Enhanced magnetic field sensitivity of shallow NV$^-$ ensembles via high-temperature implantation
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866909774273052672 |
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| author | Yahya, Joa Al Bach, Anatole Panigrahi, Jayash Perrin, Pauline Balasa, Ionut Serrano, Diana Tiranov, Alexey Achard, Jocelyn Tallaire, Alexandre Goldner, Philippe |
| author_facet | Yahya, Joa Al Bach, Anatole Panigrahi, Jayash Perrin, Pauline Balasa, Ionut Serrano, Diana Tiranov, Alexey Achard, Jocelyn Tallaire, Alexandre Goldner, Philippe |
| contents | Dense and shallow ensembles of negatively charged nitrogen-vacancy centers (NV$^-$) with good optical and spin properties play a key role in the performance enhancement of diamond-based quantum sensors. Ion implantation enables precise control of NV$^-$ depth and density. However, at high ion fluence, this method is limited by low NV$^-$ creation yields and sample amorphization. Additionally, shallow NV$^-$ spin properties deteriorate due to surface proximity. In this paper, we study N$_2^+$ ion implantation at energies between 10 and 15 keV with fluences as high as 1e15 ions/cm2 at temperatures of 20, 400 and 800°C to investigate the influence of implantation temperature on lattice damage, NV$^-$ creation yield and NV$^-$ spin properties. Our results show that diamond maintains structural integrity at 800°C with fluences up to 1e15 ions/cm2 without amorphization. Furthermore, high-temperature implantation improves NV$^-$ creation yields up to five times without compromising T2$^*$, T2 and T1, making it a promising approach to enhance the magnetic field sensitivity of NV$^-$ ensembles. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2509_05647 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Enhanced magnetic field sensitivity of shallow NV$^-$ ensembles via high-temperature implantation Yahya, Joa Al Bach, Anatole Panigrahi, Jayash Perrin, Pauline Balasa, Ionut Serrano, Diana Tiranov, Alexey Achard, Jocelyn Tallaire, Alexandre Goldner, Philippe Quantum Physics Dense and shallow ensembles of negatively charged nitrogen-vacancy centers (NV$^-$) with good optical and spin properties play a key role in the performance enhancement of diamond-based quantum sensors. Ion implantation enables precise control of NV$^-$ depth and density. However, at high ion fluence, this method is limited by low NV$^-$ creation yields and sample amorphization. Additionally, shallow NV$^-$ spin properties deteriorate due to surface proximity. In this paper, we study N$_2^+$ ion implantation at energies between 10 and 15 keV with fluences as high as 1e15 ions/cm2 at temperatures of 20, 400 and 800°C to investigate the influence of implantation temperature on lattice damage, NV$^-$ creation yield and NV$^-$ spin properties. Our results show that diamond maintains structural integrity at 800°C with fluences up to 1e15 ions/cm2 without amorphization. Furthermore, high-temperature implantation improves NV$^-$ creation yields up to five times without compromising T2$^*$, T2 and T1, making it a promising approach to enhance the magnetic field sensitivity of NV$^-$ ensembles. |
| title | Enhanced magnetic field sensitivity of shallow NV$^-$ ensembles via high-temperature implantation |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2509.05647 |