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Electro-optical studies of the dark exciton using vertical-cavity single-photon light-emitting devices
Within this project we will develop high-quality single-photon light-emitting devices with InGaAs quantum dots in the active layer. The electrically contacted devices will allow us to externally control the charge configuration in the quantum dots which will be exploited in order to address and manipulate dark exciton states in the quantum dots. This will allow us to explore the potential of these states to act as qubits with long coherence times as building blocks for quantum information systems.
Partners:
Prof. Dr. D. Gershoni, Technion in Haifa, Israel
Prof Dr. D. Bimberg, Institut für Festkörperphysik, Technische Universität Berlin, Germany
Funded by:
German-Israeli-Foundation for Scientific Research and Development, Grant-No.: 1148-77.14/2011
Publications:
Featured in: Nature Photonics | Research Highlights by N. Horiuchi, Nature Photonics 10, 145 (2016)
References:
M. Gschrey, M. Seifried, L. Krüger, R. Schmidt, J.-H. Schulze, T. Heindel, S. Burger, S. Rodt, F. Schmidt, A. Strittmatter, and S. Reitzenstein, "Enhanced photon-extraction efficiency from deterministic quantum-dot microlenses", arXiv:1312.6298 (2013)
T. Heindel, C. Schneider, M. Lermer, S. H. Kwon, T. Braun, S. Reitzenstein, S. Höfling, M. Kamp, and A. Forchel, "Electrically driven quantum dot-micropillar single photon source with 34% overall efficiency“, Appl. Phys. Lett. 96, 011107 (2010)
E. Poem, Y. Kodriano, C. Tradonski, N. H. Lindner, B. D. Gerardot, P. M. Petroff and D. Geshoni, “Accessing the dark exciton with light.” Nature Phys. 6, 993 (2010)
D. Bimberg, E. Stock, A. Lochmann, A. Schliwa, J. Töfflinger, W. Unrau, M. Munnix, S. Rodt, V. A. Haisler, A. I. Toropov, A. Bakarov, A. K. Kalagin, “Quantum Dots for Single- and Entangled-Photon Emitters”, IEEE Photonics J. 1, 58 (2009)