Single photon sources for quantum information applications

S. Höfling; C. Schneider; T. Heindel; M. Lermer; T. B. Hoang; J. Beetz; T. Braun; L. Balet; N. Chauvin; L. Li; S. Reitzenstein; A. Fiore; M. Kamp; A. Forchel

doi:10.1117/12.912969

23 February 2012 Single photon sources for quantum information applications

S. Höfling, C. Schneider, T. Heindel, M. Lermer, T. B. Hoang, J. Beetz, T. Braun, L. Balet, N. Chauvin, L. Li, S. Reitzenstein, A. Fiore, M. Kamp, A. Forchel

Author Affiliations +

Proceedings Volume 8271, Quantum Dots and Nanostructures: Synthesis, Characterization, and Modeling IX; 82710D (2012) https://doi.org/10.1117/12.912969
Event: SPIE OPTO, 2012, San Francisco, California, United States

Abstract

Efficient sources of indistinguishable single photons are a key resource for various applications in fields like quantum sensing, quantum metrology and quantum information processing. In this contribution we report on single photon generation based on III-V semiconductor quantum dots (QDs). To increase the emission efficiency of single photons, it is essential to tailor the radiative properties of the quantum dot emitters by engineering their photonic environment. We present optimized single photon emitters being based on both micropillar and photonics crystal cavities, for applications in a vertical platform and on-chip in-plane platform, respectively. Electrically driven single photon sources with self assembled semiconductor QDs embedded into GaAs/AlAs micropillar cavities emit on demand net rates of ~35 MHz single photons, thus being well exploitable in quantum key distribution systems. In order to establish also a spatially deterministic fabrication platform, position controlled quantum dots are integrated into p-i-n micropillar cavities and single photon emission of a coupled QD-micropillar diode system is observed. Efficient broadband coupling of single photons into photonic crystal waveguides provides the basis for all on-chip quantum information processing, and an according approach is reported.

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S. Höfling, C. Schneider, T. Heindel, M. Lermer, T. B. Hoang, J. Beetz, T. Braun, L. Balet, N. Chauvin, L. Li, S. Reitzenstein, A. Fiore, M. Kamp, and A. Forchel "Single photon sources for quantum information applications", Proc. SPIE 8271, Quantum Dots and Nanostructures: Synthesis, Characterization, and Modeling IX, 82710D (23 February 2012); https://doi.org/10.1117/12.912969

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KEYWORDS

Single photon

Photonic crystals

Waveguides

Quantum dots

Quantum information

Quantum efficiency

Semiconductors

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