Protecting information in a parametrically driven hybrid quantum system

TL;DR

This paper demonstrates a quantum system where information transfer and storage are protected from inhomogeneity-induced decoherence using a variational renormalization group approach.

Contribution

It introduces a method to safeguard quantum information in hybrid systems with inhomogeneous spins through parametric driving and quantum treatment.

Findings

Quantum information is strongly protected against decoherence.

The approach effectively mitigates inhomogeneity effects.

The method enhances coherence in hybrid quantum systems.

Abstract

The transfer and storage of quantum information in a hybrid quantum system, consisting of an ensemble of atoms or spins interacting with a cavity, is adversely affected by the inhomogeneity of the spins, which negates the coherent exchange of excitations between the physical components. Using a full quantum treatment based on variational renormalization group, we show how quantum information encoded in the states of a parametrically driven hybrid system is strongly protected against any decoherence that may arise due to the inhomogeneity in the spin-ensemble.