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arXiv · 2407.17370

Spatially multiplexed single-photon sources based on binary-tree multiplexers with optimized structure

Matyas Mechler·Peter Adam
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Abstract

We develop a method for optimizing the structure of general binary-tree multiplexers realized with asymmetric photon routers aiming at improving the performance of spatially multiplexed single-photon sources. Our procedure systematically considers all possible binary-tree multiplexers that can be formed by a certain number of photon routers. Using this method one can select the multiplexer structure that leads to the highest single-photon probability for a given set of loss parameters characterizing the system. We determine the optimal general binary-tree multiplexers for experimentally realizable values of the transmission coefficients of the photon routers and that of the detector efficiency. We show that single-photon sources based on such optimal multiplexers yield higher single-photon probabilities than that can be achieved with single-photon sources based on any other spatial multiplexer considered in the literature. Our approach improves the performance of multiplexed single-photon sources even for small system sizes which is the typical situation in current experiments.

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Matyas Mechler, Peter Adam. 2024-07-24. Spatially multiplexed single-photon sources based on binary-tree multiplexers with optimized structure. https://arxiv.org/abs/2407.17370

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