Math Physics Seminar

Speaker: 
Yannick Meurice
Topic: 
Quantum simulating the compact Abelian Higgs model with qutrits

Abstract:

The lattice compact Abelian Higgs model is a non-perturbative regularized formulation of low-energy scalar quantum electrodynamics. In 1+1 dimensions, this model can be quantum simulated using a ladder-shaped optical lattice with Rydberg-dressed atoms. In this setup, one spatial dimension is used to carry the angular momentum of the quantum rotors.

One can use truncations corresponding to spin-2 and spin-1 to build local Hilbert spaces associated with the links of the lattice.

We argue that ladder-shaped configurable arrays of Rydberg atoms can be used for the same purpose. We make concrete proposals involving two and three Rydberg atoms to build one local spin-1 space (a qutrit).

We show that the building blocks of the Hamiltonian calculations are models with one and two spins.

We compare target and simulators using perturbative and numerical methods. The two-atom setup provides an easily controllable simulator of the one-spin model while the three-atom setup involves solving nonlinear equations.  We discuss approximate methods to couple two spin-1 spaces.

Event Date: 
September 14, 2021 - 2:30pm to 3:20pm
September 21, 2021 - 2:30pm to 3:20pm
Location: 
VAN 309 or Online (See URL)
Calendar Category: 
Seminar
Seminar Category: 
Mathematical Physics