Year: 2025
Type: article
Abstract: Quantum fluctuation plays a key role in parametric down-conversion in the Langevin regime. In this Letter, 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 parametric down-conversion (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.
Source: Physical Review Letters
DOI: 10.1103/mcxn-x7bz
Institutions: National Central University, National Tsing Hua University
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
Award: G953097087
OpenAlex ID: W4416184330