Guido van de Stolpe

All Publications

• Improved Electron-Nuclear Quantum Gates for Spin Sensing and Control PRX QUANTUM van Ommen, H. B., van de Stolpe, G. L., Demetriou, N., Beukers, H. C., Yun, J., Fortuin, T. J., Iuliano, M., Montblanch, A., Hanson, R., Taminiau, T. H. 2025; 6 (2)

  View details for DOI 10.1103/PRXQuantum.6.020309

  View details for Web of Science ID 001472004400001

• Check-probe spectroscopy of lifetime-limited emitters in bulk-grown silicon carbide NPJ QUANTUM INFORMATION van de Stolpe, G. L., Feije, L. J., Loenen, S. H., Das, A., Timmer, G. M., de Jong, T. W., Taminiau, T. H. 2025; 11 (1): 31

  Abstract

  Solid-state single-photon emitters provide a versatile platform for exploring quantum technologies such as optically connected quantum networks. A key challenge is to ensure the optical coherence and spectral stability of the emitters. Here, we introduce a high-bandwidth 'check-probe' scheme to quantitatively measure (laser-induced) spectral diffusion and ionisation rates, as well as homogeneous linewidths. We demonstrate these methods on single V2 centres in commercially available bulk-grown 4H-silicon carbide. Despite observing significant spectral diffusion under laser illumination (≳GHz s-1), the optical transitions are narrow (~35 MHz), and remain stable in the dark (≳1 s). Through Landau-Zener-Stückelberg interferometry, we determine the optical coherence to be near-lifetime limited (T 2 = 16.4(4) ns), hinting at the potential for using bulk-grown materials for developing quantum technologies. These results advance our understanding of spectral diffusion of quantum emitters in semiconductor materials, and may have applications for studying charge dynamics across other platforms.

  View details for DOI 10.1038/s41534-025-00985-3

  View details for Web of Science ID 001428617800001

  View details for PubMedID 39996104

  View details for PubMedCentralID PMC11846708