A low-loss, broadband antenna for efficient photon collection from a coherent spin in diamond

Abstract

We report the creation of a low-loss, broadband optical antenna giving highly directed output from a coherent single spin in the solid-state. The device, the first solid-state realization of a dielectric antenna, is engineered for individual nitrogen vacancy (NV) electronic spins in diamond. We demonstrate a directionality close to 10. The photonic structure preserves the high spin coherence of single crystal diamond (T2>100us). The single photon count rate approaches a MHz facilitating efficient spin readout. We thus demonstrate a key enabling technology for quantum applications such as high-sensitivity magnetometry and long-distance spin entanglement.

5 pages, 4 figures and supplementary information (5 pages, 8 figures). Comments welcome. Further information under http://www.quantum-sensing.physik.unibas.ch

References in corpus (7)

• Engineering shallow spins in diamond with nitrogen delta-doping
• Resonant addressing and manipulation of silicon vacancy qubits in silicon carbide
• Polarization-selective excitation of N-V centers in diamond
• Nano-fabricated solid immersion lenses registered to single emitters in diamond
• Integrated Diamond Optics for Single Photon Detection
• Coupling of nitrogen-vacancy centers in diamond to a GaP waveguide
• Photonic nano-structures on (111) oriented diamond

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• Nanoscale Sensing Using Point Defects in Single-Crystal Diamond: Recent Progress on Nitrogen Vacancy Center-Based Sensors
• Pump-Enhanced Continuous-Wave Magnetometry using Nitrogen-Vacancy Ensembles
• Cavity-enhanced Raman scattering for in situ alignment and characterization of solid-state microcavities
• Nitrogen-Vacancy Ensemble Magnetometry Based on Pump Absorption
• A cavity-based optical antenna for color centers in diamond
• Diamond spin sensors: A new way to probe nanomagnetism