Time-bin entangled photon pairs from Bragg-reflection waveguides
Date
08/2018Author
Keywords
Metadata
Show full item recordAltmetrics Handle Statistics
Altmetrics DOI Statistics
Abstract
Semiconductor Bragg-reflection waveguides are well-established sources of correlated photon pairs as well as promising candidates for building up integrated quantum optics devices. Here, we use such a source with optimized non-linearity for preparing time-bin entangled photons in the telecommunication wavelength range. By taking advantage of pulsed state preparation and efficient free-running single-photon detection, we drive our source at low pump powers, which results in a strong photon-pair correlation. The tomographic reconstruction of the state’s density matrix reveals that our source exhibits a high degree of entanglement. We extract a concurrence of 88.9(1.8)% and a fidelity of 94.2(9)% with respect to a Bell state.
Citation
Chen , H , Auchter , S , Prilmüller , M , Schlager , A , Kauten , T , Laiho , K , Pressl , B , Suchomel , H , Kamp , M , Höfling , S , Schneider , C & Weihs , G 2018 , ' Time-bin entangled photon pairs from Bragg-reflection waveguides ' , APL Photonics , vol. 3 , no. 8 , 080804 . https://doi.org/10.1063/1.5038186
Publication
APL Photonics
Status
Peer reviewed
ISSN
2378-0967Type
Journal article
Rights
© 2018 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Description
This work was supported by the Austrian Science Fund (FWF) through the project nos. I 2065 and J 4125, the DFG project no. SCHN1376/2-1, the ERC project EnSeNa (257531), the State of Bavaria and China Scholarship Council (201503170272).Collections
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.