We propose a method for transferring atoms to a target quantum state for a multilevel quantum system with sequentially increasing, but otherwise unknown, energy splitting. This is achieved with a feedback algorithm that processes off-resonant optical measurements of state populations during adiabatic rapid passage in real-time. Specifically, we reliably perform the transfer ∣F=2,mF=2⟩→∣1,1⟩→∣2,1⟩ for a sample of ultracold 87Rb in the presence of a random external magnetic field.
@article{arxiv.1810.04921,
title = {Deterministic quantum state transfer of atoms in a random magnetic field},
author = {Bianca J. Sawyer and Matthew Chilcott and Ryan Thomas and Amita B. Deb and Niels Kjærgaard},
journal= {arXiv preprint arXiv:1810.04921},
year = {2019}
}