State-insensitive bichromatic optical trapping

TL;DR

This paper introduces a method for trapping neutral atoms using two laser wavelengths to achieve state-insensitive trapping, minimizing potential variance across atomic states.

Contribution

It presents a novel scheme utilizing bichromatic light to equalize ac Stark shifts in Rb atoms, enabling more stable trapping conditions.

Findings

Calculated wavelength pairs for equal Stark shifts in Rb 5s and 5p_{3/2} levels.

Demonstrated potential for improved atom trapping stability.

Provides a practical approach for state-insensitive optical trapping.

Abstract

We propose a scheme for state-insensitive trapping of neutral atoms by using light with two independent wavelengths. In particular, we describe the use of trapping and control lasers to minimize the variance of the potential experienced by a trapped Rb atom in ground and excited states. We present calculated values of wavelength pairs for which the 5s and 5p_{3/2} levels have the same ac Stark shifts in the presence of two laser fields.