论文标题
单一的转移和操纵单个CDSE/ZNSE量子点中持续的热曲线连贯性
Femtosecond Transfer and Manipulation of Persistent Hot-Trion Coherence in a Single CdSe/ZnSe Quantum Dot
论文作者
论文摘要
在激发带负电荷的II-VI量子点中激发了P-shell激子之后，研究了基本TRION共振周围的超快传播变化。 Biexcitonic诱导的吸收揭示了133 GHz的热trion状态之间的量子搏动。虽然频带间dephasing由390 FS内的P壳孔放松支配，但由于三胞胎电子的Pauli阻断，三位元连贯性仍在旋转系统中存储为85 PS。通过求解Maxwell-Liouville方程来分析传播的复杂光谱传播演变。泵和探针极化提供了对量子节拍的幅度和相位的完全控制。
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.
