%0 Journal Article
%T Integrated spatial multiplexing of heralded single-photon sources
%A Collins, M. J.
%A Xiong, C.
%A Rey, I. H.
%A Vo, T. D.
%A He, J.
%A Shahnia, S.
%A Reardon, C.
%A Krauss, T. F.
%A Steel, M. J.
%A Clark, M. J.
%A &  Eggleton, B. J.
%J Nature Communications
%D 2013
%G English
%F Collins_etal2013
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=1001), last updated on Mon, 28 Sep 2015 13:33:53 -0500
%X The non-deterministic nature of photon sources is a key limitation for single-photon quantum processors. Spatial multiplexing overcomes this by enhancing the heralded single-photon yield without enhancing the output noise. Here the intrinsic statistical limit of an individual source is surpassed by spatially multiplexing two monolithic silicon-based correlated photon pair sources in the telecommunications band, demonstrating a 62.4% increase in the her- alded single-photon output without an increase in unwanted multipair generation. We further demonstrate the scalability of this scheme by multiplexing photons generated in two waveguides pumped via an integrated coupler with a 63.1% increase in the heralded photon rate. This demonstration paves the way for a scalable architecture for multiplexing many photon sources in a compact integrated platform and achieving efficient two-photon inter- ference, required at the core of optical quantum computing and quantum communication protocols.
%R 10.1038/ncomms3582
%U https://doi.org/10.1038/ncomms3582