Robust GHz-range AC Magnetometry with an ensemble of NV Centers in Diamond using Concatenated Continuous Dynamical Decoupling
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918167188602880 |
|---|---|
| author | Kitamura, Takuya Genov, Genko Salhov, Alon Kobayashi, Yutaka Onoda, Shinobu Isoya, Junichi Retzker, Alex Jelezko, Fedor |
| author_facet | Kitamura, Takuya Genov, Genko Salhov, Alon Kobayashi, Yutaka Onoda, Shinobu Isoya, Junichi Retzker, Alex Jelezko, Fedor |
| contents | Sub-picotesla level magnetometry has been demonstrated using negatively-charged nitrogen-vacancy (NV) centers in diamond by increasing the number of spins simultaneously used for sensing in an NV ensemble. However, such scale-up often introduces spatial inhomogeneities in detuning and control field amplitudes, which degrade sensitivity. Although several techniques have been utilized to overcome these challenges, including pulsed dynamical decoupling or shaped pulses, these are not generally compatible with the current state-of-the-art techniques for GHz-range AC magnetometry with NV ensembles, which are typically based on Rabi oscillations. In this work we experimentally demonstrate GHz-range AC magnetometry using a large ensemble of NV centers under spatially inhomogeneous drive fields by employing concatenated continuous dynamical decoupling, which is designed for robustness against such imperfections. We compare its performance with the conventional direct Rabi method and show that the robust dressed states in our method extend significantly the measuring range to weaker signals in GHz-range AC magnetometry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_20401 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Robust GHz-range AC Magnetometry with an ensemble of NV Centers in Diamond using Concatenated Continuous Dynamical Decoupling Kitamura, Takuya Genov, Genko Salhov, Alon Kobayashi, Yutaka Onoda, Shinobu Isoya, Junichi Retzker, Alex Jelezko, Fedor Quantum Physics Sub-picotesla level magnetometry has been demonstrated using negatively-charged nitrogen-vacancy (NV) centers in diamond by increasing the number of spins simultaneously used for sensing in an NV ensemble. However, such scale-up often introduces spatial inhomogeneities in detuning and control field amplitudes, which degrade sensitivity. Although several techniques have been utilized to overcome these challenges, including pulsed dynamical decoupling or shaped pulses, these are not generally compatible with the current state-of-the-art techniques for GHz-range AC magnetometry with NV ensembles, which are typically based on Rabi oscillations. In this work we experimentally demonstrate GHz-range AC magnetometry using a large ensemble of NV centers under spatially inhomogeneous drive fields by employing concatenated continuous dynamical decoupling, which is designed for robustness against such imperfections. We compare its performance with the conventional direct Rabi method and show that the robust dressed states in our method extend significantly the measuring range to weaker signals in GHz-range AC magnetometry. |
| title | Robust GHz-range AC Magnetometry with an ensemble of NV Centers in Diamond using Concatenated Continuous Dynamical Decoupling |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2510.20401 |