An effective spin-1 Heisenberg chain in coupled cavities

TL;DR

This paper demonstrates how a coupled cavity array with five-level atoms can simulate an effective spin-1 Heisenberg model, with tunable parameters via laser fields, offering a controllable quantum simulation platform.

Contribution

It introduces a method to realize an effective spin-1 Heisenberg model using coupled cavities with five-level atoms, enabling tunable interactions.

Findings

Atoms effectively simulate spin-1 Heisenberg interactions

Parameters of the effective Hamiltonian are controllable via laser tuning

Potential for quantum simulation of spin systems

Abstract

A coupled array of $N$ identical cavities, each of which contains a five-level atom is investigated. The results show that the atoms via the exchange of virtual photons can be effectively equal to spin 1 Heisenberg model under certain conditions. By tuning the laser fields, the parameters of the effective Hamiltonian can be controlled individually.