Femtosecond Transfer and Manipulation of Persistent Hot-Trion Coherence in a Single CdSe/ZnSe Quantum Dot
| Autor: | Alfred Leitenstorfer, Tilmann Kuhn, P. Henzler, M. Holtkemper, M. Erbe, Suddhasatta Mahapatra, D. Nabben, Denis V. Seletskiy, C. Traum, Doris E. Reiter, Karl Brunner |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter::Other Exciton Dephasing General Physics and Astronomy FOS: Physical sciences Electron Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 01 natural sciences symbols.namesake Quantum beats Pauli exclusion principle Quantum dot 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) symbols ddc:530 Atomic physics Trion Ultrafast phenomena Nanophotonics Quantum control II-VI semiconductors Quantum dots Femtosecond laser spectroscopy Ultrafast pump-probe spectroscopy Quantum master equation 010306 general physics Quantum Physics (quant-ph) Coherence (physics) |
| DOI: | 10.48550/arxiv.2011.10393 |
| Popis: | Ultrafast transmission changes around the fundamental trion resonance are studied after exciting a p-shell exciton in a negatively charged II-VI quantum dot. The biexcitonic induced absorption reveals quantum beats between hot trion states at 133 GHz. While interband dephasing is dominated by relaxation of the P-shell hole within 390 fs, trionic coherence remains stored in the spin system for 85 ps due to Pauli blocking of the triplet electron. The complex spectro-temporal evolution of transmission is explained analytically by solving the Maxwell-Liouville equations. Pump and probe polarizations provide full control over amplitude and phase of the quantum beats. published |
| Databáze: | OpenAIRE |
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