2003/03/25 by Yu-xi Liu, Adam Miranowicz, A. Miranowicz +4 · 1 citation
Computer Science · Materials Science · Physics and Astronomy · #Quantum Dots Synthesis And Properties #Quantum Information and Cryptography #Semiconductor Quantum Structures and Devices #quant-ph
paper · pdf · doi:10.1103/physreva.67.034303
published as Phys. Rev. A 67, 034303 (2003) · 4 pages, two figures
openalex publication_date 2003/03/25 · arxiv created 2003/04/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The size-dependent decoherence of the exciton states, resulting from the spontaneous emission, is investigated in a semiconductor spherical microcrystallite under the condition aB\ensuremath≪R0<~\ensuremathλ. In general, the larger size of the microcrystallite corresponds to the shorter coherence time. If the initial state is a superposition of two different excitonic coherent states, the coherence time depends on both the overlap of two excitonic coherent states and the size of the microcrystallite. When the system with fixed size is initially in the even or odd coherent state, the larger average number of the excitons corresponds to the faster decoherence. When the average number of the excitons is given, the bigger size of the microcrystallite corresponds to the faster decoherence. The decoherence of the exciton states for the materials GaAs and CdS is numerically studied by our theoretical analysis.