研究目的
Investigating the laser-assisted self-induced Feshbach resonance for controlling heteronuclear quantum gas mixtures and the formation of ultracold molecules.
研究成果
The study demonstrates the feasibility of controlling the scattering properties of heteronuclear quantum gas mixtures and forming ultracold molecules using a laser-assisted self-induced Feshbach resonance. The mechanism offers flexible control opportunities with laser frequency and intensity, presenting a promising alternative to magnetic Feshbach resonances for species that hardly exhibit them.
研究不足
The main limitation is the challenge of designing suitable sources in the subterahertz frequency domain for the proposed scheme. Additionally, the study is theoretical, and practical implementation may face technical constraints.
1：Experimental Design and Method Selection:
The study involves the theoretical analysis of a laser-assisted self-induced Feshbach resonance (LASIFR) in heteronuclear quantum gas mixtures, specifically 87Rb and 84Sr atoms. The methodology includes solving the time-independent coupled equations for the Floquet eigenstates under the influence of a continuous wave (cw) laser.
2：Sample Selection and Data Sources:
The samples are ultracold 87Rb and 84Sr atoms. The data sources include molecular parameters from previous works and electronic structure calculations.
3：List of Experimental Equipment and Materials:
The study is theoretical, but it implies the use of a cw laser with specific intensity and frequency, and a setup for trapping ultracold atoms.
4：Experimental Procedures and Operational Workflow:
The procedure involves adiabatically increasing the intensity of the cw laser to occupy an eigenlevel of the Floquet Hamiltonian, solving the coupled equations for the Floquet eigenstates, and analyzing the variation of the interspecies scattering length with laser frequency and intensity.
5：Data Analysis Methods:
The analysis includes fitting the variation of the scattering length with detuning and intensity to determine the resonance reduced width and modeling the population transfer during the STIRAP process.
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