Stroboscopic Generation of Topological Protection

TL;DR

This paper introduces a stroboscopic method for engineering complex many-body Hamiltonians, like the toric code, in neutral atom systems, enabling robust quantum information storage through topological protection.

Contribution

It proposes a novel stroboscopic scheme using only 1- and 2-body operations and dissipation to realize topologically protected Hamiltonians in neutral atom setups.

Findings

Successfully demonstrates realization of the toric code Hamiltonian.

Enables thermalization or cooling to the ground state of complex Hamiltonians.

Provides a pathway for robust quantum memory in neutral atom systems.

Abstract

Trapped neutral atoms offer a powerful route to robust simulation of complex quantum systems. We present here a stroboscopic scheme for realization of a Hamiltonian with $n$-body interactions on a set of neutral atoms trapped in an addressable optical lattice, using only 1- and 2-body physical operations together with a dissipative mechanism that allows thermalization to finite temperature or cooling to the ground state. We demonstrate this scheme with application to the toric code Hamiltonian, ground states of which can be used to robustly store quantum information when coupled to a low temperature reservoir.