Effects of lasing in a one-dimensional quantum metamaterial

TL;DR

This paper demonstrates through numerical simulation that lasing occurs in a one-dimensional quantum metamaterial based on superconducting qubits, leading to chaotic qubit states and harmonic generation, which can aid in device characterization.

Contribution

It introduces the first numerical evidence of lasing in a quantum metamaterial with superconducting qubits, highlighting new phenomena and potential applications.

Findings

Lasing is triggered in the quantum metamaterial.

Qubit states become chaotized during lasing.

Higher harmonics are generated during the process.

Abstract

Electromagnetic pulse propagation in a quantum metamaterial - artificial, globally quantum coherent optical medium - is numerically simulated. We show that for the quantum metamaterials based on superconducting quantum bits, initialized in an easily reachable factorized state, lasing in microwave range is triggered, accompanied by the chaotization of qubit states and generation of higher harmonics. These effects may provide a tool for characterization and optimization of quantum metamaterial prototypes.