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Dynamic multi-photon number resolving detector with fiber ring and single-photon detector

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Abstract

The photon counting is an important task in quantum optics and photonic quantum information. The simplest photon counter found in the literature is a multi-photon number resolving detector (MPNRD), composed by a threshold single-photon detector and a time-multiplexing scheme usually built with a fiber ring. The correct photon number estimation is hampered by the optical losses and the non-unit quantum efficiency of the single-photon detector used. In this work we provide an analytical expression that improves the performance of the multi-photon number resolving detector when coherent states are measured. This transform the static MPNRD device in a dynamic MPNRD.

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Funding

This work was supported by the Brazilian agencies CNPq via Grant no. 309374/2021-9, CAPES via no. Grant 001 and FUNCAP. Also, this work was performed as part of the Brazilian National Institute of Science and Technology for Quantum Information.

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RVR and FAM had the main idea of the paper. IKA da Silva and RV Ramos made the calculations and numerical simulations. RV Ramos wrote the paper.

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Correspondence to R. V. Ramos.

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I declare that the authors have no competing interests as defined by Springer, or other interests that might be perceived to influence the results and/or discussion reported in this paper. On behalf of all authors, the corresponding author states that there is no conflict of interest.

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da Silva, I.K.A., Mendonca, F.A. & Ramos, R.V. Dynamic multi-photon number resolving detector with fiber ring and single-photon detector. Opt Quant Electron 55, 1063 (2023). https://doi.org/10.1007/s11082-023-05391-7

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  • DOI: https://doi.org/10.1007/s11082-023-05391-7

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