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.

References in corpus (9)

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• Systematic evaluation of an atomic clock at 2e-18 total uncertainty
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• Clock precision beyond the Standard Quantum Limit at $10^{-18}$ level
• Excited-Band Coherent Delocalization for Improved Optical Lattice Clock Performance
• Exploring the dynamical interplay between mass-energy equivalence, interactions and entanglement in an optical lattice clock
• Synthetic non-Abelian topological charges in ultracold atomic gases
• High-fidelity imaging of a band insulator in a three-dimensional optical lattice clock
• Superconductivity in a Topological Lattice Model with Strong Repulsion
• Control and amplification of Bloch oscillations via photon-mediated interactions
• Ratchet Loading and Multi-Ensemble Operation in an Optical Lattice Clock
• Entanglement-enhanced Synchronous differential comparison
• Synthetic spin-orbit coupling for the multispin models in optical lattices
• Absolute frequency measurements on the $5s5p^3$P${}_0\to 5s6d^3$D${}_1$ transition in strontium
• A symmetry-protected topological optical lattice clock
• Two-band atomic superfluidity in the presence of an orbital Feshbach resonance