Magic-wavelength optical traps for Rydberg atoms

TL;DR

This paper introduces blue-detuned optical traps with magic conditions for both ground and Rydberg atoms, enabling precise trapping with minimal differential shifts, crucial for quantum information applications.

Contribution

It proposes a novel trap design that achieves magic trapping conditions for ground and Rydberg states, including compensation techniques and detailed shift calculations.

Findings

Less than 200 kHz differential trap shift for Cs atoms at 10 μK

Designs incorporate background compensation fields or geometry adjustments

Analysis includes trap potential and photoionization rates

Abstract

We propose blue-detuned optical traps that are suitable for trapping of both ground state and Rydberg excited atoms. Addition of a background compensation field or suitable choice of the trap geometry provides a magic trapping condition for ground and Rydberg atoms at the trap center. Deviations from the magic condition at finite temperature are calculated. Designs that achieve less than 200 kHz differential trap shift between Cs ground and 125s Rydberg states for 10 {\mu}K Cs atoms are presented. Consideration of the trapping potential and photoionization rates