Probing Su–Schrieffer–Heeger-like behavior of spin-orbit–coupled fermions in a tilted optical lattice

Speaker Name/Affiliation
Tianrui Xu / JILA
Seminar Type
Location (Room)
Duane Physics Room G126
Event Details & Abstracts

Lunch is provided at 12:00 pm before the talk.


Abstract:  We theoretically study the dynamics of spin-orbit-coupled fermions in a tilted optical lattice. In a specific parameter regime, accessible under current conditions, we show the Hamiltonain can be approximated to the one emergent from a tilted Su–Schrieffer–Heeger (SSH) model with tunable inter- and intra-cell couplings.  The topologically trivial and non-trivial phases of the untilted SSH model manifest on the long-time dynamics of chiral-Bloch-oscillations, which can be accessed via Ramsey spectroscopy. This phase transition is closely related to the properties of the eigenstates of the tilted model which we analytically characterize. We discuss experimental protocols accessible in optical lattice clocks to observe the predicted behaviors.