论文标题
半导体量子点Wigner分子的相干控制和光谱
Coherent control and spectroscopy of a semiconductor quantum dot Wigner molecule
论文作者
论文摘要
多电子半导体量子点已经在Qubits中发现了广泛的应用，它们可以读出并增强极化性。但是，此类点中的相干控制通常仅限于最低两个级别，并且在强烈相互作用的方向上的这种控制尚未实现。在这里，我们报告了基于硅的量子点中八种不同共振的量子控制。我们使用量子读数来执行光谱法，揭示了一组密集的能级，其特征间距远小于单粒子能量。通过与完整的配置交互计算进行比较，我们认为密集的水平集来自Wigner-Mole-Moletemlet Physics。
Multi-electron semiconductor quantum dots have found wide application in qubits, where they enable readout and enhance polarizability. However, coherent control in such dots has typically been restricted to only the lowest two levels, and such control in the strongly interacting regime has not been realized. Here we report quantum control of eight different resonances in a silicon-based quantum dot. We use qubit readout to perform spectroscopy, revealing a dense set of energy levels with characteristic spacing far smaller than the single-particle energy. By comparing with full configuration interaction calculations, we argue that the dense set of levels arises from Wigner-molecule physics.
