Post-doc rechearcher: Probing Many-Body Physics in Silicon Quantum Dot Arrays via RF Admittance Spectroscopy (M/F)

Job Description

Missions

The project aims to establish a new experimental platform for the study of artificial quantum materials based on large semiconductor quantum dot lattices.
By combining extended one-dimensional and bilinear arrays with high-sensitivity RF admittance spectroscopy, the project seeks to access the complex charge susceptibility, collective excitations, and emergent many-body phenomena in programmable electronic systems. The long-term goal is to bridge semiconductor quantum technologies and condensed matter physics, enabling the exploration of correlated charge and spin states in scalable quantum dot networks.

Activity

The successful candidate will:

• Develop experimental protocols for the operation and characterization of large quantum dot arrays in silicon-based semiconductor devices.
• Tune and control electron filling in one-dimensional and bilinear quantum dot lattices.
• Implement and optimize RF reflectometry and dispersive sensing techniques for the measurement of complex admittance and charge susceptibility.
• Design, characterize and improve microwave resonators for multiplexed readout, including the development of frequency-tunable resonators enabling spectroscopy over a broad frequency range.
• Investigate collective charge phenomena, charge delocalization, compressibility, and emergent modes in interacting quantum dot lattices.
• Compare experimental observations with theoretical models based on capacitance networks, Hubbard-type Hamiltonians, and many-body response functions.
• Contribute to the development of next-generation experiments targeting spin physics and collective spin phenomena in extended quantum dot arrays.

Your Profil

Skills

Applicants should hold a PhD in experimental condensed matter physics, quantum electronics, nanoscience, quantum engineering, or a related field. Experience in several of the following areas is highly desirable:

• Semiconductor quantum devices (quantum dots, spin qubits, mesoscopic transport).
• Cryogenic measurements and dilution refrigerators.
• RF and microwave techniques.
• RF reflectometry, resonator design, impedance matching, or circuit QED.
• Data acquisition and experimental automation (Python, LabVIEW or equivalent).
• Electronic transport measurements and charge sensing.
• Numerical modelling and data analysis. The ideal candidate will demonstrate strong experimental skills, scientific autonomy, and a willingness to work at the interface between quantum technologies and condensed matter physics.

Your Work Environment

Technologies originally developed for semiconductor quantum computing are now creating new opportunities for the exploration of artificial quantum materials. By engineering and controlling large-scale silicon quantum dot arrays, it becomes possible to investigate many-body phenomena in highly tunable electronic systems that have no direct equivalent in natural materials. This project aims to establish a unique experimental platform combining scalable quantum dot architectures with advanced RF spectroscopy to probe correlated charge and spin states.

The hosting team at Institut Néel is QuantECA (Quantum Electronic Circuits Alps), which form part of the QUEST department.

Institut NÉEL is a CNRS unit (UPR 2940) under agreement with the University Grenoble Alpes. The laboratory is related to the CNRS Physique. It is located in Grenoble, in the heart of a unique scientific, industrial and cultural environment. It is one of the largest French national research institutes for fundamental research in condensed matter physics enriched by interdisciplinary activities at the interfaces with chemistry, engineering and biology. It consists of 450 employees, including 175 researchers.
CNRS is a public, scientific and technological organization.
The core mandate is to identify, to carry out or to have carried out, either alone or with partners, all research that advances science or contributes to the country's economic, social, and cultural progress. Internationally recognized for the excellence of its scientific research, the CNRS is a reference in the world of research and development, as well as for the general public.

Compensation and benefits

Compensation

Between 3041,58 € and 3467,33 € gross monthly according to experience

Annual leave and RTT

44 jours

Remote Working practice and compensation

Pratique et indemnisation du TT

Transport

Prise en charge à 75% du coût et forfait mobilité durable jusqu’à 300€

About the offer

About the CNRS

The CNRS is a major player in fundamental research on a global scale. The CNRS is the only French organization active in all scientific fields. Its unique position as a multi-specialist allows it to bring together different disciplines to address the most important challenges of the contemporary world, in connection with the actors of change.

CNRS

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