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Qudit Entanglers Using Quantum Optimal Control

https://doi.org/10.1103/PRXQuantum.4.040333

Omanakuttan, Sivaprasad; Mitra, Anupam; Meier, Eric J; Martin, Michael J; Deutsch, Ivan H (November 2023, PRX Quantum)

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Nonlinear Dynamics in a Synthetic Momentum-State Lattice

https://doi.org/10.1103/PhysRevLett.127.130401

An, Fangzhao Alex; Sundar, Bhuvanesh; Hou, Junpeng; Luo, Xi-Wang; Meier, Eric J.; Zhang, Chuanwei; Hazzard, Kaden R.; Gadway, Bryce (September 2021, Physical Review Letters)

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Interactions and Mobility Edges: Observing the Generalized Aubry-André Model

https://doi.org/10.1103/PhysRevLett.126.040603

An, Fangzhao Alex; Padavić, Karmela; Meier, Eric J.; Hegde, Suraj; Ganeshan, Sriram; Pixley, J. H.; Vishveshwara, Smitha; Gadway, Bryce (January 2021, Physical Review Letters)
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Exploring quantum signatures of chaos on a Floquet synthetic lattice

https://doi.org/10.1103/PhysRevA.100.013623

Meier, Eric J.; Ang'ong'a, Jackson; An, Fangzhao Alex; Gadway, Bryce (July 2019, Physical Review A)

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Engineering a Flux-Dependent Mobility Edge in Disordered Zigzag Chains

https://doi.org/10.1103/PhysRevX.8.031045

An, Fangzhao Alex; Meier, Eric J.; Gadway, Bryce (August 2018, Physical Review X)

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Observation of the topological Anderson insulator in disordered atomic wires

https://doi.org/10.1126/science.aat3406

Meier, Eric J.; An, Fangzhao Alex; Dauphin, Alexandre; Maffei, Maria; Massignan, Pietro; Hughes, Taylor L.; Gadway, Bryce (October 2018, Science)

Topology and disorder have a rich combined influence on quantum transport. To probe their interplay, we synthesized one-dimensional chiral symmetric wires with controllable disorder via spectroscopic Hamiltonian engineering, based on the laser-driven coupling of discrete momentum states of ultracold atoms. Measuring the bulk evolution of a topological indicator after a sudden quench, we observed the topological Anderson insulator phase, in which added disorder drives the band structure of a wire from topologically trivial to nontrivial. In addition, we observed the robustness of topologically nontrivial wires to weak disorder and measured the transition to a trivial phase in the presence of strong disorder. Atomic interactions in this quantum simulation platform may enable realizations of strongly interacting topological fluids.
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