Coherent Coupling of a Diamond Tin-Vacancy Center to a Tunable Open Microcavity
Yanik Herrmann (TU Delft - QID/Hanson Lab, Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre)
Julius Fischer (Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre, TU Delft - QID/Hanson Lab)
Julia M. Brevoord (TU Delft - QID/Hanson Lab, TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft)
Colin Sauerzapf (TU Delft - QuTech Advanced Research Centre, TU Delft - QID/Hanson Lab, Kavli institute of nanoscience Delft)
Leonardo G.C. Wienhoven (Kavli institute of nanoscience Delft, Student TU Delft)
L.J. Feije (TU Delft - QID/Taminiau Lab, Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre)
Matteo Pasini (TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft, TU Delft - QID/Hanson Lab)
Martin Eschen (Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre, TU Delft - BUS/TNO STAFF)
M.T. Ruf (TU Delft - QuTech Advanced Research Centre, TU Delft - QID/Hanson Lab, Kavli institute of nanoscience Delft)
Matthew J. Weaver (TU Delft - QN/Afdelingsbureau, TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft)
R. Hanson (TU Delft - QID/Hanson Lab, TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft, TU Delft - QN/Hanson Lab)
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Abstract
Efficient coupling of optically active qubits to optical cavities is a key challenge for solid-state-based quantum optics experiments and future quantum technologies. Here we present a quantum photonic interface based on a single tin-vacancy center in a micrometer-thin diamond membrane coupled to a tunable open microcavity. We use the full tunability of the microcavity to selectively address individual tin-vacancy centers within the cavity mode volume. Purcell enhancement of the tin-vacancy center optical transition is evidenced both by optical excited state lifetime reduction and by optical linewidth broadening. As the emitter selectively reflects the single-photon component of the incident light, the coupled emitter-cavity system exhibits strong quantum nonlinear behavior. On resonance, we observe a transmission dip of 50% for low incident photon number per Purcell-reduced excited state lifetime, while the dip disappears as the emitter is saturated with higher photon number. Moreover, we demonstrate that the emitter strongly modifies the photon statistics of the transmitted light by observing photon bunching. This work establishes a versatile and tunable platform for advanced quantum optics experiments and proof-of-principle demonstrations on quantum networking with solid-state qubits.
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