ChemInform Abstract: Diamond‐based Structures to Collect and Guide Light

Castelletto, Stefania; Harrison, J. P.; Marseglia, Luca; Stanley-Clarke, A. C.; Gibson, BC; Fairchild, Barbara A.; Hadden, J. P.; Ho, Y.-L. D.; Hiscocks, Mark P.; Ganesan, Kumaravelu

doi:10.1002/chin.201147216

Cited by 2 publications

(2 citation statements)

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“…Waveguides and other planar photonic structures in diamond have previously been demonstrated within membranes produced using ion implantation assisted lift off methods 4 , plasma etching 5 , or with under cutting performed through focused ion beam milling 6 , angled reactive ion etching 7 , or quasi-isotropic etching 8 . However these techniques are restricted to 2D geometries, and up to now device lengths of up to ∼100 µm.…”

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confidence: 99%

Integrated waveguides and deterministically positioned nitrogen vacancy centers in diamond created by femtosecond laser writing

Hadden¹,

Bharadwaj²,

Sotillo³

et al. 2018

Opt. Lett.

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Diamond's nitrogen vacancy (NV) center is an optically active defect with long spin coherence times, showing great potential for both efficient nanoscale magnetometry and quantum information processing schemes. Recently, both the formation of buried 3D optical waveguides and high-quality single NVs in diamond were demonstrated using the versatile femtosecond laser-writing technique. However, until now, combining these technologies has been an outstanding challenge. In this Letter, we fabricate laser-written photonic waveguides in quantum grade diamond which are aligned to within micron resolution to single laser-written NVs, enabling an integrated platform providing deterministically positioned waveguide-coupled NVs. This fabrication technology opens the way toward on-chip optical routing of single photons between NVs and optically integrated spin-based sensing.

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confidence: 99%

Integrated waveguides and deterministically positioned nitrogen vacancy centers in diamond created by femtosecond laser writing

Hadden¹,

Bharadwaj²,

Sotillo³

et al. 2018

Opt. Lett.

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“…In addition, in a recent work, the effect of the morphology of nanowire on the single photon collection efficiency enhancement is reported on nanowire of conic shape, a net photon flux exceeds 1.5 × 10 6 /s was achieved [25]. Nevertheless, optimized fabrication approach for large scale diamond micro-/nanostructures with tunable geometry, size and distribution is still highly demanded [26].…”

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confidence: 99%

Large scale fabrication of nitrogen vacancy-embedded diamond nanostructures for single-photon source applications

Jiang

Tang

et al. 2016

Chinese Phys. B

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Color centers in diamond are prominent candidates to generate and manipulate quantum states of light, even at room temperature. However, the efficiency of photon collection efficiency in bulk diamond is greatly reduced by the refraction at diamond/air interface. To address this issue, arrays of diamond nanostructures of different diameters and top end shapes have been fabricated with HSQ, PMMA and Cr as the etching masks, towards large scale fabrication of nitrogen vacancy (NV) embedded diamond single photon sources with enhanced collection efficiency. With mixture of O 2 and CHF 3 gas plasma, diamond pillars with diameter down to 45 nm have been achieved. The top end shape evolution has also been traced with a simple model. The tests of size dependent single photon properties confirmed a best single photon collection efficiency enhancement with a factor larger than ten folds and a mild decreasing of the decoherence time with the reduction of the pillar diameter was observed as expected. These results provide useful information in future applications of nanostructured diamond as single photon sources.

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ChemInform Abstract: Diamond‐based Structures to Collect and Guide Light

Cited by 2 publications

References 1 publication

Integrated waveguides and deterministically positioned nitrogen vacancy centers in diamond created by femtosecond laser writing

Integrated waveguides and deterministically positioned nitrogen vacancy centers in diamond created by femtosecond laser writing

Large scale fabrication of nitrogen vacancy-embedded diamond nanostructures for single-photon source applications

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