Hybrid Quantum Systems with Collectively Coupled Spin States: Suppression of Decoherence through Spectral Hole Burning

Abstract

Spin ensemble based hybrid quantum systems suffer from a significant degree of decoherence resulting from the inhomogeneous broadening of the spin transition frequencies in the ensemble. We demonstrate that this strongly restrictive drawback can be overcome simply by burning two narrow spectral holes in the spin spectral density at judiciously chosen frequencies. Using this procedure we find an increase of the coherence time by more than an order of magnitude as compared to the case without hole burning. Our findings pave the way for the practical use of these hybrid quantum systems for the processing of quantum information.

arXiv comment5 pages, 4 figures

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• Dynamics of mesoscopic qubit ensemble coupled to cavity: role of collective dark states
• Topologically protected subradiant cavity polaritons through linewidth narrowing enabled by dissipationless edge states
• Suppressing Decoherence in Quantum Plasmonic Systems by Spectral Hole Burning Effect
• Optimal control of non-Markovian dynamics in a single-mode cavity strongly coupled to an inhomogeneously broadened spin ensemble
• Protecting information in a parametrically driven hybrid quantum system