Quantip
Région Ile de France
07/05/2026

News > Job > Offre d'emploi permanent
Research and Development Engineer, responsible for the integration and operation of an optical test platform for quantum sensor components and radio frequency field metrology

Laboratory : LuMIn
Place : 4 avenue des sciences, Gif-sur-Yvette
Offer

Missions

Development of laser and optical systems and operation of a test platform for quantum sensors for radio frequency field metrology

  • Manage an optical test platform for radiofrequency quantum field sensor components
  • Develop, simulate, and optimize the components of the test platform (lasers, control systems, detectors, atomic cells, modulators, RF circuits, etc.)
  • Manage external collaborations to provide access to the platform’s resources for the community of developers and users of radiofrequency quantum field sensors
  • Participate and contribute to the organization and activities of the host laboratory: organizing and participating in scientific events (e.g., seminars, future-oriented workshops), participating in various laboratory bodies (e.g., laboratory council, thematic working groups), and participating in communication initiatives about the laboratory.
  • Conduct negotiations with a supplier
  • Manage a budget
  • Conduct scientific and technological monitoring

Profile

Knowledge:

  • Laser technology and control systems for metrology
  • Photonics components
  • Digital and/or analog electronics
  • Finite element simulations for radiofrequency electromagnetic fields

Operational skills:

  • Integrate a range of elements from different technological fields (optics, lasers, electronics, data acquisition, radio frequencies)
  • Lead a project in a national or international context and in partnership with industry partners
  • Use field-specific software (Python, MATLAB, High-Frequency Structure Simulator, Alkali Rydberg Calculator library)
  • Participate in the supervision of young researchers
  • Facilitate a meeting
  • Apply health and safety regulations
  • Apply public procurement regulations
  • Project management
  • English level B2

Soft skills:

  • Ability to work in a team
  • Organizational skills
  • Attention to detail

Context

The Light, Matter, and Interfaces Laboratory is a joint research unit (UMR 9024) of the CNRS, ENS Paris-Saclay, Paris-Saclay University, and CentraleSupélec, located on the Saclay Plateau (Orsay and Gif-sur-Yvette). It comprises approximately 30 permanent researchers and faculty members, about ten technical and administrative staff, and approximately 40 doctoral students and non-permanent researchers. The laboratory specializes in photonics applied to various fields of physics, engineering, materials science, biology, and quantum technologies. The engineer will be a member of the laboratory’s technical department, reporting directly to the unit director. He or she will primarily work on the radiofrequency quantum field sensor development platform located in Building 505 of the Orsay School of Sciences, in collaboration with two permanent LuMIn researchers, postdoctoral fellows, technicians (mechanical, laser, and electronics), engineers, and Ph.D. students from LuMIn, as well as partner laboratories and industry partners, both French and international, in order to make the platform’s resources available to the community and to contribute to the technological development of radiofrequency quantum field sensors.

30/04/2026

News > Event
ImmersION

25
juin
2026
-
12
sept.
2026

Place : L'Aiguillage, 19 rue des frigos, Paris 13e

Step into the heart of the Materials and Quantum Phenomena Laboratory at Université Paris Cité. In collaboration with L’Aiguillage, Lilay Gros-Desormeaux, a doctoral student at the MPQ, has curated this exhibition that blends art and science.

Drawing on her experience in science communication and her desire to combine it with her artistic sensibility, Lilay Gros-Desormeaux reached out to L’Aiguillage. From this instant connection and shared values, the exhibition ImmersION was born. It is at L’Aiguillage’s premises that the works will come to life. The exhibition will welcome diverse audiences with the aim of exploring science through the lens of art and building a solid bridge between the two fields.

This exhibition brings together artists from various backgrounds, who, through their works, depict the world of the laboratory—both scientific concepts and everyday life. Straddling knowledge and aesthetics, ImmersION is an invitation to question the boundaries between these fields.

The accompanying program will be announced as it becomes available.

Image : © Cordélia Beaudequin, plasticienne. Pastel et fusain.

01/04/2026

News > Headline
Quantum Physics: the Heart of Paris Cité University

Paris Cité University unveils its new website entirely dedicated to quantum science and technology!

As the Paris region continues to prioritize quantum science, Paris Cité University is taking the lead by bringing together all its initiatives related to the field on a single website. For years, the Paris-based university has been a driving force in the quantum field. Its research teams cover all major academic topics, from quantum computing to quantum sensors and from simulations to quantum communication.

With the goal of bringing all these projects together, the “Quantum UPCité” website has been launched. There, you can find all the information on the various networks, projects, and latest publications.

All you have to do is click!

website
26/03/2026

News > Event
Light-based Quantum Technologies

16
avril
2026
09:00:00 - 18:00:00

Place : Collège de France

Website

As part of the Collège de France Technological Innovation Chair, Pascale Senellart is pleased to invite you to the conference “Light-based Quantum Technologies”, dedicated to recent advances in photonic quantum technologies.

This conference will bring together experts in light-based quantum technologies, covering a broad range of potential applications. It will highlight current progress in the field while also addressing future challenges.

👉 Program and details: https://www.college-de-france.fr/fr/agenda/colloque/light-based-quantum-technologies

25/03/2026

News > Job > Offre de stage
Vibrational properties of a pulse-tube cryostat for quantum metrology

Laboratory : Laboratoire Temps-Espace
Place : Observatoire de Paris
Manager : Bess Fang-Sortais
Offer

Background

Time and frequency metrology is one of the most successful fields of high accuracy measurement today. Microwave and optical frequency standards now realize accuracies in terms of fractional frequency in the 10-16 range, ensuring a vast variety of applications from practical day-to-day time keeping (realization of SI second, atomic international time, satellite navigation systems, timing and synchronization at various geographical scales, etc…) to the most demanding fundamental research experiments (measurement of the drift of fundamental constants, tests of relativity, detection of gravitational waves, …). One of the key components in an optical atomic clock is an ultra-frequency-stable laser source, which is used to determine precisely the frequency of the atomic transition. Whereas standard high-finesse Fabry-Perot cavities, acceptable for many applications, provide a fairly good fractional frequency instability at a low 10-16 level between 0.1 s and 10 s averaging time at their thermal Brownian noise limit, further improvements are needed to meet the stringent requirement of quantum projection noise in optical lattice clocks, expected to reach 10-17 or below at 1 s. Among various technologies explored, low-vibration pulse-tube cryostats have emerged to become a key enabling technology, permitting to cool down both monocrystalline silicon cavities and rare-earth ion doped crystals to desired working temperatures, ranging from 124 K down to 100 mK. Whereas the choice of all-electric dry cryostats is motivated by the possibility of continuous operation without periodic cryogen refill, the vibration generated by the pulse-tube must be properly managed.

Project

Various experimental means have been developed in the frequency metrology community to quantify the vibration level of the cryostats, using commercial mechanical sensors (accelerometers and seismometers), measuring the acceleration or the velocity in the inertial reference frame, and using optical interferometers to measure the position with respect to a reference plane. However, most mechanical sensors are cryoincompatible, limiting the accessible information. The optical interferometer, on the other hand, gives directly the information at the position of the object being cooled down, but it is difficult to access information at intermediate positions which are often not equipped with optical access. A possibility to complement such effort in characterization of vibrational properties of a cryo-cooled object is to numerically simulate the mechanical properties of the cryostat, using a staged approach. The mechanical transfer function can be obtained by finite-element simulations once the architecture as well as material properties are known. Since there are different stages of thermal isolation, which is critical to the normal function of the cryostat, it is natural to break down the overall mechanical transfer function into that of each thermal isolation stage, reducing the complexity of the simulation.

The purpose of this internship is twofold. The candidate will first identify appropriate numerical tools and carry out simulations of various stages of thermal isolation to evaluate their mechanical transfer function. It is also necessary to identify potential resonances within the relevant frequency band that may strongly impact the final spectroscopy experiment. He/she will then compare with accelerometric measurements and possibly carry out new measurements at critical positions to feed the comparison process. Structural improvement could be identified in order to reduce the vibration level of the sample holder.

Scope

The successful applicant will carry out the activities described above, while interacting with the rest of the team working on the experiment of rare-earth spectroscopy for laser frequency stabilization. The internship should span 2 months or more (duration negotiable). The start date is flexible.

The applicant

Serious, motivated and professional, with a training in mechanical engineering. Some experience in vibration analysis and thermal analysis is useful, but not a strict requirement. Given the collaborative nature and international context of the overall research project, communication in English must be practiced.

Application

Interested candidates should send a CV and a motivation letter to: Dr. Bess Fang-Sortais : bess.fang@obspm.fr. Interviews will be arranged once the documents are examined.

24/03/2026

News > Job > Offre de stage
Advanced spectroscopy of thulium-doped crystals for analog processing of broadband signals

Laboratory : Institut Langevin
Place : 1 rue Jussieu, Paris
Manager : Anne Louchet-Chauvet
Offer

Context

The Langevin Institute is developing advanced applications in analog broadband signal processing, utilizing light-matter interactions in crystals doped with thulium ions (Tm³⁺). These crystals, cooled to low temperatures (around 3K), must meet stringent specifications, in which the linewidth of the optical lines, the lifetime of the populations, and the decoherence induced by the excitation of the ions themselves must remain within very precise limits.

To date, YAG (Y₃Al₅O₁₂) has been the preferred host matrix, enabling, in particular, the development of an industrial demonstrator in partnership with Thales Research & Technology. However, the limitations of commercial cryogenic solutions (vibrations, cooling capacity) degrade the crystals’ nominal properties, particularly during the large-scale preparation of ions. This directly impacts the efficiency and dynamics of signal processing.

Objectives

The objective of this internship is to explore new crystal matrices (e.g., YGG, co-doped crystals, molecular crystals, waveguides) to identify alternatives to YAG that are capable, for example, of:

  • Increasing the lifetime of populations at a given temperature (reducing the required laser power, which leads to a reduced thermal load),
  • Attenuate vibration propagation (softer materials, allowing for improved vibrational isolation),
  • Guide light in such a way as to effectively lengthen the optical path within the sample, while maintaining optimal light-matter interaction. This approach would allow work at lower ionic concentrations, thereby limiting excitation-induced decoherence.

The intern will perform advanced spectroscopic measurements in the laboratory (photon echo, spectral hole burning, etc.). These techniques will enable the precise characterization of crystal properties: optical absorption, the lifetime of populations, as well as decoherence mechanisms, using experimental optical techniques (tunable lasers, ultra-sensitive detectors, laboratory cryogenics).

Profile

This internship is particularly suited to students seeking to acquire practical skills in experimental optics and advanced spectroscopy, within a context that is both fundamental and applied. The targeted applications, such as quantum memories or broadband atomic processors, provide a stimulating and concrete context. By actively participating in these experiments, the intern will gain valuable and versatile experience at the heart of a dynamic research project conducted in collaboration with an industrial partner.

Desired profile: Master’s 1 or 2 student, or engineering school student with a specialization in optics or physics. A passion for experimental work is essential. Knowledge of lasers and/or light-matter interactions is appreciated to confidently tackle the project’s technical challenges.

CONTACT: anne.louchet-chauvet@espci.fr

04/03/2026

News > Job > Offre d'emploi permanent
Research engineer specializing in nano and macro-manufacturing

Laboratory : Laboratoire Kastler Brossel
Place : Jussieu, Paris 5e
Wage : 3237€
Offer

Missions

The Kastler Brossel Laboratory is looking to recruit a research engineer specializing in nano and microfabrication to lead projects involving the design, manufacture, and characterization of original devices at the micro- and nanometric scale. Working closely with several teams within the laboratory and in coordination with the various clean rooms in the Paris region to which the laboratory has regular access, the engineer will play a central role in developing processes tailored to scientific needs, structuring expertise, and enhancing the laboratory’s skills in the field of quantum technologies.

Activity

The engineer will join a high-level research environment within the laboratory’s “Quantum Information and Optics” division and will be involved in all stages of experimental device development, from design to implementation in the clean room.

  • Design, manufacture, and characterize complex devices based on nano- or micro-manufacturing processes in clean rooms; develop new devices, from the substrate to the complete packaging.
  • Study scientific needs, propose solutions, and develop new manufacturing and characterization processes.
  • Negotiate functional specifications and draft technical specifications.
  • Organize the monitoring of the project’s progress, validate and qualify the device at its various stages.
  • Manage all technical and financial resources allocated to projects, including orders and the storage of consumables.
  • Ensure access to and coordination with clean rooms in Paris and the Paris region; liaise with the various clean room managers.
  • Keep up to date and receive training as necessary on the equipment used in clean rooms.
  • Monitor technological developments; maintain and enhance in-house design/simulation software.
  • Present, disseminate, and promote achievements.
  • Participate in promotion projects involving nano- or micro-manufacturing.
  • Advise, train, and inform researchers working in clean rooms on the principles and implementation of manufacturing and characterization processes; ensure safety and compliance with rigorous scientific methods.

Profile

Expertise:

  • Techniques in the field of nano and micro-manufacturing: laser and electron lithography (20 keV and 100 keV), plasma etching (RIE, ICP-RIE), FIB… (in-depth knowledge).
  • Engineering techniques and sciences (optics, microwaves, electronics, programming, mechanics, chemistry) (general knowledge).
  • General physics and physics in the relevant field (radiation, matter, thermodynamics, etc.) (general knowledge).
  • Environment and professional networks (general knowledge).
  • Written and oral presentation techniques.
  • English language: B1 to B2 (Common European Framework of Reference for Languages).

Skills:

  • Combine a set of elements from different technological fields.
  • Manage a project.
  • Use field-specific software.
  • Lead a meeting.
  • Conduct negotiations.
  • Apply quality assurance procedures.
  • Apply health and safety rules.
  • Manage a budget.
  • Apply public procurement regulations.
  • Monitor technological developments.

Environment

The Kastler Brossel Laboratory (LKB) is a joint research unit of the French National Center for Scientific Research (CNRS), the École Normale Supérieure (ENS), Sorbonne University (SU), and the Collège de France. Internationally renowned in the field of quantum physics, it comprises 11 research teams and several administrative and technical departments, involving nearly 200 people. The laboratory is spread across three sites in Paris (ENS, SU, and Collège de France), but the position will be based at Sorbonne University (SU).
The position is part of the “Quantum Information and Optics” research area, which brings together several teams developing original experimental devices requiring advanced micro- and nanofabrication processes. These devices include superconducting circuits, optomechanical resonators, optical nanoguides, and hybrid photonic structures.

The engineer recruited will play a central role in structuring this cross-disciplinary activity within the laboratory. He or she will ensure technical coordination with the various clean rooms in the Paris region (mainly ENS, INSP, Paris Cité, but also Collège de France, CEA, LPS Orsay, etc.), participate in the pooling and documentation of processes, contribute to user training, and ensure the continuity of know-how between generations of doctoral and post-doctoral students.

The position is part of a drive to enhance the LKB’s manufacturing capabilities, already supported by significant investments in shared equipment, and will enable the laboratory to play a full role in the ongoing developments in the field of quantum technologies.

26/02/2026

News > Event
Quantum night in Paris

31
mars
2026
18:00:00 - 22:00:00

Place : Auditorium de la Cité des sciences, La Villette

Website

The French Physics Society, in partnership with the Cité des Sciences, is hosting an exceptional evening hosted by Anatole Chouard to learn all about quantum mechanics, from general principles to quantum computers and the world of the infinitely small and the infinitely large.

24/02/2026

News > Publication
Biphoton state generation and engineering with bright hybrid III–V/silicon photonic devices

The QITE Photonics team at MPQ recently published an article in Optica Quantum.

  • Lorenzo LAZZARI
  • Jérémie SCHUHMANN
  • Othmane MESKINE
  • Martina MORASSI
  • Aristide LEMAÎTRE
  • Maria I. AMANTI
  • Frédéric BOEUF
  • Fabrice RAINERI
  • Florent BABOUX
  • Sara DUCCI

The QITE team at the MPQ Laboratory, in collaboration with STMicroelectronics, C2N, and INPHYNI, published a paper in Optica Quantum on the generation and engineering of two-photon states using III-V/SOI hybrid devices.

This study, featured on the cover of the February 25, 2026 issue, combines an AlGaAs photon-pair source with a silicon photonic platform, enabling room-temperature operation and full compatibility with standard semiconductor technologies.

Operating in the telecommunications C-band, the device delivers high photon-pair generation rates and excellent quantum signal quality. A new integrated coupling scheme allows the generated quantum state to be shaped and controlled directly on the chip.

This breakthrough is a key step towards the development of scalable, electrically driven quantum photonic systems for future applications in quantum communication and information processing.

Figure : Artist’s sketch of the hybrid device: photon pairs are generated in an AlGaAs waveguide. A coupling taper shapes and controls their wavefunction, then transfers them into the underlying silicon waveguide.

Read the article
24/02/2026

News > Event
European Quantum PhD Days

15
juin
2026
-
16
juin
2026
09:00:00 - 18:00:00

Place : Institut d'Optique Graduate School, Palaiseau France

Website

The European Quantum PhD Days are back at Paris-Saclay University. This event is exclusively for PhD students, giving you the opportunity to discuss your work, get to know each other, and enjoy some special moments together.

Register and submit an abstract for a talk or poster. Find all the information you need on the dedicated website