Wiring up pre-characterized single-photon emitters by laser lithography

Shi, Qiang; Sontheimer, Bernd; Nikolay, Niko; Schell, Andreas W.; Fischer, Joachim; Naber, A.; Benson, Oliver; Wegener, Martin

doi:10.1038/srep31135

Cited by 51 publications

(44 citation statements)

References 30 publications

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“…We further demonstrate waveguide excitation and collection of light from laser-formed single NVs. Such waveguide coupled NVs could open the door to more sophisticated quantum photonic networks in diamond, exploiting optically linked single NVs for single photon sources or solid state qubits [19][20][21] .…”

mentioning

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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mentioning

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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“…Fig. 6) compares confocal fluorescence scans of a typical Si 3 N 4 on SiO 2 waveguide chip, and a silica device as presented in this article to a reference scan of single quantum emitters (nitrogen-vacancy color centers in diamond) on a glass substrate, as used in single photon experiments [18]. The Si 3 N 4 on SiO 2 waveguide chip is not suitable for single quantum emitter experiments as it's fluorescence background is ten times higher than that of the emitters themselves.…”

Section: Resultsmentioning

confidence: 99%

Integrated Thermal Silica Micro-Resonator Waveguide System With Ultra-Low Fluorescence

Pyrlik

Schlegel

Böhm

et al. 2019

IEEE Photon. Technol. Lett.

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Thermally grown silica is one of the most desirable materials for the realization of optical waveguides and whispering-gallery mode micro-resonators due to the ultra-low propagation loss and broad transparency window from UV to mid-IR. Here, we present the design, fabrication, and characterization of a high-Q ring-resonator device with a monolithically integrated evanescent rib waveguide coupler made solely from silica thermally grown on a Si substrate. The device delivered an intrinsic Q-factor of 3.7 × 10 6 and operated close to the critical coupling regime for both TE and TM polarizations. The achieved Q-factors were more than three orders of magnitude higher than those of comparable silica resonator devices. Furthermore, we showcase the ultra-low parasitic fluorescence unique to thermally grown silica and compare it to a device fabricated in Si 3 N 4 .

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“…In future work, single NVC will be integrated into the waveguide network. In fact, single emitters integrated into waveguides with a refractive index near to the substrate as well as their characterization were reported in [19]. There, it has been shown that the integration into waveguides efficiently guiding the emitted single photons increases the signal to noise ratio, facilitating coupling to single emitters also in our waveguides.…”

Section: Fluorescence Measurementsmentioning

confidence: 94%

Direct laser written polymer waveguides with out of plane couplers for optical chips

et al. 2017

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Optical technologies call for waveguide networks featuring high integration densities, low losses, and simple operation. Here, we present polymer waveguides fabricated from a negative tone photoresist via two-photon-lithography in direct laser writing, and show a detailed parameter study of their performance. Specifically, we produce waveguides featuring bend radii down to 40 µm, insertion losses of the order of 10 dB, and loss coefficients smaller than 0.81 dB mm −1 , facilitating high integration densities in writing fields of 300 µm × 300 µm. A novel three-dimensional coupler design allows for coupling control as well as direct observation of outputs in a single field of view through a microscope objective. Finally, we present beam-splitting devices to construct larger optical networks, and we show that the waveguide material is compatible with the integration of quantum emitters.

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Wiring up pre-characterized single-photon emitters by laser lithography

Cited by 51 publications

References 30 publications

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

Integrated Thermal Silica Micro-Resonator Waveguide System With Ultra-Low Fluorescence

Direct laser written polymer waveguides with out of plane couplers for optical chips

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