Resonance fluorescence of a site-controlled quantum dot realized by the buried-stressor growth technique
Resonance fluorescence of a site-controlled quantum dot realized by the buried-stressor growth technique
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DOI：
10.1063/1.4978428
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发表时间：
2016-12
影响因子：
4
通讯作者：
M. Strauss;A. Kaganskiy;R. Voigt;Peter Schnauber;J. Schulze;S. Rodt;A. Strittmatter;S. Reitzenstein
中科院分区：
文献类型：
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作者：
M. Strauss;A. Kaganskiy;R. Voigt;Peter Schnauber;J. Schulze;S. Rodt;A. Strittmatter;S. Reitzenstein
半导体量子点（QD）的现场控制生长代表了实现可扩展量子技术平台的重大进步。一个直接的好处是量子发射体确定性地集成到光学微腔中。然而，量子点的位点控制生长通常是以降低光学质量为代价实现的。在这里，我们表明，掩埋应力生长技术，使高品质的网站控制的量子点具有吸引力的光学和量子光学特性的实现。在低温下进行的依赖于激发功率的共振荧光实验证明了这一点，量子点发射线宽低至10 μeV。共振激发导致观察到的连续波激发下的Mollow三重态，并使相干态的制备脉冲激发下。在共振π脉冲激发下，我们观察到与g（2）（0）= 0.12相关的干净的单光子发射，受到非理想激光抑制的限制。
Site-controlled growth of semiconductor quantum dots (QDs) represents a major advancement to achieve scalable quantum technology platforms. One immediate benefit is the deterministic integration of quantum emitters into optical microcavities. However, site-controlled growth of QDs is usually achieved at the cost of reduced optical quality. Here, we show that the buried-stressor growth technique enables the realization of high-quality site-controlled QDs with attractive optical and quantum optical properties. This is evidenced by performing excitation power dependent resonance fluorescence experiments at cryogenic temperatures showing QD emission linewidths down to 10 μeV. Resonant excitation leads to the observation of the Mollow triplet under CW excitation and enables coherent state preparation under pulsed excitation. Under resonant π-pulse excitation we observe clean single-photon emission associated with g(2)(0) = 0.12 limited by non-ideal laser suppression.