Bichromatic State-Insensitive Trapping of Cold 133Cs-87Rb Atomic Mixtures

TL;DR

This paper explores bichromatic trapping to achieve simultaneous state-insensitive trapping of cold Caesium and Rubidium atoms by tuning two different magic wavelengths to a common value.

Contribution

It introduces a bichromatic trapping method to enable simultaneous state-insensitive trapping of two different atomic species with distinct magic wavelengths.

Findings

Identified specific magic wavelength combinations for Cs and Rb

Demonstrated feasibility of bichromatic trapping for mixed atomic gases

Provided a practical approach for dual-species atomic trapping

Abstract

We investigate simultaneous state-insensitive trapping of a mixture of two different atomic species, Caesium and Rubidium. The magic wavelengths of the Caesium and Rubidium atoms are different, $935.6$ nm and $789.9$ nm respectively, thus single-frequency simultaneous state-insensitive trapping is not possible. We thus identify bichromatic trapping as a viable approach to tune the two magic wavelengths to a common value. Correspondingly, we present several common magic wavelength combinations appropriate for simultaneous state-insensitive trapping of the two atomic species.