Prospects for observing dynamical and anti- dynamical Casimir effects in circuit QED due to fast modulation of qubit parameters

TL;DR

This paper explores the potential to observe dynamical and anti-dynamical Casimir effects in circuit QED systems through rapid modulation of qubit parameters, analyzing dissipation effects with advanced models.

Contribution

It compares standard and dressed-picture master equations to estimate transition rates, demonstrating feasibility of observing DCE and Anti-DCE with current technology.

Findings

Photon generation from vacuum is achievable.

Anti-DCE can occur with existing parameters.

Dissipation effects are quantitatively analyzed.

Abstract

We consider the nonstationary circuit QED architecture, where a single artificial two-level atom interacts with a cavity field mode under external modulation of one or more system parameters. Two different approaches are employed to study the effects of Markovian dissipation on modulation-induced transitions between the atom-field dressed states: the standard master equation of Quantum Optics and the recently formulated dressed-picture master equation. We estimate the associated transition rates and show that photon generation from vacuum ("dynamical Casimir effect", DCE) and coherent photon annihilation from nonvacuum states ("Anti-DCE") are possible with the current state-of-the-art parameters.