Hamiltonian engineering of spin-orbit coupled fermions in a Wannier-Stark optical lattice clock
Abstract
Engineering a Hamiltonian system with tunable interactions provides opportunities to optimize performance for quantum sensing and explore emerging phenomena of many-body systems. An optical lattice clock based on partially delocalized Wannier-Stark states in a gravity-tilted shallow lattice supports superior quantum coherence and adjustable interactions via spin-orbit coupling, thus presenting a powerful spin model realization. The relative strength of the on-site and off-site interactions can be tuned to achieve a zero density shift at a `magic' lattice depth. This mechanism, together with a large number of atoms, enables the demonstration of the most stable atomic clock while minimizing a key systematic uncertainty related to atomic density. Interactions can also be maximized by driving off-site Wannier-Stark transitions, realizing a ferromagnetic to paramagnetic dynamical phase transition.
Keywords
Cite
@article{arxiv.2201.05909,
title = {Hamiltonian engineering of spin-orbit coupled fermions in a Wannier-Stark optical lattice clock},
author = {Alexander Aeppli and Anjun Chu and Tobias Bothwell and Colin J. Kennedy and Dhruv Kedar and Peiru He and Ana Maria Rey and Jun Ye},
journal= {arXiv preprint arXiv:2201.05909},
year = {2022}
}