Hamiltonian engineering of spin-orbit–coupled fermions in a Wannier-Stark optical lattice clock-Reference-Cited by-同舟云学术

Hamiltonian engineering of spin-orbit–coupled fermions in a Wannier-Stark optical lattice clock

Published:2022-10-14 Issue:41 Volume:8 Page:
ISSN:2375-2548
Container-title:Science Advances
language:en
Short-container-title:Sci. Adv.

Author:

Aeppli Alexander¹^ORCID,Chu Anjun¹²^ORCID,Bothwell Tobias¹^ORCID,Kennedy Colin J.¹,Kedar Dhruv¹^ORCID,He Peiru¹²^ORCID,Rey Ana Maria¹²^ORCID,Ye Jun¹^ORCID

Affiliation:

1. JILA, National Institute of Standards and Technology, and Department of Physics, University of Colorado, Boulder, CO 80309, USA.

2. Center for Theory of Quantum Matter, University of Colorado, Boulder, CO 80309, USA,

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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