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arXiv · 2606.02399

Optical Stability and Photophysics of NV Centers in Diamond up to 120 GPa

Kin On Ho·Cassandra Dailledouze·Vytautas Žalandauskas·Grégoire Le Caruyer·Marek Maciaszek·Claire Roussy·Marie-Pierre Adam·Martin Schmidt·Loïc Toraille·Paul Loubeyre·Lukas Razinkovas·Jean-François Roch
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Abstract

The nitrogen vacancy (NV) center has emerged as a powerful quantum sensor in high-pressure research, with the observation of optically detected magnetic resonance at megabar pressures. However, some aspects of NV physics require further investigation to optimize the development of NV-based sensing under pressure. Here, we study both experimentally and theoretically the optical properties of the NV center under hydrostatic pressure. We investigate the evolution of the zero-phonon line (ZPL) position, radiative lifetimes, optical lineshapes, and photoionization thresholds of the NV center under pressures up to ~120 GPa. We also provide spectroscopic guidelines for performing high-pressure optical experiments. Our results confirm that the NV center remains a robust quantum sensor under extreme hydrostatic pressures, especially for magnetic characterization.

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Kin On Ho, Cassandra Dailledouze, Vytautas Žalandauskas, Grégoire Le Caruyer, Marek Maciaszek, Claire Roussy, Marie-Pierre Adam, Martin Schmidt, Loïc Toraille, Paul Loubeyre, Lukas Razinkovas, Jean-François Roch. 2026-06-01. Optical Stability and Photophysics of NV Centers in Diamond up to 120 GPa. https://arxiv.org/abs/2606.02399

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