Zitterbewegung, a force-free trembling motion first predicted for relativistic fermions like electrons, was an unexpected consequence of the Dirac equation’s unification of quantum mechanics and special relativity. Though the oscillatory motion’s large frequency and small amplitude have precluded its measurement with electrons, zitterbewegung is …

Direct observation of zitterbewegung in a Bose–Einstein condensate Read more »

Citation:  For innovative and pioneering work in quantum phenomena at the intersection of atomic and condensed matter physics, using quantum simulation with ultracold atoms, including the use of optical interactions to create artificial electromagnetic fields and spin-orbit coupling.

The Aubry-André or Harper (AAH) model has been the subject of extensive theoretical research in the context of quantum localization. Recently, it was shown that one-dimensional quasicrystals described by the incommensurate AAH model has a nontrivial topology. In this Letter, …

Topological Zero-Energy Modes in Gapless Commensurate Aubry-André-Harper Models Read more »

An integrated optical dipole trap uses two-color (red and blue-detuned) traveling evanescent wave fields for trapping cold neutral atoms. To achieve longitudinal confinement, we propose using an integrated optical waveguide coupler, which provides a potential gradient along the beam propagation …

Integrated optical dipole trap for cold neutral atoms with an optical waveguide coupler Read more »

We consider a quantum quench in which two initially independent condensates are suddenly coupled and study the subsequent “rephasing” dynamics. For weak tunneling couplings, the time evolution of physical observables is predicted to follow universal scaling laws, connecting the short-time …

Universal Rephasing Dynamics after a Quantum Quench via Sudden Coupling of Two Initially Independent Condensates Read more »