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Portail > Offres > Offre UMR5672-AUDBIE-002 - Post-docrorat (H/F) en circuits quantiques

Post-doctoral Researcher expert in quantum superconducting circuits

This offer is available in the following languages:
Français - Anglais

Date Limite Candidature : lundi 9 août 2021

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General information

Reference : UMR5672-AUDBIE-002
Workplace : LYON 07
Date of publication : Monday, June 28, 2021
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 1 September 2021
Proportion of work : Full time
Remuneration : Between 2675 and 3145 euros of gross monthly income.
Desired level of education : PhD
Experience required : 1 to 4 years


The post-doctoral project will center on developing and building an Electron Spin Resonance (EPR) spectroscopy tool based on quantum circuits technology. The aim of the project is to demonstrate the ability to detect and characterize samples with ultra-small volumes. The gain in absolute and concentration sensitivity will be based on earlier developments based on quantum circuits techniques [1-2], in particular high quality factor small mode volumes superconducting resonators and quantum-limited amplifiers. The candidate will namely work on building fast tunable matching circuits and integrated broadband quantum-limited detection circuits to extend these early experiments to short-lived species. A successful implementation of these circuits will enable the applicant to measure target species encompassing typical EPR characterization species, nitroxide labels and other markers, and protein crystals.
[1] A. Bienfait et al., Nature Nanotechnology, 11, 253–257 (2016)
[2] V. Ranjan et al., Applied Physics Letters 116 (18), 184002 (2020)


Simulation, fabrication, implementation and optimization of superconducting microwave resonators for the detection of electronic spins. Development of a ultra-sensitive detection chain for the microwave signals emitted by the spins, with fast bandwidth and frequency tunability to enable the detection of short-lived spins.


Required knowledge:
- Expert in pulsed electron spin resonance experiments, expert in experimental superconducting circuits and/or expert in quantum systems in condensed matter.
- Microwave engineering
- Mechanical and electrical engineering
- Quantum mechanics,
- Superconductivity
- Low temperature measurements

Required skills:
- Expert in microwave measurements
- Expert in low-temperature experimental physics
- Expert in programming languages (Python)
- Expert in Computer-assisted instrumentation and experimental data acquisition

Organization skills: supervising students, animating a meeting, keeping a science watch.
Respecting security and safety regulations.

Work Context

The post-doc will take place in the Quantum circuits group (physinfo.fr) at ENS de Lyon (http://www.ens-lyon.fr/en/about-us/who-we-are), which is an expert in quantum circuit technologies for quantum sensing and quantum information processing. The candidate will have access to numerical tools, and nanofabrication and cryogenics equipment.

Constraints and risks


Additional Information

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