Quantum Physics in Polariton Microcavities M/F

CNRS; France; Sur place; EUR 42 000 - 54 000; Plein temps

Résumé du poste

The CNRS Centre de Nanosciences et de Nanotechnologies (C2N) in Palaiseau invites applications for a First Stage Researcher position to study quantum polaritonics in semiconductor microstructures. The successful candidate will perform low-temperature optical spectroscopy at 4 K and develop numerical models to interpret the data.

Based in a dynamic group led by Sylvain Ravets and Jacqueline Bloch, you will collaborate with nanofabrication and theory teams, using 7 T magnets and advanced

Qualifications

• Experience in experimental optics, including the use of lasers, spectrometers, and cryostats.
• Proficiency in Python for data analysis and scientific computing (NumPy, SciPy, Matplotlib).
• Experience operating experimental equipment such as oscilloscopes, CCD cameras, and electromagnets. Knowledge of numerical modelling techniques, including transfer-matrix methods and Hamiltonian diagonalization.
• Ability to work independently and rigorously, as well as collaboratively within a multidisciplinary research environment.

Responsabilités

• Operate a 4 K cryostat and implementation of resonant spectroscopy experiments using tunable lasers and angle- and energy-resolved detection.
• Setup and calibration of experimental apparatus, including optical alignment and control of measurement parameters.
• Data acquisition and analysis, including spectra, images, and mode mapping.
• Development of numerical simulations in Python to reproduce the experiments and investigate the quantum properties of the microcavities.
• Presentation and discussion of results during weekly group meetings.

Connaissances

Experimental optics

Python for data analysis

Independent and rigorous work

Outils

Python (NumPy SciPy Matplotlib)

Oscilloscopes

CCD cameras

Electromagnets

Description du poste

Organisation/Company CNRS Department Centre de Nanosciences et de Nanotechnologies Research Field Physics Researcher Profile First Stage Researcher (R1) Application Deadline 20 Oct 2026 - 23:59 (UTC) 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? Horizon Europe - ERC Is the Job related to staff position within a Research Infrastructure? No

Offer Description

The project aims to investigate the quantum properties of polariton microcavities in semiconductor microstructures. The successful candidate will be responsible for the experimental characterization of these systems using low-temperature (4 K) optical spectroscopy, potentially under high magnetic fields. They will also develop numerical models of the structures to support the interpretation and optimization of the experimental results.

• 1- Operation of a 4 K cryostat and implementation of resonant spectroscopy experiments using tunable lasers and angle- and energy-resolved detection.
• 2- Setup and calibration of experimental apparatus, including optical alignment and control of measurement parameters.
• 3- Data acquisition and analysis, including spectra, images, and mode mapping.
• 4- Development of numerical simulations in Python to reproduce the experiments and investigate the quantum properties of the microcavities.
• 5- Presentation and discussion of results during weekly group meetings.

The position will be based at the Centre for Nanoscience and Nanotechnology (C2N) in Palaiseau, within the research group led by Sylvain Ravets and Jacqueline Bloch. The successful candidate will join a dynamic team working on quantum polaritonics, with regular interactions with nanofabrication (cleanroom) and theory teams.

The laboratory is equipped with liquid-helium cryostats, high-resolution spectrometers, laser sources, and superconducting magnets providing magnetic fields of up to 7 T.

This position is located in a sector subject to the Protection of Scientific and Technical Potential (PPST) regulations. In accordance with applicable regulations, the successful candidate's appointment is therefore subject to authorization by the competent authority of the French Ministry of Higher Education and Research (MESR).

• 1- Experience in experimental optics, including the use of lasers, spectrometers, and cryostats.
• 2- Proficiency in Python for data analysis and scientific computing (NumPy, SciPy, Matplotlib).
• 3- Experience operating experimental equipment such as oscilloscopes, CCD cameras, and electromagnets. Knowledge of numerical modelling techniques, including transfer-matrix methods and Hamiltonian diagonalization.
• 4- Ability to work independently and rigorously, as well as collaboratively within a multidisciplinary research environment.