Optimal preparation of quantum states on an atom chip device

TL;DR

This paper demonstrates high-fidelity preparation of various quantum states in a Rubidium Bose-Einstein condensate on an atom chip, addressing noise and imperfections, and applies the method to enhance atomic interferometer sensitivity.

Contribution

It introduces an experimental scheme for optimal quantum state preparation on atom chips that accounts for noise and imperfections, improving quantum control.

Findings

Achieved high-accuracy internal state preparation of Rubidium BECs.

Enhanced atomic interferometer sensitivity using the prepared states.

Validated the scheme's robustness against experimental imperfections.

Abstract

Atom chips provide compact and robust platforms towards practical quantum technologies. A quick and faithful preparation of arbitrary input states for these systems is crucial but represents a very challenging experimental task. This is especially difficult when the dynamical evolution is noisy and unavoidable setup imperfections have to be considered. Here, we experimentally prepare with very high small errors different internal states of a Rubidium Bose-Einstein condensate realized on an atom chip. As a possible application of our scheme, we apply it to improve the sensitivity of an atomic interferometer.