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arXiv · 2309.09107

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

Mikhail Tokman·Jitendra Verma·Jacob Bohreer·Alexey Belyanin
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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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Mikhail Tokman, Jitendra Verma, Jacob Bohreer, Alexey Belyanin. 2023-09-16. Maximally efficient biphoton generation by single photon decay in nonlinear quantum photonic circuits. https://arxiv.org/abs/2309.09107

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