On-chip light detection using monolithically integrated quantum dot micropillars

M M Karow; P Munnelly; T Heindel; M Kamp; Sven Höfling; C Schneider; S. Reitzenstein

doi:10.1063/1.4942650

On-chip light detection using monolithically integrated quantum dot micropillars

M M Karow, P Munnelly, T Heindel, M Kamp, Sven Höfling, C Schneider, S. Reitzenstein

Research output: Contribution to journal › Article › peer-review

Abstract

We demonstrate the on-chip detection of light using photosensitive detectors based on quantum dot (QD) 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 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.

Original language	English
Article number	081110
Journal	Applied Physics Letters
Volume	108
Issue number	8
DOIs	https://doi.org/10.1063/1.4942650
Publication status	Published - 22 Feb 2016

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© 2016 AIP Publishing LLC. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at http://dx.doi.org/10.1063/1.4942650
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title = "On-chip light detection using monolithically integrated quantum dot micropillars",

abstract = "We demonstrate the on-chip detection of light using photosensitive detectors based on quantum dot (QD) 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 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.",

author = "Karow, {M M} and P Munnelly and T Heindel and M Kamp and Sven H{\"o}fling and C Schneider and S. Reitzenstein",

note = "This work was supported by the German Research Foundation (DFG) under Grants RE2974/9-1 and SCHN1376/1-1. The research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework ERC Grant Agreement No. 615613. ",

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doi = "10.1063/1.4942650",

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AU - Munnelly, P

AU - Heindel, T

AU - Kamp, M

AU - Höfling, Sven

AU - Schneider, C

AU - Reitzenstein, S.

N1 - This work was supported by the German Research Foundation (DFG) under Grants RE2974/9-1 and SCHN1376/1-1. The research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework ERC Grant Agreement No. 615613.

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N2 - We demonstrate the on-chip detection of light using photosensitive detectors based on quantum dot (QD) 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 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.

AB - We demonstrate the on-chip detection of light using photosensitive detectors based on quantum dot (QD) 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 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.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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On-chip light detection using monolithically integrated quantum dot micropillars

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