Integrated Quantum Photonics

We aim to develop an integrated quantum photonic platform based on thin-film lithium niobate to allow scalable quantum information processing

The coming decade will likely witness technology revolutions enabled by quantum science and engineering. Optical photons are ideal quantum information carriers and have led to numerous breakthroughs in quantum communication, networking, sensing, and computation. Despite impressive proof-of-concept demonstrations, implementing practical quantum algorithms requires a new level of complexity, where thousands to millions of optical elements need to be put together. Integrated photonics is likely the only solution.

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Here at QTE, we are developing an integrated quantum photonic platform based on thin-film lithium niobate. Lithium niobate offers many attractive properties that are critically missing in existing leading platforms, such as large electro-optic and piezoelectric coefficients, strong second-order nonlinearity, and engineerable ferroelectric domains. These properties allow key functionalities such as efficient quantum light generation, coherent spectral control, and ultra-fast switching. Based on this platform, we aim to build a fully integrated photonic processor for scalable quantum information processing. We also explore its heterogeneous integration with superconducting circuits to tackle outstanding challenges in quantum computing and quantum networks, such as single-photon feedforward, coherent microwave-optical transduction, and optical control/readout of superconducting devices.

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Interested to learn more or want to join us for this exciting research? Feel free to contact Di Zhu.