Quandela stands as a global leader in quantum computing, driven by groundbreaking technology and a strategic vision for scaling quantum solutions. The company’s unique ability to offer both hardware and software solutions, along with its commitment to build energy efficient quantum processing units that scale, positions it to play a key role in the next wave of innovation, and in many strategic and sovereign industrial sectors.
With a team of more than 140 people, we develop our own hardware and software stack, from semiconductor quantum emitters and photonic processors to quantum control systems and quantum algorithms.
Our ambition is to build large-scale fault-tolerant quantum computers capable of solving problems beyond the reach of classical computation using Quandela's cutting-edge quantum dot technology.
Achieving this vision requires not only advances in photonic quantum computing, but also the development of scalable spin-photon interfaces, distributed entanglement capabilities and future SPOQC (Spin-Optical Quantum Computing) architectures that will enable modular and fault-tolerant quantum systems.
Join Us at the Forefront of Quantum Computing Innovation 🚀
About this position:
We are seeking a Fabrication Engineer to join our Single-Photon Source Research Team, a multidisciplinary group of scientists and engineers working at the intersection of quantum dot emitters, photonic microcavities, advanced device fabrication, and characterisation.
The team focuses on enhancing the performance of our single-photon sources based on quantum-dots in micropillar cavities, with the goal of generating high-fidelity resource states for photonic quantum computing. By combining spin qubits with highly efficient light–matter interfaces, these devices form a key building block of Quandela’s hybrid spin-photon quantum computing architecture.
In this role, you will contribute to Quandela’s research road-map by advancing micropillar fabrication processes to improve device yield and performance, while also designing and developing next-generation devices. Your work will directly inform the research strategy for future production platforms and drive progress in the development of state-of-the-art single-photon sources.
Current challenges include increasing device brightness beyond the loss-tolerance thresholds required by quantum error-correcting codes, as well as substantially improving fabrication yield to produce large numbers of identical devices that emit mutually indistinguishable photons.
You must possess strong expertise in nano- and microfabrication processes (thin-film deposition, lithography, etching, etc.) and experience with the electrical and optical characterisation of devices. Success in this role depends on scientific rigor, exceptional attention to detail in device fabrication, and the ability to work effectively across teams with diverse technical backgrounds.
Responsibilities:
- Participate in the production of Quandela’s single-photon sources.
- Identify and improve fabrication steps impacting device performance.
- Conceptualise and test new designs for improved SPS brightness and indistinguishability.
- Implement a research road-map and ensure timely delivery of outcomes.
- Systematically document the results and report your findings (including patents, scientific publications and participation in international conferences).
- Collaborate with the production teams to transfer successful results.
Location:
Based at the IPVF campus in Palaiseau, within the Paris-Saclay research ecosystem.
Ideal profile:
- Master degree or higher in a relevant topic.
- 3 years’ experience (including PhD) in a research laboratory.
- Strong fundamentals in nano- and microfabrication processing techniques.
- Understanding of optical microcavities and nano-photonics.
- Proven ability to build and run complex experiments from the ground up.
- Software coding using Python or other common languages.
- Team player with an ability to work effectively across multiple projects and departments.
- Ability to work independently.
- Excellent verbal and written communication skills.
- Ability to maintain organized, frequent, and clear reporting.
Bonus points: experience in one or more of the following areas is highly appreciated:
- Quantum emitters
- Design and fabrication of cavity-based single-photon sources
- Advance characterisation of the optical and electrical properties of III-V semiconductor heterostructures
- Fabrication of VCSELS or other integrated laser devices
At Quandela, we value scientific curiosity, experimentation and collaboration. If you're passionate about nano- and microfabrication, single-photon physics and quantum technologies, we'd love to hear from you, even if you don't meet every listed requirement.
If you're excited by the challenge of turning scientific ideas into real devices, advancing the building blocks of future quantum computing systems, and working alongside physicists, engineers and theorists, let's talk.
- Competitive salary, flexible based on your experience and expectations
- Profit-sharing & company savings plan
- 100% health coverage (Alan)
- 50% transport reimbursement or sustainable mobility bonus
- Meal vouchers (Swile), Gymlib fitness support
- Childcare assistance & referral bonuses (€1,000–€2,000)
What we offer:
- A meaningful role with real ownership, from day one
- A team eager to collaborate and grow with you
- Daily exposure to the entire quantum stack — from high-level APIs to low-level firmware, and everything in between.
Process
- Talent Acquisition Interview (30' - 45')
- Hiring Manager Interview (45' - 60')
- Reference checks
- Technical discussion and presentation of previous research work
- Meeting with the team and scientific discussion around single-photon source fabrication
- Offer
At Quandela, we believe that the strength of our team is the plurality of experiences, perspectives, and journeys. We are committed to building a respectful, inclusive, and welcoming work environment. All applications are welcome.
TECHNICAL & MARKET ANALYSIS | Appended by Quantum.Jobs
The transition from experimental quantum photonics to industrial-scale quantum computing necessitates the standardization of high-performance single-photon sources. As the sector moves toward fault-tolerant architectures, the structural necessity for advanced fabrication expertise grows to resolve the yield and indistinguishability bottlenecks currently limiting the scaling of photonic processing units. This role type serves as a critical translation point between semiconductor physics and systems engineering, ensuring that foundational light-matter interfaces meet the stringent loss-tolerance thresholds required for quantum error correction. Verifiable market signals from the Quantum Economic Development Consortium and national technology strategies confirm that stabilizing the semiconductor-to-qubit value chain is essential for mitigating systemic risks in hardware deployment. By advancing the reproducibility of high-fidelity resource states, this function secures the physical foundation for modular, distributed entanglement capabilities within the emerging global quantum infrastructure.
The photonic quantum computing landscape is undergoing a decisive shift from laboratory proof-of-concepts to the integration of manufacturable, scalable components within high-performance computing ecosystems. While various hardware modalities exist, the primary constraint for optical quantum systems remains the deterministic generation of indistinguishable photons at scale. The current industry focus lies on bridging the "valley of death" between Technology Readiness Level 4 and TRL 7, where the transition from research-grade prototypes to production-grade modules is often hindered by sub-optimal fabrication yields and inconsistent device performance.
Workforce scarcity is particularly acute at the intersection of III-V semiconductor processing and quantum information science. As organizations pursue fault-tolerant Spin-Optical Quantum Computing (SPOQC) architectures, the ecosystem requires specialized engineers who can navigate the complex interdependencies between nanophotonic microcavities and quantum dot emitters. Current sector dynamics, influenced by public-private funding cycles and the European Chips Act, place a premium on roles that can drive the standardization of photonic integrated circuits. This structural layer of expertise is the primary mechanism for maintaining the momentum of technology roadmaps as they move toward modularity.
Infrastructure dependencies, specifically access to advanced nanofabrication facilities and the maturity of thin-film deposition techniques, remain high-risk variables for the sector. The evolution of the value chain depends on the ability to translate scientific breakthroughs in cavity-based sources into repeatable industrial processes without compromising quantum coherence. Consequently, the availability of research engineers capable of orchestrating these complex fabrication workflows is a primary determinant of whether a hardware organization can successfully transition from exploration to the deployment of large-scale, energy-efficient quantum processors.
The capability architecture for this role type centers on the synchronization of nano-lithography, etching, and thin-film deposition with advanced optical and electrical characterization protocols. Mastery of the interface between quantum emitters and photonic microcavities is essential for ensuring that single-photon sources are optimized for the specific constraints of cluster-state generation and measurement-based quantum computing. This requires a deep understanding of the integration points between physical device parameters and the high-level architectural requirements of quantum error-correcting codes.
These capabilities are fundamental to the throughput of technology organizations, as they enable the parallelization of iterative design cycles alongside the development of scalable characterization platforms. By establishing rigorous documentation and verification frameworks, this function provides the leverage needed to assess the statistical validity of device performance before full-scale capital allocation. Furthermore, the ability to collaborate across multidisciplinary teams ensures that fabrication outputs are reconciled with the practical constraints of system-level integration and packaging. Such expertise reduces the iteration friction between abstract photonics research and hardware delivery, which is critical for long-term interoperability within the global quantum hardware market. - Accelerates the deterministic transition from laboratory-scale photonic research to industrial-grade quantum hardware components
- Mitigates systemic fabrication risks by synchronizing long-term research cycles with near-term device production roadmaps
- Facilitates the integration of high-fidelity single-photon sources into standardized photonic integrated circuit architectures
- Strengthens the reliability of organizational technology strategies through the implementation of rigorous device benchmarking
- Reduces iteration friction between fundamental semiconductor breakthroughs and the deployment of scalable quantum emitters
- Optimizes the allocation of specialized technical talent across nanofabrication, characterization, and system-level integration portfolios
- Enhances the stability of the photonic hardware value chain by providing predictable performance frameworks for external partners
- Supports the scaling of quantum processing units by managing the complex dependencies of light-matter interface fabrication
- Improves the transparency of technology readiness level progression for stakeholders in the investment and sovereign technology sectors
- Enables the structural reproducibility of quantum experiments through the standardization of device implementation protocols
- Protects high-capital research and development investments by ensuring alignment between scientific discovery and commercial scalability
- Orchestrates the convergence of academic research pathways with the practical demands of global quantum computing servicesIndustry Tags: Quantum Photonics, Nanofabrication, Single-Photon Sources, Quantum Dot Technology, Semiconductor Engineering, Fault-Tolerant Quantum Computing, SPOQC Architectures, III-V Semiconductors, TRL Progression
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