Protecting qubit coherence by spectrally engineered driving of the spin environment
Quantum Physics
2021-01-26 v1
Abstract
Modern quantum technologies rely crucially on techniques to mitigate quantum decoherence; these techniques can be either passive, achieved for example via materials engineering, or active, typically achieved via pulsed monochromatic driving fields applied to the qubit. Using a solid-state defect spin coupled to a microwave-driven spin bath, we experimentally demonstrate a decoherence mitigation method based on spectral engineering of the environmental noise with a polychromatic drive waveform, and show that it outperforms monochromatic techniques. Results are in agreement with quantitative modeling, and open the path to active decoherence protection using custom-designed waveforms applied to the environment rather than the qubit.
Keywords
Cite
@article{arxiv.2101.09654,
title = {Protecting qubit coherence by spectrally engineered driving of the spin environment},
author = {Maxime Joos and Dolev Bluvstein and Yuanqi Lyu and David M. Weld and Ania Bleszynski Jayich},
journal= {arXiv preprint arXiv:2101.09654},
year = {2021}
}