Tunable, high-sensitive measurement of inter-dot transition via tunneling induced absorption

A tunable, narrow absorption spectrum induced by resonant tunneling is demonstrated and proposed for measuring interdot tunneling. Tunneling-induced absorption (TIA) arises from constructive interference between different transition paths, and the large nonlinear TIA significantly enhances the total...

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Bibliographic Details
Published in:Applied physics letters 2016-10, Vol.109 (14)
Main Authors: Peng, Yandong, Yang, Aihong, Chen, Bing, Li, Lei, Liu, Shande, Guo, Hongju
Format: Article
Language:English
Subjects:
Absorption spectra
Applied physics
Coupling
Resonant tunneling
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Summary:A tunable, narrow absorption spectrum induced by resonant tunneling is demonstrated and proposed for measuring interdot tunneling. Tunneling-induced absorption (TIA) arises from constructive interference between different transition paths, and the large nonlinear TIA significantly enhances the total absorption. The narrow nonlinear TIA spectrum is sensitive to inter-dot tunneling, and its sensor characteristics, including sensitivity and bandwidth, are investigated in weak-coupling and strong-coupling regimes, respectively.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4963892