Rabi oscillations of excitons in single quantum dots
Rabi oscillations of excitons in single quantum dots
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DOI：
10.1103/physrevlett.87.133603
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发表时间：
2001-09-24
影响因子：
8.6
通讯作者：
Sham, LJ
中科院分区：
文献类型：
--
作者：
Stievater, TH;Li, XQ;Sham, LJ
瞬态非线性光学光谱，限于单个GaAs量子点上的激子进行，显示类似于拉比振荡在两个层次的原子系统的振荡。这个演示对应于单个量子点中的一个量子比特旋转，这对于使用量子点激子进行量子计算的建议很重要。从数据推断的偶极矩是一致的，直接从线性吸收研究。该测量将量子点激子跃迁的人工原子模型扩展到强场极限，并且使得使用光π脉冲对单激子的量子态进行完全相干光学控制成为可能。
Transient nonlinear optical spectroscopy, performed on excitons confined to single GaAs quantum dots, shows oscillations that are analogous to Rabi oscillations in two-level atomic systems. This demonstration corresponds to a one-qubit rotation in a single quantum dot which is important for proposals using quantum dot excitons for quantum computing. The dipole moment inferred from the data is consistent with that directly obtained from linear absorption studies. The measurement extends the artificial atom model of quantum dot excitonic transitions into the strong-field limit, and makes possible full coherent optical control of the quantum state of single excitons using optical pi pulses.