Efficient spin-photon interfaces based on color center in diamond

Efficient spin-photon interfaces are essential for applications like quantum repeaters and quantum networks. We employ quantum interference of indistinguishable single photons as a resource for entanglement generation between remote spin systems. We utilize macroscopic solid immersion lenses and optical Fabry-Perot resonators for improved efficiency to realize scalable platforms with high connectivity and high photon generation rates.

Selected references:

H. Siampour et al., Unidirectional single-photon emission from germanium-vacancy zero-phonon lines: Deterministic emitter-waveguide interfacing at plasmonic hot spots. arXiv:1903.05446 (2019)

S. Häußler et al., Diamond-Photonics Platform Based on Silicon-Vacancy Centers in a Single Crystal Diamond Membrane and a Fiber Cavity. Physical Review B 99, 165310 (2019)

A. Sipahigil, et al., „Quantum interference of single photons from remote nitrogen-vacancy centers in diamond. Physical Review Letters 108, 143601 (2012)