Transient reflection: a versatile technique for ultrafast spectroscopy of a single quantum dot in complex environments.

Transient reflection: a versatile technique for ultrafast spectroscopy of a single quantum dot in complex environments.
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瞬态反射:复杂环境中单个量子点超快光谱的通用技术

DOI:
10.1021/nl203804n
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发表时间:
2012
期刊:
影响因子:
10.8
通讯作者:
M. Lippitz
M. Lippitz
中科院分区:
材料科学1区
文献类型:
--
作者:
C. Wolpert;C. Dicken;P. Atkinson;L. Wang;A. Rastelli;O. G. Schmidt;H. Giessen;M. Lippitz

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日益复杂的结构(例如光学天线或腔体)与自组装量子点耦合,以获取其量子光学特性。在许多情况下,这些结构给用于写入和读出量子点状态的超快光谱的常用方法带来了问题。我们提出了一种纯远场方法,仅需要光学访问量子点,并且不对样品设计施加进一步的限制。我们展示了偶极矩小至 18 D 的单个 GaAs 量子点的拉比振荡和扰动自由感应衰变。我们的方法将极大地促进复杂量子光学电路的超快光谱分析。
Increasingly complex structures such as optical antennas or cavities are coupled to self-assembled quantum dots to harvest their quantum-optical properties. In many cases, these structures pose a problem for common methods of ultrafast spectroscopy used to write and read out the state of the quantum dot. We present a pure far-field method that only requires optical access to the quantum dot and does not impose further restrictions on sample design. We demonstrate Rabi oscillations and perturbed free induction decay of single GaAs quantum dots that have a dipole moment as small as 18 D. Our method will greatly facilitate ultrafast spectroscopy of complex quantum-optical circuits.
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