Fast Electrical Control of a Quantum Dot Strongly Coupled to a Photonic-Crystal Cavity

被引：67
|
作者：
Faraon, Andrei [1 ,2 ]
Majumdar, Arka [1 ]
Kim, Hyochul [3 ]
Petroff, Pierre [3 ]
Vuckovic, Jelena [1 ]
机构：
[1] Stanford Univ, EL Ginzton Lab, Stanford, CA 94305 USA
[2] Hewlett Packard Labs, Palo Alto, CA 94304 USA
[3] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA
来源：
PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 04期
基金：
美国国家科学基金会;
关键词：
MODULATOR; ELECTROABSORPTION; NANOCAVITY; CAPACITOR; SYSTEM;
D O I：
10.1103/PhysRevLett.104.047402
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The resonance frequency of an InAs quantum dot strongly coupled to a GaAs photonic-crystal cavity was electrically controlled via the quadratic quantum confined Stark effect. Stark shifts up to 0.3 meV were achieved using a lateral Schottky electrode that created a local depletion region at the location of the quantum dot. We report switching of a probe laser coherently coupled to the cavity up to speeds as high as 150 MHz, limited by the RC constant of the transmission line. The coupling strength g and the magnitude of the Stark shift with electric field were investigated while coherently probing the system.
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页数：4
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