Unraveling quantum dephasing of nitrogen-vacancy center ensembles in diamond
Abstrak
Abstract Nitrogen-vacancy (NV) center ensembles in diamond are one of the most promising solid-state quantum platforms for various sensing applications. Achieving ultimate sensitivity requires simultaneously long spin dephasing times ( $${T}_{2}^{* }$$ T 2 * ) and high NV center concentrations. In this work, we propose a systematic measurement approach to quantify the electron spin dephasing in NV center ensembles and analyze the contributions of various sources to the dephasing time, including NV-NV interactions, strain and electric field distributions, 13C nuclear spins, and P1 electron spins. Our method is validated using a series of high-performance diamond samples, providing a comprehensive understanding of dephasing mechanisms and revealing correlations between NV concentration and different dephasing sources. Building on these insights, we outline strategies to further enhance the achievable sensitivity for DC magnetic field measurements.
Topik & Kata Kunci
Penulis (19)
Jixing Zhang
Cheuk Kit Cheung
Michael Kübler
Magnus Benke
Mathis Brossaud
Yihua Wang
Andrej Denisenko
Ruoming Peng
Jens Anders
Emilio Corcione
Cristina Tarín Sauer
Andrew M. Edmonds
Matthew Markham
Kazuo Nakamura
Hitoshi Sumiya
Shinobu Onoda
Junichi Isoya
Chen Zhang
Jörg Wrachtrup
Akses Cepat
- Tahun Terbit
- 2026
- Sumber Database
- DOAJ
- DOI
- 10.1038/s41535-026-00869-5
- Akses
- Open Access ✓