Bulk AlInAs on InP(111) as a Novel Material System for Pure Single Photon Emission
Document Type
Article
Publication Date
10-3-2016
Publication Information
Simmonds, Paul J.. (2016). "Bulk AlInAs on InP(111) as a Novel Material System for Pure Single Photon Emission". Optics Express, 24(20), 23198-23206. http://doi.org/10.1364/OE.24.023198
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Abstract
In this letter, we report on quantum light emission from bulk AlInAs grown on InP(111) substrates. We observe indium rich clusters in the bulk Al0.48In0.52As (AlInAs), resulting in quantum dot-like energetic traps for charge carriers, which are confirmed via cross-sectional scanning tunnelling microscopy (XSTM) measurements and 6-band k·p simulations. We observe quantum dot (QD)-like emission signals, which appear as sharp lines in our photoluminescence spectra at near infrared wavelengths around 860 nm, and with linewidths as narrow as 50 μeV. We demonstrate the capability of this new material system to act as an emitter of pure single photons as we extract g(2)-values as low as
for continuous wave (cw) excitation and 
for pulsed excitation.