Effective creation of ultracold deeply-bound molecules via non-Hermitian stimulated Raman shortcut-to-adiabatic passage

Zhang, Jia-Hui; Naim, Nida; Deng, Li; Niu, Yueping; Gong, Shangqing

doi:10.1016/j.rinp.2023.106421

Cited by 3 publications

(1 citation statement)

References 38 publications

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“…This method maintains the same initial and final states as those in the adiabatic passage, but without following the adiabatic passage at the intermediate time instants. Despite the advantages, the resulting efficiency of the invariant-based STA in standard Λ-type system may be extremely low due to the inevitable transient excitation of very short lived excited state [80][81][82][83][84]. Therefore, the exploration of feasible Invariant-based STA methods for three-and multi-state systems, by reducing the number of applied pulses and by optimizing the pulse' shapes, deserves more investigations.…”

Section: Introductionmentioning

confidence: 99%

Effective Creation of Ultracold Deeply-Bound Molecules Via Non-Hermitian Stimulated Raman Shortcut-to-Adiabatic Passage

Zhang¹,

Naim²,

Deng³

et al. 2023

SSRN Journal

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Section: Introductionmentioning

confidence: 99%

Effective Creation of Ultracold Deeply-Bound Molecules Via Non-Hermitian Stimulated Raman Shortcut-to-Adiabatic Passage

Zhang¹,

Naim²,

Deng³

et al. 2023

SSRN Journal

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Efficient atom-molecule conversion in Bose–Einstein condensates based on nonlinear dressed-state scheme

Cao

Han

2023

Chaos, Solitons & Fractals

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Highly efficient creation and detection of deeply bound molecules via invariant-based inverse engineering with feasible modified drivings

Zhang

2024

The Journal of Chemical Physics

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Stimulated Raman Adiabatic Passage (STIRAP) and its variants, such as M-type chainwise-STIRAP, allow for efficiently transferring the populations in a multilevel system and have widely been used to prepare molecules in their rovibrational ground state. However, their transfer efficiencies are generally imperfect. The main obstacle is the presence of losses and the requirement to make the dynamics adiabatic. To this end, in the present paper, a new theoretical method is proposed for the efficient and robust creation and detection of deeply bound molecules in three-level Λ-type and five-level M-type systems via “Invariant-based shortcut-to-adiabaticity.” In the regime of large detunings, we first reduce the dynamics of three- and five-level molecular systems to those of effective two- and three-level counterparts. By doing so, the major molecular losses from the excited states can be well suppressed. Consequently, the effective two-level counterpart can be directly compatible with two different “Invariant-based Inverse Engineering” protocols; the results show that both protocols give a comparable performance and have a good experimental feasibility. For the effective three-level counterpart, by considering a relation among the four incident pulses, we show that this model can be further generalized to an effective Λ-type one with the simplest resonant coupling. This generalized model permits us to borrow the “Invariant-based Inverse Engineering” protocol from a standard three-level Λ-type system to a five-level M-type system. Numerical calculations show that the weakly bound molecules can be efficiently transferred to their deeply bound states without strong laser pulses, and the stability against parameter variations is well preserved. Finally, the detection of ultracold deeply bound molecules is discussed.

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Effective creation of ultracold deeply-bound molecules via non-Hermitian stimulated Raman shortcut-to-adiabatic passage

Cited by 3 publications

References 38 publications

Effective Creation of Ultracold Deeply-Bound Molecules Via Non-Hermitian Stimulated Raman Shortcut-to-Adiabatic Passage

Effective Creation of Ultracold Deeply-Bound Molecules Via Non-Hermitian Stimulated Raman Shortcut-to-Adiabatic Passage

Efficient atom-molecule conversion in Bose–Einstein condensates based on nonlinear dressed-state scheme

Highly efficient creation and detection of deeply bound molecules via invariant-based inverse engineering with feasible modified drivings

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