On exciton decoherence in quantum dots
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Publication:1410206
DOI10.1023/A:1025486926409zbMATH Open1037.81512arXivcond-mat/0212057OpenAlexW2997115417MaRDI QIDQ1410206
Publication date: 14 October 2003
Published in: International Journal of Theoretical Physics (Search for Journal in Brave)
Abstract: The effects resulting due to dressing of an exciton with phonons are analysed as the source of unavoidable decoherence of orbital degrees of freedom in quantum dots. The dressing with longitudinal optical phonons results in energetic shift of order of a few meV even of the ground state of exciton in a state-of-the-art InAs/GaAs dot and the mediating role of longitudinal acoustical phonons is essential in this process. The characteristic time needed for dressing of the exciton with optical phonons is of a picosecond order. That time can be regarded as the lowest limit for decoherence for optically driven quantum gates employing self-assembled quantum dot structures.
Full work available at URL: https://arxiv.org/abs/cond-mat/0212057
decoherencepolaronquantum dotsdecoherence for optically driven quantum gatesexciton-phonon interaction
Related Items (4)
EXCITON-MEDIATED RAMAN SCATTERING IN ONE-DIMENSIONAL QUANTUM DOTS ⋮ EXCITON STATES IN A QUANTUM DOT WITH PARABOLIC CONFINEMENT ⋮ Localization and entanglement of an exciton in a quantum dot molecule by an ac electric field ⋮ Spin Decoherence in Quantum Dots
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