Events

Seminar of Physics at Wrocław University of Technology

Hybrid, spin-based quantum photonics with SiV- center in nanodiamonds

Prof. Alexander Kubanek

University Ulm, Ulm, Germany

Spin-based quantum photonics enables scalable approaches to solid-state quantum technology, in particular quantum repeater and quantum networks. Color centers in diamond provide a coherent interface between photons and long-lived spins, ideal for its use in quantum photonics.

In my talk, I will present our approach towards hybrid quantum photonics based on color centers in nanodiamonds. I elaborate on the fabrication of single, spectrally stable color centers in nanodiamonds, their precise nanomanipulation, and the construction of different hybrid quantum photonics platforms. Using Purcell amplification, we realize efficient spin-photon interfaces that enable the construction of complex quantum systems. The electron-phonon interaction provides an important tool to enhance the coherence properties and to increase the operating temperature.

If time permits, I will discuss our recent developments on defect centers in hexagonal boron nitride and their use in coherent quantum photonics at room temperature.

References

[1] N. Lettner et al., ACS Photonics (2024)

[2] F. Feuchtmayr et al., Applied Physics Letters 123 (2) (2023)

[3] L. Antoniuk et al., arXiv preprint arXiv:2308.15544 (2023)

[4] G. Bayer et al., Communications Physics 6 (1), 300 (2023)

[5] R. Waltrich, et al., Nanophotonics 12(18): 3663–3669 (2023)

[6] A. Kubanek et al., Progress in Nanophotonics 7, 123-174 (2022)

[7] M. Klotz et al., Physical Review Letters 128 (15), 153602 (2022)

[8] K. G. Fehler, et al., ACS Photonics 8, 9, 2635-2641 (2021)

[9] K. G. Fehler, et al., Nanophotonics 20200257 (2020)

[10] S. Häußler, et al., New Journal of Physics 21, 103047 (2019)