Deterministic coupling of delta-doped NV centers to a nanobeam photonic crystal cavity

Abstract

The negatively-charged nitrogen vacancy center (NV) in diamond has generated significant interest as a platform for quantum information processing and sensing in the solid state. For most applications, high quality optical cavities are required to enhance the NV zero-phonon line (ZPL) emission. An outstanding challenge in maximizing the degree of NV-cavity coupling is the deterministic placement of NVs within the cavity. Here, we report photonic crystal nanobeam cavities coupled to NVs incorporated by a delta-doping technique that allows nanometer-scale vertical positioning of the emitters. We demonstrate cavities with Q up to ~24,000 and mode volume V ~ $0.47(\lambda /n{)}^3$ as well as resonant enhancement of the ZPL of an NV ensemble with Purcell factor of ~20. Our fabrication technique provides a first step towards deterministic NV-cavity coupling using spatial control of the emitters.

13 pages, 3 figures

References in corpus (5)

• Unconditional quantum teleportation between distant solid-state qubits
• Engineering shallow spins in diamond with nitrogen delta-doping
• Deterministic coupling of a single silicon-vacancy color center to a photonic crystal cavity in diamond
• Photonic nano-structures on (111) oriented diamond
• Three-dimensional localization of spins in diamond using 12C implantation

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• Quantum micro-nano devices fabricated in diamond by femtosecond laser and ion irradiation
• Predicted strong coupling of solid-state spins via a single magnon mode
• Novel color center platforms enabling fundamental scientific discovery
• Characterization of the recovery of mechanical properties of ion-implanted diamond after thermal annealing
• Scalable, nanoscale positioning of highly coherent color centers in prefabricated diamond nanostructures
• Quantum simulation of spin-1/2 XYZ model using solid-state spin centers