Quantum Optics Scientist - Spin-Based Quantum Systems

Quandela SA; Palaiseau; Sur place; EUR 45 000 - 65 000; Plein temps

Avantages offerts par ce poste

Profit-sharing and a company savings plan

Public transport subscription covered at 50%

Annual sustainable mobility bonus

Fully covered health insurance

Referral program for new hires

Access to nursery contributions

Subsidy for gym membership

Meal subsidies

Résumé du poste

Quandela SA, based in Palaiseau, is looking for a Quantum Optics Scientist to advance their quantum computing technologies. You will integrate spin-photon quantum technologies, working within a multidisciplinary team to tackle scientific challenges and contribute to demonstrators for future quantum systems.

The ideal candidate holds a PhD in Spin Physics or Quantum Optics and has hands-on experience in experimental research. We offer a dynamic work environment in the Paris-Saclay research ecosystem with numerous employee benefits.

Qualifications

• PhD in a relevant field such as Spin Physics or Quantum Optics.
• Hands-on experimental research experience in relevant areas.
• Experience developing and troubleshooting experimental quantum systems.

Responsabilités

• Design and improve optical experiments involving spin-photon sources.
• Develop optical control schemes for spin initialization and readout.
• Collaborate with teams to enhance device performance.

Connaissances

Experimental research experience in spin physics

Hands-on quantum optics experience

Familiarity with spin control techniques

Collaboration within multidisciplinary teams

Formation

PhD in Spin Physics or Quantum Optics

Outils

Experimental setups for spin-photon sources

Advanced optical control techniques

Description du poste

- About Quandela:

QuandelaisaEuropeandeeptechscale-up buildingmodular, scalable andenergy-efficientphotonicand spin-opticalquantum computers.

Our quantumcomputingplatformisaccessibleboththroughthe cloud and on-premises.

With ateamof morethan140 people,wedevelopourownhardware and software stack,fromsemiconductorquantumemittersandphotonicprocessors to quantum controlsystemsand quantumalgorithms.

Our ambitionistobuildlarge-scalefault-tolerantquantum computers capable ofsolvingproblemsbeyondthereachofclassicalcomputationusingQuandela'scutting-edgequantum dottechnology.

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.

- About this position:

You will joinQuandela'sSemiconductor OpticsTeam, a multidisciplinary group combiningexpertisein quantum optics, spin physics, semiconductor technologies,electronicsand quantum information.

The team develops the building blocks required for future hybrid spin-photon quantum computing architectures, bridging quantum science, technology development and product-oriented demonstrators.

Inthisrole,youwillcontributetothedevelopmentand validation of photon-mediatedspin–spinentanglementprotocolswhileimprovingthe performance of spin-basedquantumsystems.

Current challenges include enhancing spin coherenceagainst decoherence,validatinghigh-fidelityspinqubit operations, developing advanced optical controltechniquesand strengthening theory-to-experiment feedback loops for future multi-spin architectures.

Beyond the scientific challenges, you will contribute tobuildingdemonstratorsthatwill directly becomepart of future quantum computing platforms. Success in this role relies on combining scientific rigor, collaborationacrossQuandelasproduction and researchdepartments.

- What you'll do:

As a Quantum Optics Scientist, you will contribute to the development of spin-based quantum technologies supporting Quandela's longterm quantum computing roadmap.

Yourworkwillinclude:

• Design,developandimproveopticalexperimentsinvolvingspin-photon sources
• Develop and implement optical control schemes for spininitialization,readoutand characterization
• Characterize keyspinproperties including coherence,operationfidelityandentanglementquality.
• Collaboratewiththeory,electronicsandsemiconductortechnologyteamstoimprovedeviceperformance andaccelerateexperimentalprogress.
• Contributingto thedevelopmentand validation of photon-mediatedspin–spinentanglementprotocolsand future multi-spin architectures.
• Validateand translatescientific advances intorobusttechnological building blocks for futurehybridquantum computing systems.

- How You Will Grow:

During your first 3 months

YouwillbecomefamiliarwithQuandela'sexperimentalplatforms, spin-control techniques andongoingdemonstratorprogramswhilecontributingtoexistingprojects.

Within6 months

Youwilltakeownershipofspecificscientificandexperimentalactivities,contributetoprotocoldevelopmentandactivelyparticipateintheory-to-experimentfeedbackloops.

Within1year

Youwillplayakeyroleinadvancingdistributedentanglementdemonstrations,contributeoriginalideasandhelpshapefuturedevelopmentswithintheteam.

- Ideal Profile:

• PhD inSpinPhysics, Quantum Optics, Spin-Photon interfaces in the solid stateorrelated fields.
• Hands-on experimental research experience in spin physics, quantum optics, semiconductor quantum systems, quantumemitters,or closely related areas.
• Experience developing,optimizing, and troubleshooting experimental quantum systems in a laboratory environment.
• Familiaritywithtechniquessuchas spincontrol,opticalmanipulation,coherencemeasurements, single-photoncharacterizationorrelatedexperimentalmethods.
• Comfortableworkingalongsidephysicists,engineersandtheoristsin amultidisciplinaryenvironment.
• Curious, collaborative andmotivatedbychallengingscientificandtechnologicalproblems.

Bonus Points

Experiencein one or more of thefollowingareasishighlyappreciated:

• Spin-photon interfaces
• Semiconductorquantumemittersand quantum dots
• Ultrafastopticsandadvancedopticalcontrol
• Fast control electronics, cryogenic experimental platforms, and advanced laboratory instrumentation.

If relevant,weencourageyouto highlightyourlevelofexperiencewiththesetopics inyourCV, publications or applicationmaterials.

- CareerStage & Team Contribution:

We welcome applications from candidates with a PHD in a relevant field, including recent PhD graduates and researchers with up to approximately three years of postodctoral or equivalent R&D experience.

Expereience candidates will take a leading role in shaping technical directions, accelerating key developments, and mentoring younger team members. Strong early-carrer candidates will be suported in developing technical independant though pressive ownership of experimental activities.

Beyond technicalexpertise, we value curiosity, rigor, collaboration, and a willingness to share knowledge within a multidisciplinary team.

• Profit-sharinganda companysavings plan.
• Public transport subscription covered at 50%.
• Annual sustainable mobility bonus for eco-friendly transport (e-bike, electric car).
• Fully covered health insurance (Alan).
• Referral program (€1,000 for a junior and €2,000 for an experienced candidate).
• Access to a nursery viachoisir-ma-creche or contribution to childcare expenses.
• Subsidy for gym membership and sports activities (Gymlib).
• Meal subsidies (Swile).

Localisationof theposition :Based at the IPVF campus inPalaiseau, within the Paris-Saclay research ecosystem.