Telecom-Wavelength-Compatible Quantum Information Transcription Using Nitrogen-Vacancy Centers
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arXiv
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2026
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| author | Göblyös, B. Kollarics, S. Kucsera, R. Plitt, D. Koltai, K. Márkus, B. G. Forró, L. Simon, F. |
| author_facet | Göblyös, B. Kollarics, S. Kucsera, R. Plitt, D. Koltai, K. Márkus, B. G. Forró, L. Simon, F. |
| contents | Nitrogen-vacancy (NV) centers in diamond are a leading platform for solid-state quantum sensing and quantum information processing. While most optical studies rely on the visible fluorescence associated with the triplet transitions, the infrared singlet transition near $1042$ nm, which is typically considered dark within the singlet manifold of the NV optical cycle, provides an alternative optical channel. Here, we report wavelength-resolved optically detected magnetic resonance (ODMR) measurements of this infrared emission. We directly observe ODMR contrast in the $1042$ nm emission and analyze its dependence on the magnetic field. The field-dependent spectral dispersion of the ODMR signal demonstrates that the spin-state information encoded in the NV center is transcribed to the infrared singlet emission through the spin-selective intersystem crossing, in close analogy to the visible fluorescence readout. These results establish infrared ODMR as a high-fidelity optical readout pathway. Crucially, by extending spin-state transcription directly into the $1300-1600$ nm range, this work demonstrates a direct, conversion-free interface between diamond spin-qubits and standard telecommunication infrastructure, bypassing the efficiency bottlenecks of active frequency conversion and benefiting from the already well-developed technologies in this range of the electromagnetic spectrum. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_14697 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Telecom-Wavelength-Compatible Quantum Information Transcription Using Nitrogen-Vacancy Centers Göblyös, B. Kollarics, S. Kucsera, R. Plitt, D. Koltai, K. Márkus, B. G. Forró, L. Simon, F. Materials Science Quantum Physics Nitrogen-vacancy (NV) centers in diamond are a leading platform for solid-state quantum sensing and quantum information processing. While most optical studies rely on the visible fluorescence associated with the triplet transitions, the infrared singlet transition near $1042$ nm, which is typically considered dark within the singlet manifold of the NV optical cycle, provides an alternative optical channel. Here, we report wavelength-resolved optically detected magnetic resonance (ODMR) measurements of this infrared emission. We directly observe ODMR contrast in the $1042$ nm emission and analyze its dependence on the magnetic field. The field-dependent spectral dispersion of the ODMR signal demonstrates that the spin-state information encoded in the NV center is transcribed to the infrared singlet emission through the spin-selective intersystem crossing, in close analogy to the visible fluorescence readout. These results establish infrared ODMR as a high-fidelity optical readout pathway. Crucially, by extending spin-state transcription directly into the $1300-1600$ nm range, this work demonstrates a direct, conversion-free interface between diamond spin-qubits and standard telecommunication infrastructure, bypassing the efficiency bottlenecks of active frequency conversion and benefiting from the already well-developed technologies in this range of the electromagnetic spectrum. |
| title | Telecom-Wavelength-Compatible Quantum Information Transcription Using Nitrogen-Vacancy Centers |
| topic | Materials Science Quantum Physics |
| url | https://arxiv.org/abs/2605.14697 |