Broadband indistinguishability from bright parametric downconversion in a semiconductor waveguide
MetadataShow full item record
Altmetrics Handle Statistics
Altmetrics DOI Statistics
Parametric downconversion (PDC) in semiconductor Bragg-reflection waveguides (BRW) is routinely exploited for photon-pair generation in the telecommunication range. Contrary to many conventional PDC sources, BRWs offer possibilities to create spectrally broadband but nevertheless indistinguishable photon pairs in orthogonal polarizations that simultaneously incorporate high frequency entanglement. We explore the characteristics of co-propagating twin beams created in a type-II ridge BRW. Our PDC source is bright and efficient, serving as a benchmark of its performance and justifies its exploitation for further use in quantum photonics. We then examine the coalescence of the twin beams and investigate the effect of their inevitable multi-photon contributions on the observed photon bunching. Our results show that BRWs have a great potential for producing broadband indistinguishable photon pairs as well as multi-photon states.
Günthner , T , Pressl , B , Laiho , K , Geßler , J , Höfling , S , Kamp , M , Schneider , C & Weihs , G 2015 , ' Broadband indistinguishability from bright parametric downconversion in a semiconductor waveguide ' , Journal of Optics , vol. 17 , no. 12 , 125201 , pp. 1-9 . https://doi.org/10.1088/2040-8978/17/12/125201
Journal of Optics
© 2015 IOP Publishing Ltd. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.