Job offer

Organisation/Company: Sorbonne Université SIS (Sciences, Ingénierie, Santé)

Research Field: Engineering » Electronic engineering

Researcher Profile: Recognised Researcher (R2), Leading Researcher (R4), First Stage Researcher (R1), Established Researcher (R3)

Country: France

Application Deadline: 17 Apr 2025 - 22:00 (UTC)

Type of Contract: Temporary

Job Status: Full-time

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

This thesis will take place in the frame of the ULTIMOS project. The idea is to probe proton to electron mass ratio variations comparing radioastronomy microwave spectra (0.1-100 GHz range) to laboratory-determined energy intervals obtained from mid-infrared (MIR) frequency differences.

The accuracy objective is below 100 Hz, corresponding to 12..13 digit precision measurement in the MIR. It is achievable using Système-International referenced quantum cascade lasers, frequency combs and non-linear optics techniques.

The different MIR frequencies will be measured using the spectrometers of the three partners of the ULTIMOS consortium and analysed all together for the microwave interval determination and comparison with astrophysics data.

Début de la thèse: 01/10/2025

WEB: https://www.lkb.fr/iontrap/research/research-topics/experiments/

Funding category: Autre financement public

ANR Financement d'Agences de financement de la recherche

Additional Information

Work Location(s)

Number of offers available: 1

Company/Institute: Sorbonne Université SIS (Sciences, Ingénierie, Santé)

Country: France

City: Paris