Long-lasting hybrid quantum information processing in a cavity-protection regime
Alessandro Chiesa, Paolo Maria Santini, Dario Gerace, Stefano Carretta · Physical review. B./Physical review. B · 2016
Implementing complex sequences of gates is crucial for any quantum computing architecture to become practical. This requires long-lived qubits which can be manipulated many times without errors. Here we propose a scheme to process hybrid qubits consisting of spin ensembles coupled to superconducting resonators in a cavity-protection regime, which enhances their coherence time by orders of magnitude. We perform numerical experiments for the quantum simulation of the $XY$ model and the quantum Fourier transform, by including all the main decoherence mechanisms and assuming system parameters that are guaranteed by present technology.