Competition between electric field and magnetic field noise in the decoherence of a single spin in diamond
P. Jamonneau, M. Lesik, J. P. Tetienne, I. Alvizu, L. Mayer, A., Dr\'eau, S. Kosen, J.-F. Roch, S. Pezzagna, J. Meijer, T. Teraji, Y. Kubo, P., Bertet, J. R. Maze, and V. Jacques
TL;DR
This paper investigates how electric and magnetic field noise compete to cause decoherence in a single NV center in diamond, providing insights crucial for quantum sensing technologies.
Contribution
It introduces a method to engineer spin states that are selectively protected against either electric or magnetic noise, and analyzes their competition quantitatively.
Findings
Electric and magnetic noise sources compete in decoherence processes.
Environmental modifications can tune the dominance of each noise source.
Results inform strategies for enhancing quantum sensor coherence.
Abstract
We analyze the impact of electric field and magnetic field fluctuations in the decoherence of the electronic spin associated with a single nitrogen-vacancy (NV) defect in diamond by engineering spin eigenstates protected either against magnetic noise or against electric noise. The competition between these noise sources is analyzed quantitatively by changing their relative strength through modifications of the environment. This study provides significant insights into the decoherence of the NV electronic spin, which is valuable for quantum metrology and sensing applications.
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