A scheme for measuring vibrational frequency and coupling strength in a coupled nanomechanical resonator-quantum dot system

被引：24
|
作者：
Li, Jin-Jin [1 ]
Zhu, Ka-Di [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Dept Phys, Shanghai 200240, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 06期
关键词：
micromechanical resonators; multiphoton processes; nanotechnology; semiconductor quantum dots; Stark effect; vibrational states; NANOELECTROMECHANICAL SYSTEMS;
D O I：
10.1063/1.3072599
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The authors theoretically propose a precise way to measure the vibrational frequency and coupling strength in a coupled nanomechanical resonator-quantum dot system in terms of mechanically induced coherent population oscillation. The pump-probe spectroscopy that exhibits new features such as mechanically induced three-photon resonance and ac Stark effect is obtained. Simultaneously, the coupling strength between nanomechanical resonator and quantum dot can also be detected from Rabi-splitting-like peak in the probe spectrum. Our results could be applied to other systems such as coupled DNA-quantum dot systems.
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页数：3
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