Floquet approach to Z2 lattice gauge theories

Nature Physics doi.org/10.1038/s41567-019-0649-7 (2019)

September 20, 2019

Nature Physics (2019)

Strongly-interacting gauge theories are extremely challenging to access with conventional numerical techniques. Here, we take a first step towards quantum simulation of gauge theories by implementing a Floquet-based method with two-component ultracold bosons in a double-well potential. For resonant periodic driving at the on-site interaction strength and an appropriate choice of the modulation parameters, the effective Floquet Hamiltonian exhibits Z2 symmetry. We study the dynamics of the system for different initial states, reveal challenges that arise due to symmetry-breaking terms and outline potential pathways to overcome them.

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