A simulation methodology for quantum photonic integrated circuits in the presence of fabrication imperfections, loss, and partially distinguishable photons

Sebastian Gitt; Bozidar Novakovic; Dylan McGuire; Jeff Young

doi:10.1117/12.2675954

19 July 2023 A simulation methodology for quantum photonic integrated circuits in the presence of fabrication imperfections, loss, and partially distinguishable photons

Sebastian Gitt, Bozidar Novakovic, Dylan McGuire, Jeff Young

Author Affiliations +

Proceedings Volume 12633, Photonics for Quantum 2023; 126330F (2023) https://doi.org/10.1117/12.2675954
Event: Photonics for Quantum, 2023, Rochester, New York, United States

Abstract

Discrete variable quantum photonic circuits rely on the interference between indistinguishable photons to produce non-classical results. However, indistinguishability between photons is often spoiled due to timing delays, different spectral profiles, or the presence of unwanted spectral correlations. Additionally, variability in circuit components can introduce further errors. Here we present a method for simulating the frequency domain response of quantum photonic integrated circuits (PICs), allowing the fidelity and probability of success of realistic quantum circuits to be characterized. As an example, we first model the biphoton wavefunction produced by spontaneous four-wave mixing in a silicon nitride microring resonator, then use our methodology to simulate the interference between heralded signal photons from two such sources in the presence of spectral correlations and circuit component variability due to manufacturing imperfections.

Conference Presentation

Citation Download Citation

Sebastian Gitt, Bozidar Novakovic, Dylan McGuire, and Jeff Young "A simulation methodology for quantum photonic integrated circuits in the presence of fabrication imperfections, loss, and partially distinguishable photons", Proc. SPIE 12633, Photonics for Quantum 2023, 126330F (19 July 2023); https://doi.org/10.1117/12.2675954

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