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Main Title: On-chip light detection using monolithically integrated quantum dot micropillars
Author(s): Karow, Matthias M.
Munnelly, Pierce
Heindel, Tobias
Kamp, M.
Höfling, S.
Schneider, C.
Reitzenstein, Stephan
Type: Article
Language Code: en
Abstract: We demonstrate the on-chip detection of light using photosensitive detectors based on quantum dot micropillar cavities. These microscale detectors are applied exemplarily to probe the emission of a monolithically integrated, electrically pumped whispering gallery mode microlaser. Light is detected via the photocurrent induced in the electrically contacted micropillar detectors under reverse-bias. In order to demonstrate the high potential and applicability of the microdetector presented, we determine the threshold current of an integrated microlaser to be (54 ± 4) μA, in very good agreement with the value of (53 ± 4) μA inferred from the optical data. Within this work, we realize the monolithic integration of a laser and a detector in a single device operating in the regime of cavity-quantum electrodynamics. Our results thus advance the research on microscale sensor technology towards the few-photon quantum limit and pave the way for on-chip opto-electronic feedback experiments.
Issue Date: 26-Feb-2016
Date Available: 23-Apr-2020
DDC Class: 530 Physik
Subject(s): on-chip
quantum dot
Sponsor/Funder: EC/FP7/615613/EU/External Quantum Control of Photonic Semiconductor Nanostructures/EXQUISITE
Journal Title: Applied Physics Letters
Publisher: American Institute of Physics (AIP)
Publisher Place: Melville, NY
Volume: 108
Issue: 8
Article Number: 081110
Publisher DOI: 10.1063/1.4942650
EISSN: 1077-3118
ISSN: 0003-6951
Notes: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 108, 081110 (2016) and may be found at
Appears in Collections:AG Optoelektronik und Quantenbauelemente » Publications

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