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Trapped Ion Quantum Computing

Optically detected magnetic resonance of nitrogen-vacancy centers in diamond using two-photon excitation

arXiv
Authors: Lam T. Nguyen, Khanh Kieu

Year

2026

Paper ID

52483

Status

Preprint

Abstract Read

~2 min

Abstract Words

102

Citations

N/A

Abstract

We demonstrate the use of two-photon excitation for observing the ground state optically detected magnetic resonance (ODMR) of nitrogen-vacancy centers in diamonds at room temperature. An ultrafast femtosecond laser at 1040 nm was used for excitation, while fluorescence signal read out was achieved through a combination of a PMT and a lock-in amplifier. The imaging capability of two-photon excitation fluorescence (2PEF) was utilized to map the distribution of NV centers in a bulk diamond and micro-sized diamonds. For the first time, ODMR traces of the nitrogen-vacancy center are observed with two-photon excitation, providing a promising tool for fast 3D quantum sensing and imaging.

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  • We demonstrate the use of two-photon excitation for observing the ground state optically detected magnetic resonance (ODMR) of nitrogen-vacancy centers in diamonds at room...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2604.15755 [2] arXiv https://arxiv.org/abs/2604.15755 [3] Publisher https://arxiv.org/abs/2604.15755

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