Near-Unity Indistinguishability of Single Photons Emitted from Dissimilar and Independent Atomic Quantum Nodes
Year: 2024
Type: article
Abstract: Generating indistinguishable photons from independent nodes is an important challenge for the development of quantum networks. In this work, we demonstrate the generation of highly indistinguishable single photons from two dissimilar atomic quantum nodes. One node is based on a fully blockaded cold Rydberg ensemble and generates on-demand single photons. The other node is a quantum repeater node based on a Duan-Lukin-Cirac-Zoller quantum memory and emits heralded single photons after a controllable memory time that is used to synchronize the two sources. We demonstrate an indistinguishability of 94.6 ± 5.2 % for a temporal window including 90 % of the photons. This advancement opens new possibilities for interconnecting quantum repeater and processing nodes with high-fidelity Bell state measurement without sacrificing its efficiency. Published by the American Physical Society 2024
Source: PRX Quantum
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,450
Awards: G1175115578, G120905174, G1272927172, G1908469581, G2064873908, G210041235, G2262748287, G2462415295, G2575991346, G2601397997, G2763573136, G288263039, G2988934680, G3005324705, G300979063, G34346518, G3480869486, G357246561, G3681454997, G4042783231, G425668148, G434337789, Linking Nodes for The Quantum Internet, G5080475149, G531036588, G5852091828, G5922099756, ICFOstepstone PhD Programme for Early-Stage Researchers in Photonics, G6482940084, Disruptive Approaches to Atom-Light Interfaces, G6656126374, G69051668, G7425137858, G8180681537, G8684520763, G924867782
OpenAlex ID: W4400450962