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DOE OSTI · 1906624

Design Methodologies for Integrated Quantum Frequency Processors

Nussbaum, Benjamin E.·Pizzimenti, Andrew J.·Lingaraju, Navin B.·Lu, Hsuan-Hao·Lukens, Joseph M.
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Abstract

We report frequency-encoded quantum information offers intriguing opportunities for quantum communications and networking, with the quantum frequency processor paradigm—based on electro-optic phase modulators and Fourier-transform pulse shapers—providing a path for scalable construction of quantum gates. Yet all experimental demonstrations to date have relied on discrete fiber-optic components that occupy significant physical space and impart appreciable loss. In this article, we introduce a model for the design of quantum frequency processors comprising microring resonator-based pulse shapers and integrated phase modulators. We estimate the performance of single and parallel frequency-bin Hadamard gates, finding high fidelity values that extend to frequency bins with relatively wide bandwidths. By incorporating multi-order filter designs as well, we explore the limits of tight frequency spacings, a regime extremely difficult to obtain in bulk optics. Overall, our model is general, simple to use, and extendable to other material platforms, providing a much-needed design tool for future frequency processors in integrated photonics.

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97 MATHEMATICS AND COMPUTINGoptical pulse shapingoptical resonatorsphase modulationphotonic integrated circuitsquantum computingsilicon photonics

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Nussbaum, Benjamin E., Pizzimenti, Andrew J., Lingaraju, Navin B., Lu, Hsuan-Hao, Lukens, Joseph M.. 2022-07-20. Design Methodologies for Integrated Quantum Frequency Processors. https://doi.org/10.1109/jlt.2022.3192759

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