@inproceedings{941fe6f68e834832bdc6c671082fa1f5,
title = "Portable integrated quantum optics for quantum communication",
abstract = "We present integrated sources of polarization entanglement built on portable platforms for quantum communication. We employ type-II degenerate spontaneous parametric down conversion processes in PPKTP waveguides to generate pairs of orthogonally polarized photons at near-infrared wavelengths. The photons are sent to a 50/50 non-polarizing beam splitter (NPBS) to generate post-selected polarization-entangled states via coincidence measurements. The small size of the waveguides allows the installation of several units on the same platform, and thereby the generation of multiple entangled states simultaneously. We use a computer-controlled tomography system to characterize the produced states and combine the photons from adjacent waveguides on another NPBS to perform Bell-state measurements, a prerequisite to entanglement swapping. The overall experiment is compact and requires little alignment when set, making it an attractive option for local quantum networking using mobile platforms, e.g., drones or satellites.",
keywords = "Quantum information, entanglement swapping, nonlinear optics, quantum optics",
author = "Tiphaine Kouadou and David Diaz and Kwiat, {Paul G.}",
note = "Publisher Copyright: {\textcopyright} 2023 SPIE.; Photonics for Quantum 2023 ; Conference date: 05-06-2023 Through 08-06-2023",
year = "2023",
doi = "10.1117/12.2680341",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Figer, {Donald F.} and Michael Reimer",
booktitle = "Photonics for Quantum 2023",
}