Continuous-variable spatio-spectral quantum networks in nonlinear photonic lattices

• URL: http://arxiv.org/abs/2504.06229v1
• Date: Tue, 08 Apr 2025 17:24:00 GMT
• Title: Continuous-variable spatio-spectral quantum networks in nonlinear photonic lattices
• Authors: Natalia Costas, Nadia Belabas, David Barral,
• Abstract summary: Multiplexing information in different degrees of freedom and use of integrated and fiber-optic components are natural solutions to the scalability in optical quantum communications and computing.<n>For bulk-optics systems, where size, cost, stability, and reliability are factors, this remains either impractical or highly challenging to implement.<n>We present a framework to engineer continuous entanglement produced through nondegenerate spontaneous parametric down-conversion in chi(2) nonlinear photonic lattices in spatial and spectral degrees of freedom.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Multiplexing information in different degrees of freedom and use of integrated and fiber-optic components are natural solutions to the scalability bottleneck in optical quantum communications and computing. However, for bulk-optics systems, where size, cost, stability, and reliability are factors, this remains either impractical or highly challenging to implement. In this paper we present a framework to engineer continuous-variable entanglement produced through nondegenerate spontaneous parametric down-conversion in \chi^(2) nonlinear photonic lattices in spatial and spectral degrees of freedom that can solve the scalability challenge. We show how spatio-spectral pump shaping produce cluster states that are naturally distributable in quantum communication networks and a resource for measurement-based quantum computing.

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