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Issue 45, 2017
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Chip-integrated plasmonic cavity-enhanced single nitrogen-vacancy center emission

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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 the 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.

Graphical abstract: Chip-integrated plasmonic cavity-enhanced single nitrogen-vacancy center emission

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Publication details

The article was received on 01 Aug 2017, accepted on 18 Oct 2017 and first published on 20 Oct 2017


Article type: Paper
DOI: 10.1039/C7NR05675C
Citation: Nanoscale, 2017,9, 17902-17908
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    Chip-integrated plasmonic cavity-enhanced single nitrogen-vacancy center emission

    H. Siampour, S. Kumar and S. I. Bozhevolnyi, Nanoscale, 2017, 9, 17902
    DOI: 10.1039/C7NR05675C

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