Maximally efficient biphoton generation by single photon decay in nonlinear quantum photonic circuits

• URL: http://arxiv.org/abs/2309.09107v1
• Date: Sat, 16 Sep 2023 22:49:53 GMT
• Title: Maximally efficient biphoton generation by single photon decay in nonlinear quantum photonic circuits
• Authors: Mikhail Tokman, Jitendra Verma, Jacob Bohreer, and Alexey Belyanin
• Abstract summary: We show that the well-known critical coupling concept of integrated optics can be generalized to the nonlinear coupling of quantized photon modes. We establish a fundamental upper limit on the nonlinear generation efficiency of quantum-correlated photons.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We develop a general nonperturbative formalism and propose a specific scheme for maximally efficient generation of biphoton states by parametric decay of single photons. We show that the well-known critical coupling concept of integrated optics can be generalized to the nonlinear coupling of quantized photon modes to describe the nonperturbative optimal regime of a single-photon nonlinearity and establish a fundamental upper limit on the nonlinear generation efficiency of quantum-correlated photons, which approaches unity for low enough absorption losses.

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