Quantip
Région Ile de France
05/02/2026

News > Job > Offre de stage
Introduction to optical characterization of quantum nanodiamonds

Laboratory : Institut de Recherche de Chimie Paris
Place : Chimie ParisTech, CNRS, PSL Université, Paris 5è
Manager : Mary De Feudis; mary.de-feudis@cyu.fr
Offer

Context

This short-term internship aims to introduce the student to the field of quantum nanodiamonds and to the main optical characterization techniques used in physics and materials science. It is carried out within the framework of the NanoG4V project (PI M. De Feudis), funded by the French National Research Agency (ANR), which aims to produce a new generation of high-quality, quantum-grade nanodiamonds for a wide range of applications, such as extreme-condition sensing, nanoscale thermometry, and live-cell dual-color imaging. The student will join the CQSD group of the MPOE team at the IRCP Institute.

Internship

The student will be trained in the study of nanodiamond samples using Raman spectroscopy and photoluminescence (PL) at room temperature, employing different laser wavelengths (green, red, blue). The measurements will allow the identification of diamond and graphite phases, as well as different color centers, such as silicon-vacancy (SiV) and nitrogenvacancy (NV) centers, and the understanding of their spectroscopic signatures. The internship will include a strong experimental component: sample preparation and handling, hands-on use of a Raman/PL spectrometer (Renishaw software), understanding of the general operation of the instrumentation and its electronics. Particular attention will be devoted to data processing and analysis. The student will learn how to exploit experimental results using scientific
software (Origin, etc.) to produce high-quality graphs, perform mathematical fitting procedures, and generate 3D representations. An introduction to data structuring and compatibility between different file formats (e.g. between Python and Origin) will also be provided. The internship will be supervised by the Ass. Prof. Mary De Feudis (project leader) and a PhD student, within an active and stimulating international research environment.

Perspectives

For interested students, this internship may lead to higher-level internships, including the processing of data obtained at the SOLEIL synchrotron (tomography, radiography, X-ray diffraction).

03/02/2026

News > Job > Offre de stage
Electro-optic response in layeredin-plane-polarized ferroelectric thin films

Laboratory : Laboratoire Albert Fert
Place : 1 avenue Augustin-Fresnel, 91767 Palaiseau, France
Manager : Elzbieta Gradauskaite, elzbieta.gradauskaite@cnrs-thales.fr
Offer

Scientific Context

Layered Carpy-Galy oxides (general formula AₙBₙO₃ₙ₊₂, e.g. La2Ti2O7) are a versatile family of ferroelectric materials consisting of perovskite blocks separated by additional oxygen planes. Their uniaxial in-plane polarization, arising from cooperative oxygen octahedral rotations, makes them fundamentally different from conventional ferroelectric perovskites and potentially valuable for electro-optic applications (e.g. photonic integrated circuits). In our laboratory, through epitaxy we stabilized high-quality, single-crystalline thin films of these compounds, with nearly fourfold increase in ferroelectric polarization [1]. This opens the way to investigate their electro-optic properties, in particular, the Pockels effect, which describes the linear modulation of refractive index of a material under an applied electric field. Studying this effect in layered ferroelectrics will provide insight into how their uniaxial in-plane polarization influence electro-optic coefficients, thus evaluating their potential for compact on-chip electro-optic
modulators [2].

Work program & skills acquired during internship

During the internship, the student will learn the basics of thin-film structural characterization (X-ray diffraction, atomic force microscopy) to determine film orientation and quality; perform ellipsometry measurementsto extract the refractive indices and assess the material’s birefringence; set up and carry out electro-optic coefficient measurements using a laser, Soleil-Babinet compensator, polarizer, and photodiode combined with lock-in amplifier detection [3] to quantify the effective electro-optic coefficients; compare results with theoretical predictions/canonical ferroelectric materials and uncover how the anisotropic layered structure and uniaxial in plane polarization affect electro-optic properties.
The project will primarily focus on thin-film optical characterization and data interpretation, with a brief
introduction to material properties. The knowledge in optical measurements (ellipsometry, birefringence, etc.) is a plus.

  1. Gradauskaite, E. et al. Adv. Mater. 37 (12), 2416963 (2025).
  2. Abel, S. et al. Nat. Mater. 18, 42 (2019).
  3. Sando, D. et al. Phys. Rev. B 89, 195106 (2014).

Work environment

You will be working under the supervision of: Elzbieta Gradauskaite (elzbieta.gradauskaite@cnrs-thales.fr , CNRS), Manuel Bibes (CNRS), Jérôme Bourderionnet (Thales), Gilles Feugnet (Thales).

03/02/2026

News > Job > Offre de stage
Dynamic strain engineering of the metal-insulatortransition in nickelates for thermo-optical applications

Laboratory : Laboratoire Albert Fert
Place : 1 avenue Augustin-Fresnel, 91767 Palaiseau, France
Manager : Lucia Iglesias, lucia.iglesias@cnrs-thales.fr
Offer

Scientific Context

Rare-earth perovskite nickelates (RNiO₃, with R a rareearth element) are correlated oxides that exhibit sharp, tuneable metal–insulator transitions (MITs). Their electronic properties are highly sensitive to lattice distortions and strain (Fig. 1), making them excellent model systems for studying structure–property coupling in quantum materials. Our group has demonstrated that the MIT in nickelate thin films can be shifted toward room temperature by mixing Sm and Nd in controlled ratios, opening opportunities for
device-oriented applications. Building on this progress, the proposed project aims to achieve active and reversible control of the transition through strain engineering. Epitaxial films will be grown on piezoelectric substrates (BaTiO₃ or PMN-PT), where an applied gate voltage dynamically modulates the biaxial strain and, consequently, the MIT. The resulting strain-driven tuning will be explored through
transport and infrared optical measurements to realize dynamically tuneable properties relevant for thermo-optical applications.

Work program & skills acquired during internship

The student will grow and optimize nickelatesthin films of selected compositions using Pulsed Laser
Deposition (PLD) technique on piezo electric substrates. He/she will also perform a complete structural
characterization of the thin films through X-Ray reflectivity (XRR), X-Ray diffraction (XRD), Reciprocal
Space Map technique (RSM) and Atomic Force Microscopy (AFM). Resistivity measurements as a
function of the temperature and gate voltage will determine the influence of strain on the metal-insulator
transition, while optical characterization, including thermal reflectance, emissivity measurements and
ellipsometry, will assess the strain-dependent infrared behaviour. Experience with electrical transport
and optical characterization techniques will be considered an asset, along with strong experimental
skills, data analysis capabilities, and the ability to work effectively in an interdisciplinary environment
bridging academic research and industrial innovation.

Work environment

You will be working under the supervision of: Lucia Iglesias (CNRS) and Julian Peiro (Thales) at
Laboratoire Albert Fert located in Thales Research and Technology building on the Paris-Saclay campus.

03/02/2026

News > Job > Offre de stage
Ferroelectric-metallic BaTiO3 thin films grown by hybrid MBE for non-volatile field-effect devices

Laboratory : Laboratoire Albert Fert - Centre de Nanosciences et de Nanotechnologies
Place : 1 avenue Augustin-Fresnel, 91767 Palaiseau, France
Manager : Manuel BIBES, manuel.bibes@cnrs-thales.fr
Offer

Scientific Context

Ferroelectrics are polar materials whose switchable polarization can be used to store non-volatile information. Among them, BaTiO₃ (BTO) stands out for its low-voltage switching and high endurance in thin-film form. Remarkably, BTO can also become conducting when doped with electrons, leading to a rare coexistence of ferroelectricity and metallicity. This unconventional combination raises key questions: how do structural distortions, carrier density, and electrostatic screening interact at the nanoscale? How does this balance evolve with film thickness, doping level, or epitaxial strain? Beyond fundamental interest, creating a 2D conducting channel – either a two-dimensional electron gas (2DEG) or a lightly
doped polar metal – within the same ferroelectric matrix offers a new route to mitigate interface defects that limit the performance of ferroelectric field-effect transistors (FeFETs).

Work program & skills acquired during internship

The goal of the internship is to grow epitaxial BaTiO3 films by hybrid molecular beam epitaxy (MBE), a technique enabling atomic-scale control and the highest material quality. The intern will:

  • Learn and assist in the operation of the hybrid-MBE system to deposit BTO and SrRuO3 bottom electrodes;
  • Characterize films using X-ray diffraction, atomic-force microscopy, pizeoresponse-force microscopy and electrical measurements;
  • Generate and study ultrathin conducting layers in BTO, either by controlled La doping or by inducing a 2DEG at the surface;
  • Fabricate SRO/BTO/SRO capacitors and measure ferroelectric properties (switching voltage, endurance, retention);
  • Use conducting BTO layers as channels for FeFETs, and analyze their transport characteristics.

This internship will provide strong hands-on experience in thin-film growth, advanced characterization, and device physics. Depending on progress, it can be extended into a PhD thesis focusing on the physics and applications of ferroelectric-metallic oxides.

Work environment

You will work at C2N with Thomas Maroutian for film growth, and at the Laboratoire Albert Fert with Manuel Bibes for ferroelectric characterization and device studies.

26/01/2026

News > Headline
‘Lumière sur la quantique’: between the strange and the wonderful

On Wednesday, January 21, 2026, quantum science and technology research organizations held a day of outreach dedicated to these disciplines. Here’s a look back at the highlights of the day and the joys of sharing scientific knowledge.

Quantum physics: it’s for everyone

At the beginning of 2025, UNESCO declared the International Year of Quantum Science and Technology open. There was excitement in academic circles operating in the Île-de-France region: What to do? How to honor quantum physics? How to take advantage of this special year?

On the initiative of QICS, DIM QuanTiP, Quantum Saclay, PCQT, and SFP, with the help of Atouts Sciences, a series of meetings are organized with a single goal in mind: to share knowledge about quantum physics with as many people as possible. The Science Festival, activities in high schools and middle schools, conferences for the general public, laboratory visits—it’s all continuing! What’s more, this year is above all an opportunity to co-create a unique, unprecedented event, all together. It is from this desire to bring people together and join forces that the “Lumière sur la quantique” (Light on Quantum) project, led by DIM QuanTiP, was born.

With the aim of ending the International Year of Quantum Science and Technology on a positive note, organizations are working together to set up a day of outreach entirely dedicated to quantum science.

A unifying initiative

Academic research in quantum physics is flourishing in the Paris region. France is a key player in the development of quantum technologies and in the quality of research in this field, with no fewer than two Nobel Prizes in five years, dozens of competitive start-ups, numerous laboratories, and a government commitment to supporting these projects.

At the “Lumière sur la quantique” day, the challenge of representing the complexity of the academic world is omnipresent. It is an exceptional opportunity to showcase the research of the entire region, with the presence of laboratories from Cergy, Villetaneuse, central Paris, and Paris-Saclay, as well as the participation of schools such as Polytechnique.

Coming together to understand the ecosystem behind the mysterious word “quantum,” uniting to develop a simple and accessible discourse, sharing to break down barriers and clarify these sometimes counterintuitive concepts. The multidimensional challenges of “Lumière sur la quantique” constitute a first bridge between the academic world and the general public.

When the strange amazes

On the morning of January 21, 2026, at the LUMEN center at Paris-Saclay University, the sun shines down on the experiments and games planned for the day. It joined the wanderings of high school seniors from neighboring schools and curious visitors making their way between the tables. The tables overflowed on both sides, between the more or less imposing devices, the computers that controlled them, and the diagrams that explained them.

In total, seven stands are filled with all kinds of experiments to try out, and four areas are taken over by various board games. Behind each stand, doctoral students, researchers, and post-doctoral students are busy discussing, explaining, and diagramming what is happening in front of the audience.

At one end of the room, magnets levitate thanks to a superconducting material and liquid nitrogen; at the other end, someone tries to align mirrors using a switch controller. In the auditorium opposite, people try to understand why the Cheshire Cat gradually disappears, leaving only his smile behind. In the stands, videos play one after the other, alternating between scientific concepts and images of research laboratories.

The excitement spreads, and at noon, everyone goes to talk to the other exhibitors to understand, get to know each other, but above all to talk about quantum physics. The rest of the day is calmer but no less enriching. The explanations resume in good spirits and the feedback is positive.

Finally, the sun slowly sets, giving way to a restful calm. In no time at all, all the tables are cleared, the posters taken down from the walls, and the bags closed. It’s as if nothing ever happened, with the photos being the only witnesses to the light shared that day.

23/01/2026

News > Event
Initiation to awareness

8
avril
2026
09:00:00 - 17:00:00

Place : Sorbonne Université

Website

What is valorization? How do you undertake a project at the interface between research and industry? What are the rules? How can you get the right support?

Valorizing research raises so many questions that it can sometimes scare off even the most courageous individuals attempting to set up their own projects. The QuanTiP DIM offers you the opportunity to learn about the world of entrepreneurship through the experiences of those who have embarked on this adventure.

During this day dedicated to the industrial valorisation of research, you will talk with professionals in the field to discover possible paths to entrepreneurship.

More information to come.

23/01/2026

News > Event
DIM QuanTiP Annual Meeting 2026

12
mai
2026
09:00:00 - 18:00:00

Place : USPN, Institut Galilée, 99 avenue Jean-Baptiste Clément 93400 VILLETANEUSE

Website

The QuanTiP annual meeting is back. It’s time for a review of our annual highlights! The day will be held at Sorbonne Paris Nord University and be dedicated to the four axes of the DIM.

Registration and details on the website.

07/01/2026

News > Event
National Photoemission Spectroscopy Days 2026

20
mai
2026
-
22
mai
2026

Place : Sorbonne Université

Website

The National Photoemission Spectroscopy Days bring together the French-speaking photoemission spectroscopy community under the leadership of the Photoemission Spectroscopy Research Federation.

07/01/2026

News > Event
Event in honor of Philippe Grangier “From single photons to continuous variables: 40 years of advances in quantum optics”

4
juin
2026

Philippe Grangier retired this year as Director of Research at the CNRS. A group of his former doctoral students and colleagues, coordinated by the Quantum-Saclay center, in conjunction with the senior management of the Institut d’Optique Graduate School, are planning to organize an event to honor his scientific contributions and thank him for his work in structuring and coordinating communities in the Île-de-France region and at the European level.

07/01/2026

News > Event
Precision Physics Symposium in Paris region: measurements of fundamental constants and physics beyond the Standard Model

9
avril
2026
-
10
avril
2026

Place : Sorbonne université

This symposium brings together numerous precision physics groups from the Île-de-France region and high-level international speakers to establish new avenues for research and collaboration.