Programmable photon pair source
- URL: http://arxiv.org/abs/2108.01400v1
- Date: Tue, 3 Aug 2021 10:24:23 GMT
- Title: Programmable photon pair source
- Authors: Liang Cui, Jinjin Wang, Jiamin Li, Mingyi Ma, Z. Y. Ou, and Xiaoying
Li
- Abstract summary: Engineering the spectral property of photon pairs is crucial in practical applications.
We demonstrate a programmable photon pair source by exploiting a two-stage nonlinear interferometer.
We show that the output of the source can be tailored into multi-channel spectrally factorable photon pairs.
- Score: 3.6064670806006642
- License: http://creativecommons.org/licenses/by-nc-nd/4.0/
- Abstract: Photon pairs produced by the pulse-pumped nonlinear parametric processes have
been a workhorse of quantum information science. Engineering the spectral
property of the photon pairs is crucial in practical applications. In this
article, we demonstrate a programmable photon pair source by exploiting a
two-stage nonlinear interferometer with a phase-control device. The
phase-control device introduces phase shifts by a programmable phase function
that can be arbitrarily defined. With a properly designed phase function, the
output spectrum of the source can be freely customized and changed without
replacing any hardware component in the system. In addition to demonstrating
the generation of photon pairs with factorable, positively-correlated, and
negatively-correlated spectra, respectively, we show that the output of the
source can be tailored into multi-channel spectrally factorable photon pairs
without sacrificing efficiency. Such a source, having the ability to modify the
spectrum of the photon pairs at will according to the chosen application, is a
powerful tool for quantum information science.
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