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Trapped Ion Quantum Computing

Observation and Manipulation of Optical Parametric Down-Conversion in the Langevin Regime

arXiv

Authors: Yen-Ju Chen, Chun-Yuan Cheng, Tien-Dat Pham, Tzu-An Chen, Chang-Hau Kuo, Yen-Hung Chen, Chih-Sung Chuu

Year

2025

Paper ID

17183

Status

Preprint

Abstract Read

~2 min

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Abstract

Quantum fluctuation plays a key role in the parametric down-conversion in the Langevin regime. In this paper, we report the experimental realization of optical parametric down-conversion in the Langevin regime on a chip. By precisely controlling the loss inherently tied to fluctuation, we observe the asymmetric Hong-Ou-Mandel dip - a hallmark of quantum fluctuation in the fluctuation-driven PDC, and the fluctuation-induced compression of single photons by nearly one order of magnitude. These findings pave the way for the manipulation of quantum fluctuation, quantum states, and system-reservoir interaction.

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Quantum fluctuation plays a key role in the parametric down-conversion in the Langevin regime.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2511.10556 [2] arXiv https://arxiv.org/abs/2511.10556 [3] Publisher https://arxiv.org/abs/2511.10556

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