Job Information
Organisation/Company: Aix Marseille University
Department: IM2NP
Research Field: Physics » Solid state physics; Physics » Quantum mechanics
Researcher Profile: Recognised Researcher (R2)
Positions: Postdoc Positions
Application Deadline: 15 Oct 2026 - 17:00 (Europe/Paris)
Country: France
Type of Contract: Temporary
Job Status: Full-time
Hours Per Week: 35
Offer Starting Date: 1 Dec 2026
Is the job funded through the EU Research Framework Programme? Not funded by a EU programme
Is the Job related to staff position within a Research Infrastructure? No
Offer Description
Electron Spin Resonance (ESR) is a highly sensitive spectroscopic technique for probing paramagnetic species and spin dynamics in materials with unpaired electrons, and it plays a central role in the development of quantum technologies. Superconducting quantum circuits, another quantum technologies hardware, operating at millikelvin temperatures, have enabled quantum-limited detection and novel sensing architectures. Their integration with ESR has led to significant gains in sensitivity, down to extremely small ensembles of spins and coherent spin dynamics.
Most current superconducting ESR platforms, however, are based on low-Tc superconductors and are restricted to millikelvin operation. This is a major limitation for many ESR applications—especially those involving molecular systems, radicals, or chemically relevant dynamics—that require temperatures above 1 K. Extending superconducting ESR into this temperature range is therefore a critical step for broader impact. High-Tc superconductors (HTS) are a promising route to address this issue. HTS resonators can retain low microwave loss and high quality factors over a wide temperature range, making it possible to operate well above the limits of conventional low-Tc devices while maintaining high ESR sensitivity.
In low-Tc materials, the kinetic inductance has been engineered for in-situ frequency tuning and parametric interactions, leading to new ESR detection schemes and major sensitivity gains at millikelvin temperatures. This project proposes to translate and generalize that approach to HTS resonators for ESR above 1 K. Concretely, we will design, fabricate, and characterize HTS microwave resonators and its tunable kinetic inductance, to finally use them as the basis for a broadband ESR spectrometer operating above 1 K. This platform aim to provide wide frequency coverage with high sensitivity and will offer new possibilities to explore ESR spectra, and coherent spin dynamics in a variety of quantum-relevant systems, including but not limited to rare-earth ions and other promising spin ensembles.
Where to apply
E-mail: remy.dassonneville@univ-amu.fr
Requirements
Research Field: Physics » Solid state physics
Education Level: PhD or equivalent
Research Field: Physics » Quantum mechanics
Education Level: PhD or equivalent
Skills/Qualifications
The candidate must hold a Ph.D. in physics, nanosciences, or an equivalent. He/she should have a solid background in experimental condensed matter and quantum physics and be strongly motivated in instrumental development. Knowledges in superconducting microwave circuits and/or continuous and pulsed-waves ESR would strongly strengthen the candidate’s application. Skills in Python coding and electromagnetic simulations would also be appreciated.
Specific Requirements
The candidate must hold a Ph.D. in physics, nanosciences, or an equivalent.
He/she should have a solid background in experimental condensed matter and quantum physics.
Languages: ENGLISH
Level: Good
Additional Information
Benefits
Funding : ANR HIGHPOINT-EPR, for a 2 years contract.
Gross salary : from 2616.35 to 3062.56€/month, depending on experience.
Eligibility criteria
The candidate must hold a Ph.D. in physics, nanosciences, or an equivalent.
Selection process
Applications should be submitted in English by email to remy.dassonneville@univ-amu.fr and should include a curriculum vitae (CV) and the contact details of at least two academic or professional referees. Candidates selected for the next stage will be invited to a 30–60-minute videoconference interview. During the interview, candidates will be asked to present their previous research and relevant professional experience, followed by a discussion of the proposed postdoctoral project.
Additional comments
The starting date is flexible; the position will start as soon as a suitable candidate is identified.
Website for additional job details: https://www.im2np.fr/fr/equipe-magnetisme-mag
Work Location(s)
Number of offers available: 1
Company/Institute: IM2NP
Country: France
City: Marseille
Postal Code: 13013
Street: Av. Escadrille Normandie Niémen, Campus Saint-Jérôme
Contact
City: Marseille
Website: https://www.univ-amu.fr/
Street: Av Escadrille Normandie-Niemen
Postal Code: 13013
E-Mail: remy.dassonneville@im2np.fr
Phone: 0647611760
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