Magnetic field tuning of a quantum dot strongly coupled to a photonic crystal cavity

被引：38
|
作者：
Kim, Hyochul [1 ,2 ]
Shen, Thomas C. [1 ,2 ]
Sridharan, Deepak [1 ,2 ]
Solomon, Glenn S. [3 ]
Waks, Edo [1 ,2 ]
机构：
[1] Univ Maryland, Dept Elect & Comp Engn, IREAP, College Pk, MD 20742 USA
[2] Univ Maryland, Joint Quantum Inst, College Pk, MD 20742 USA
[3] Univ Maryland, NIST, Joint Quantum Inst, Gaithersburg, MD 20899 USA
来源：
APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 09期
基金：
美国国家科学基金会;
关键词：
NANOCAVITY; SPIN;
D O I：
10.1063/1.3562344
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We apply magnetic fields of up to 7 T to an indium arsenide quantum dot (QD) strongly coupled to a photonic crystal cavity. The field lifts the degeneracy of QD exciton spin states, and tune their emission energy by a combination of diamagnetic and Zeeman energy shifts. We use magnetic field tuning to shift the energies of the two exciton spin states to be selectively on resonance with the cavity. Strong coupling between the cavity and both states is observed. Magnetic field tuning enables energy shifts as large as 0.83 meV without significant degradation of the QD-cavity coupling strength. (C) 2011 American Institute of Physics. [doi:10.1063/1.3562344]
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页数：3
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