Chip-integrated plasmonic cavity-enhanced single nitrogen-vacancy center emission

Abstract

High temporal stability and spin dynamics of individual nitrogen-vacancy (NV) centers in diamond crystals make them one of the most promising quantum emitters operating at room temperature. We demonstrate a chip-integrated cavity-coupled emission into propagating surface plasmon polariton (SPP) modes narrowing NV center's broad emission bandwidth with enhanced coupling efficiency. The cavity resonator consists of two distributed Bragg mirrors that are built at opposite sides of the coupled NV emitter and are integrated with a dielectric-loaded SPP waveguide (DLSPPW), using electron-beam lithography of hydrogen silsesquioxane resist deposited on silver-coated silicon substrates. A quality factor of ~ 70 for the cavity (full width at half maximum ~ 10 nm) with full tunability of the resonance wavelength is demonstrated. An up to 42-fold decay rate enhancement of the spontaneous emission at the cavity resonance is achieved, indicating high DLSPPW mode confinement.

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Cited by in corpus (8)

• On-chip excitation of single germanium-vacancies in nanodiamonds embedded in plasmonic waveguides
• Plasmon-enhanced generation of non-classical light
• Integrated Single Photon Emitters
• Observation of large spontaneous emission rate enhancement of quantum dots in a broken-symmetry slow-light waveguide
• Unidirectional single-photon emission from germanium-vacancy zero-phonon lines: Deterministic emitter-waveguide interfacing at plasmonic hot spots
• Strong tunable spin-spin interaction in a weakly coupled nitrogen vacancy spin-cavity electromechanical system
• Waveguide Excitation and Spin Pumping of Chirally Coupled Quantum Dots
• Deterministic coupling of a quantum emitter to surface plasmon polaritons, Purcell enhanced generation of indistinguishable single photons and quantum information processing