Single photon emission at 1.55  μ m from charged and neutral exciton confined in a single quantum dash

• Published in: Applied physics letters Vol. 105; no. 2
• Main Authors: Dusanowski, Ł., Syperek, M., Mrowiński, P., Rudno-Rudziński, W., Misiewicz, J., Somers, A., Höfling, S., Kamp, M., Reithmaier, J. P., Sęk, G.
• Format: Journal Article
• Language: English
• Published: Melville American Institute of Physics 14-07-2014
• Subjects: ALUMINIUM COMPOUNDS; Applied physics; ARSENIC COMPOUNDS; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CORRELATIONS; Diodes; Emitters; Excitons; FIBERS; GALLIUM COMPOUNDS; Histograms; INDIUM ARSENIDES; INDIUM COMPOUNDS; INDIUM PHOSPHIDES; PHOTOLUMINESCENCE; Photon emission; PHOTONS; POLARIZATION; QUATERNARY ALLOY SYSTEMS; Self-assembly; SPATIAL RESOLUTION; STATISTICS; TEMPERATURE RANGE 0000-0013 K
• ISSN: 0003-6951; 1077-3118
• DOI: 10.1063/1.4890603

We investigate charged and neutral exciton complexes confined in a single self-assembled InAs/InGaAlAs/InP quantum dash emitting at 1.55 μm. The emission characteristics have been probed by measuring high-spatial-resolution polarization-resolved photoluminescence and cross-correlations of photon emission statistics at T = 5 K. The photon auto-correlation histogram of the emission from both the neutral and charged exciton indicates a clear antibunching dip with as-measured g(2)(0) values of 0.18 and 0.31, respectively. It proves that these exciton complexes confined in single quantum dashes of InP-based material system can act as true single photon emitters being compatible with standard long-distance fiber communication technology.