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Portail > Offres > Offre UMR8023-YANTOD-020 - Post-doc (H/F) "Ultra-strong light-matter coupling in quantum detectors"

-Post-doc (H/F) "Ultra-strong light-matter coupling in quantum detectors"

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Français - Anglais

Date Limite Candidature : mercredi 3 février 2021

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General information

Reference : UMR8023-YANTOD-020
Workplace : PARIS 05
Date of publication : Wednesday, January 13, 2021
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 10 April 2021
Proportion of work : Full time
Remuneration : 2728.28 euros gross monthly (seniority less than or equal to 2 years)
Desired level of education : 5-year university degree
Experience required : Indifferent

Missions

The aim of the Post-Doc project is to explore quantum infrared detectors operating in the ultra-strong light-matter coupling regime. We will study devices where semiconductor quantum wells are integrated into electromagnetic resonators, “meta-atom”, featuring deep sub-wavelength electromagnetic confinement [1,2] . This geometry allows for ultra-low dark current and improved photo-generation rate [3]. In such devices, we will explore how the presence of polariton states affects the electronic transport of the device. A second objective is to export the metamaterial concepts developed so far for THz frequencies (lambda = 100µm) [1-3] to detectors operating in the IR medium (lambda = 10µm).

[1] M. Jeannin, et al. “Ultra-Strong Light-Matter Coupling in Deeply Subwavelength THz LC
resonators”, ACS Photonics 6 (5) 1207-1215 (2019).
[2] M. Jeannin, et al. “Absorption engineering in an ultra-subwavelength quantum system”, Nano Lett. 20 (6) 4430–4436 (2020).
[3] Jeannin et al. [4] M. Jeannin et al. “High temperature metamaterial terahertz quantum detector” , Appl. Phys. Lett. 117, 251102 (2020).

Activities

-Design of meta-materials compatible with the injection / readi-out of electric current in semiconductor devices.
-Clean room fabrication of semiconductor quantum wells-based absorbing regions inserted in metamaterials.
- Low temperature optical and electrical characteristics of devices.
-Theoretical modeling of data in order to understand the links between electronic transport and coupled light-matter states.

Skills

- Solid knowledge of physics of intersubband optoelectronic devices
- Optical and electrical characterizations of nano-devices.
- The candidate must have previous experience with devices operating in strong coupling regime in the mid- / far- infrared domain.

Work Context

This project is supported by the ERC project “UNIQUE” (https://erc.europa.eu/projects-figures/erc-fundedprojects/results?search_api_views_fulltext=todorov). The aim of this project is to explore the quantum effects of the ultra-strong light-matter coupling regime. The project will take place in the QUAD team of the Physics Laboratory of the Ecole Normale Supérieure, located in the Latin Quarter of Paris. In addition, the post-doc will benefit from full access to the clean rooms of the Paris Center consortium.

Constraints and risks

Standard risks associated with clean room fabrication. Risk training will be provided.

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