497 citations · 1.9k across the 14 of their papers we have counts for
14 papers
Spectroscopy of momentum state lattices
Sai Naga Manoj Paladugu, Tao Chen, Fangzhao Alex An +2
We explore a technique for probing energy spectra in synthetic lattices that is analogous to scanning tunneling microscopy. Using one-dimensional synthetic lattices of coupled atom…
High fidelity state preparation and measurement of ion hyperfine qubits with I > 1/2
Fangzhao Alex An, Anthony Ransford, Andrew Schaffer +4
We present a method for achieving high fidelity state preparation and measurement (SPAM) using trapped ion hyperfine qubits with nuclear spins higher than . The ground sta…
Nonlinear dynamics in a synthetic momentum state lattice
Fangzhao Alex An, Bhuvanesh Sundar, Junpeng Hou +5
The scope of analog simulation in atomic, molecular, and optical systems has expanded greatly over the past decades. Recently, the idea of synthetic dimensions -- in which transpor…
Observation of tunable mobility edges in generalized Aubry-André lattices
Fangzhao Alex An, Karmela Padavić, Eric J. Meier +5
Using synthetic lattices of laser-coupled atomic momentum modes, we experimentally realize a recently proposed family of nearest-neighbor tight-binding models having quasiperiodic…
Engineering tunable local loss in a synthetic lattice of momentum states
Samantha Lapp, Jackson Ang'ong'a, Fangzhao Alex An +1
Dissipation can serve as a powerful resource for controlling the behavior of open quantum systems.Recently there has been a surge of interest in the influence of dissipative coupli…
Observation of the topological Anderson insulator in disordered atomic wires
Eric J. Meier, Fangzhao Alex An, Alexandre Dauphin +4
Topology and disorder have deep connections and a rich combined influence on quantum transport. In order to probe these connections, we synthesized one-dimensional chiral symmetric…
Correlated dynamics in a synthetic lattice of momentum states
Fangzhao Alex An, Eric J. Meier, Jackson Ang'ong'a +1
We study the influence of atomic interactions on quantum simulations in momentum-space lattices (MSLs), where driven transitions between discrete momentum states mimic transport be…
Exploring quantum signatures of chaos on a Floquet synthetic lattice
Eric J. Meier, Jackson Ang'ong'a, Fangzhao Alex An +1
Ergodicity and chaos play an integral role in the dynamical behavior of many-particle systems and are crucial to the formulation of statistical mechanics. Still, a general understa…
Engineering a flux-dependent mobility edge in disordered zigzag chains
Fangzhao Alex An, Eric J. Meier, Bryce Gadway
There has been great interest in realizing quantum simulators of charged particles in artificial gauge fields. Here, we perform the first quantum simulation explorations of the com…
Interacting atomic quantum fluids on momentum-space lattices
Bryce Gadway, Fangzhao Alex An, Eric J. Meier +1
We study the influence of atomic interactions on quantum simulations in momentum-space lattices (MSLs), where driven atomic transitions between discrete momentum states mimic trans…
Ballistic, diffusive, and arrested transport in disordered momentum-space lattices
Fangzhao Alex An, Eric J. Meier, Bryce Gadway
Ultracold atoms in optical lattices offer a unique platform for investigating disorder-driven phenomena. While static disordered site potentials have been explored in a number of o…
Direct observation of chiral currents and magnetic reflection in atomic flux lattices
Fangzhao Alex An, Eric J. Meier, Bryce Gadway
The prospect of studying topological matter with the precision and control of atomic physics has driven the development of many techniques for engineering artificial magnetic field…
Observation of the topological soliton state in the Su-Schrieffer-Heeger model
Eric J. Meier, Fangzhao Alex An, Bryce Gadway
The Su-Schrieffer-Heeger (SSH) model, which captures the most striking transport properties of the conductive organic polymer -polyacetylene, provides perhaps the most basic…
Atom-optics simulator of lattice transport phenomena
Eric J. Meier, Fangzhao Alex An, Bryce Gadway
We experimentally investigate a scheme for studying lattice transport phenomena, based on the controlled momentum-space dynamics of ultracold atomic matter waves. In the effective…