Periodic driving induced helical Floquet channels with ultracold atoms in momentum space

Abstract

Employing the external degrees of freedom of atoms as synthetic dimensions renders easy and new accesses to quantum engineering and quantum simulation. As a recent development, ultracold atoms suffering from two-photon Bragg transitions can be diffracted into a series of discrete momentum states to form a momentum lattice. Here we provide a detailed analysis on such a system, and, as a concrete example, report the observation of robust helical Floquet channels, by introducing periodic driving sequences. The robustness of these channels against perturbations is confirmed, as a test for their topological origin captured by Floquet winding numbers. The periodic switching demonstrated here serves as a testbed for more complicated Floquet engieering schemes, and offers exciting opportunities to study novel topological physics in a many-body setting with tunable interactions.

partial overlap with the last section of arxiv:1906.12016V1, which was left out of the published version

References in corpus (14)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
• Topological characterization of periodically-driven quantum systems
• Supersolid formation in a quantum gas breaking continuous translational symmetry
• Photonic topological pumping through the edges of a dynamical four-dimensional quantum Hall system
• Topological quantum matter in synthetic dimensions
• Synthetic dimensions and spin-orbit coupling with an optical clock transition
• An Aharonov-Bohm interferometer for determining Bloch band topology
• Tunable non-reciprocal quantum transport through a dissipative Aharonov-Bohm ring in ultracold atoms
• Atomic quantum simulator for lattice gauge theories and ring exchange models
• Topological characterizations of an extended Su-Schrieffer-Heeger model
• Creation, manipulation, and detection of Abelian and non-Abelian anyons in optical lattices
• Digital atom interferometer with single particle control on a discretized spacetime geometry
• Helical Floquet Channels in 1D Lattices

Cited by in corpus (6)

• A comprehensive review on developments of synthetic dimensions
• Nonlinear dynamics in a synthetic momentum state lattice
• Chiral Dynamics of Ultracold Atoms under a Tunable SU(2) Synthetic Gauge Field
• Floquet engineering topological Dirac bands
• Entanglement phase transitions in non-Hermitian Floquet systems
• Synthetic topology and Floquet dynamic quantum phase transition in a periodically driven Raman lattice