this last step, different optimized pulse sequences that were obtained through optimal control techniques
have been studied. The relative merits of these strategies in terms of efficiency and robustness are discussed with
respect to the experimental feasibility based on present laser technologies.
Disciplines :
Physics
Author, co-author :
Devolder, Adrien
Desouter, Michèle ; Université de Liège - ULiège > Département de chimie (sciences) > Département de chimie (sciences)
Atabek, Osman
Luc-Koenig, Eliane
Dulieu, Olivier
Language :
English
Title :
Laser control of ultracold molecule formation: The case of RbSr
Publication date :
2021
Journal title :
Physical Review. A, Atomic, molecular, and optical physics
ISSN :
1050-2947
eISSN :
1094-1622
Publisher :
American Physical Society, United States - Maryland
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