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Creating a stable molecular condensate using a generalized Raman adiabatic passage scheme
Hong Y Ling1, Han Pu, Brian Seaman
1Department of Physics, Rowan University, Glassboro, New Jersey 08028-1700, USA.
Physical Review Letters
|February 9, 2005
Summary
Stable molecules can be created from atomic Bose condensates using Feshbach resonance assisted stimulated adiabatic passage. This method overcomes previous efficiency limitations by carefully choosing a passage route to avoid unstable regimes.
Area of Science:
- Atomic, Molecular, and Optical (AMO) Physics
- Quantum Control
- Condensed Matter Physics
Background:
- Creating stable molecules from atomic Bose condensates is crucial for quantum technologies.
- Feshbach resonance assisted stimulated adiabatic passage is a promising technique.
- Previous studies suggested mean-field shifts limit conversion efficiency.
Purpose of the Study:
- To investigate the feasibility of creating stable molecules from Bose condensates using a specific adiabatic passage method.
- To explore the role of coherent population trapping states in this process.
- To determine if mean-field shifts inherently limit conversion efficiency.
Main Methods:
- Studying Feshbach resonance assisted stimulated adiabatic passage with an effective coupling field.
- Analyzing the properties of the coherent population trapping state.
- Exploring adiabatic passage routes to manage phase shifts and stability.
Main Results:
- Demonstrated that mean-field shifts do not necessarily limit conversion efficiency.
- Identified adiabatic passage routes that compensate for collision mean-field phase shifts.
- Showed that avoiding the dynamically unstable regime is key.
Conclusions:
- Efficient creation of stable molecules from Bose condensates is achievable.
- Careful selection of adiabatic passage routes can overcome mean-field shift limitations.
- This work provides a pathway for enhanced molecular synthesis in quantum systems.