Low-Photon-Number Optical Switching with a Single Quantum Dot Coupled to a Photonic Crystal Cavity

被引：163

作者：

Bose, Ranojoy ^{[1
]}

Sridharan, Deepak ^{[1
]}

Kim, Hyochul ^{[1
]}

Solomon, Glenn S. ^{[2
,3
]}

Waks, Edo ^{[1
,2
,3
]}

机构：

[1] Univ Maryland, Dept Elect & Comp Engn, IREAP, College Pk, MD 20742 USA

[2] NIST, Joint Quantum Inst, Gaithersburg, MD 20899 USA

[3] Univ Maryland, Gaithersburg, MD 20899 USA

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 108卷 / 22期

基金：

美国国家科学基金会;

关键词：

SPECTROSCOPY;

D O I：

10.1103/PhysRevLett.108.227402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate fast nonlinear optical switching between two laser pulses with as few as 140 photons of pulse energy by utilizing strong coupling between a single quantum dot (QD) and a photonic crystal cavity. The cavity-QD coupling is modified by a detuned pump pulse, resulting in a modulation of the scattered and transmitted amplitude of a time synchronized probe pulse that is resonant with the QD. The temporal switching response is measured to be as fast as 120 ps, demonstrating the ability to perform optical switching on picosecond timescales.

引用

页数：5

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