Engineering Anisotropic Rabi Model in Circuit QED

TL;DR

This paper introduces a circuit QED setup that allows precise control over the anisotropic Rabi model's parameters, enabling exploration of its full range and enhancing quantum measurement techniques.

Contribution

The work demonstrates a novel circuit QED implementation that geometrically tunes the ARM from JC to AJC interactions, facilitating new quantum measurement methods.

Findings

Achieved static control over ARM parameters in circuit QED.

Enabled dispersive shift cancellation and Purcell-suppressed readout.

Provided a platform for full exploration of the ARM in quantum information.

Abstract

The anisotropic Rabi model (ARM), which features tunable Jaynes-Cummings (JC) and anti-Jaynes-Cummings (AJC) interactions, has remained challenging to realize fully. We present a circuit QED implementation that provides static control over the ARM parameters. By simultaneously coupling a qubit to a resonator's voltage and current antinodes, we geometrically tune the interaction from pure JC to pure AJC. This control enables novel quantum measurement capabilities, including dispersive shift cancellation and Purcell-suppressed readout. Our work establishes a direct platform for exploring the ARM's full parameter space and its applications in quantum information processing.