Efficient Photonic Integration of Diamond Color Centers and Thin-Film Lithium Niobate
On-chip photonic quantum circuits with integrated quantum memories have the potential to radically progress hardware for quantum information processing. In particular, negatively charged group-IV color centers in diamond are promising candidates for quantum memories, as they combine long storage tim...
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Format | Journal Article |
Language | English |
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27.06.2023
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Abstract | On-chip photonic quantum circuits with integrated quantum memories have the
potential to radically progress hardware for quantum information processing. In
particular, negatively charged group-IV color centers in diamond are promising
candidates for quantum memories, as they combine long storage times with
excellent optical emission properties and an optically-addressable spin state.
However, as a material, diamond lacks many functionalities needed to realize
scalable quantum systems. Thin-film lithium niobate (TFLN), in contrast, offers
a number of useful photonic nonlinearities, including the electro-optic effect,
piezoelectricity, and capabilities for periodically-poled quasi-phase matching.
Here, we present highly efficient heterogeneous integration of diamond
nanobeams containing negatively charged silicon-vacancy (SiV) centers with TFLN
waveguides. We observe greater than 90\% transmission efficiency between the
diamond nanobeam and TFLN waveguide on average across multiple measurements. By
comparing saturation signal levels between confocal and integrated collection,
we determine a $10$-fold increase in photon counts channeled into TFLN
waveguides versus that into out-of-plane collection channels. Our results
constitute a key step for creating scalable integrated quantum photonic
circuits that leverage the advantages of both diamond and TFLN materials. |
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AbstractList | On-chip photonic quantum circuits with integrated quantum memories have the
potential to radically progress hardware for quantum information processing. In
particular, negatively charged group-IV color centers in diamond are promising
candidates for quantum memories, as they combine long storage times with
excellent optical emission properties and an optically-addressable spin state.
However, as a material, diamond lacks many functionalities needed to realize
scalable quantum systems. Thin-film lithium niobate (TFLN), in contrast, offers
a number of useful photonic nonlinearities, including the electro-optic effect,
piezoelectricity, and capabilities for periodically-poled quasi-phase matching.
Here, we present highly efficient heterogeneous integration of diamond
nanobeams containing negatively charged silicon-vacancy (SiV) centers with TFLN
waveguides. We observe greater than 90\% transmission efficiency between the
diamond nanobeam and TFLN waveguide on average across multiple measurements. By
comparing saturation signal levels between confocal and integrated collection,
we determine a $10$-fold increase in photon counts channeled into TFLN
waveguides versus that into out-of-plane collection channels. Our results
constitute a key step for creating scalable integrated quantum photonic
circuits that leverage the advantages of both diamond and TFLN materials. |
Author | Herrmann, Jason F Borit, Jean-Michel McQuade, Patrick J Lu, Haiyu Aghaeimeibodi, Shahriar Ansari, Vahid Vučković, Jelena Riedel, Daniel Lee, Hope Safavi-Naeini, Amir H Grzesik, Jakob Melosh, Nick A Stokowski, Hubert S Shen, Zhi-Xun |
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BackLink | https://doi.org/10.48550/arXiv.2306.15207$$DView paper in arXiv |
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Snippet | On-chip photonic quantum circuits with integrated quantum memories have the
potential to radically progress hardware for quantum information processing. In... |
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SubjectTerms | Physics - Applied Physics Physics - Optics Physics - Quantum Physics |
Title | Efficient Photonic Integration of Diamond Color Centers and Thin-Film Lithium Niobate |
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