{"id":4022573,"url":"https://alion.io/job/quandela-quantum-optics-scientist-spin-based-quantum-systems-3","title":"Quantum Optics Scientist - Spin-Based Quantum Systems","company":{"id":704,"name":"Quandela","domain":"quandela.com","url":"https://alion.io/company/quandela","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":100,"open_postings":7,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":49,"computed_at":"2026-11-12T10:38:37Z"}},"role":"Quantum","role_family":"Quantum","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Palaiseau, France"],"countries":["FR"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Photon Quantum","optional":false},{"name":"Python","optional":false}],"status":"live","first_seen_at":"2026-11-10T15:40:02Z","employer_posted_date":"2026-11-10","last_verified_at":"2026-11-13T04:59:14Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":2},"description":"- About Quandela:\nQuandela is a European deeptech scale-up developing modular, scalable and energy-efficient photonic and spin-optical quantum computers, accessible through the cloud and on-premises.\nWith over 140 employees, we develop our own hardware and software stack, from semiconductor quantum emitters and photonic processors to quantum control systems and algorithms.\nOur ambition is to build large-scale, fault-tolerant quantum computers, combining quantum dot technologies, scalable spin-photon interfaces and distributed entanglement within future Spin-Optical Quantum Computing (SPOQC) architectures.\n- About this position:\nYou will join Quandela's Semiconductor Optics Team, bringing together expertise in quantum optics, spin physics, semiconductor technologies and quantum information.\nYour focus will be to contribute to spin-based quantum experiments, develop optical control and characterization techniques, and support the demonstration of photon-mediated spin-spin entanglement for future quantum computing architectures.\nWe are looking for an experimental scientist with a strong foundation in quantum optics or spin physics, particularly through hands-on work with quantum emitters, optical spectroscopy or single-photon experiments.\nWith several experimental building blocks still under development, you'll have the opportunity to explore challenging scientific questions, develop your expertise alongside experienced scientists and engineers, and progressively take ownership of experimental activities contributing directly to our technology roadmap.\n- What you'll do:\nSpin-based quantum experiments:\nDevelop optical experiments on spin-photon quantum systems.\nOperate and improve setups for individual quantum emitters.\nExplore optical spin initialization, control and readout.\nMeasure spin coherence, operation fidelity and photon quality.\nPerform optical spectroscopy and single-photon measurements.\nExperimental development and scientific investigation:\nPlan experiments, acquire data and interpret results.\nTroubleshoot optical setups and improve measurement stability.\nGradually own experiments and propose scientific approaches.\nTechnology development and collaboration:\nStudy photon interference and spin-spin entanglement protocols.\nConnect experimental results with theory and device teams.\nImprove reproducibility, robustness and system performance.\nHelp turn experimental results into multi-spin demonstrators.\n- How You Will Grow:\nDuring your first 3 months:\nYou will become familiar with Quandela's experimental platforms, optical spectroscopy and spin-control techniques, contributing to ongoing measurements and experimental activities alongside the team.\nWithin 6 months:\nYou will take ownership of defined experimental tasks, contribute to setup optimization and protocol development, and actively participate in theory-to-experiment feedback loops.\nWithin 1 year:\nYou will independently drive specific experimental investigations, contribute to distributed entanglement demonstrations and help advance future spin-based architectures.\nRequirements\n- What we're looking for\nWe are looking for an early-career experimental researcher combining a strong scientific foundation, hands-on experience with quantum optical systems and the motivation to develop expertise in spin-based quantum technologies.\nMust-have\nPhD in Quantum Optics, Spin Physics or a related field.\nHands-on research in experimental quantum optics.\nExperience with quantum emitters, spins or single photons.\nOptical spectroscopy or quantum measurement experience.\nAbility to operate and troubleshoot complex optical setups.\nStrong data acquisition, analysis and interpretation skills.\nScientific rigor, problem-solving and team collaboration.\nImportant, but you can grow here\nOptical spin initialization, coherent control and readout.\nResonant spectroscopy on individual quantum emitters.\nSpin coherence and control in Voigt geometry.\nPhoton correlations (g²) and quantum interference.\nSingle-photon indistinguishability and HOM measurements.\nQuantum dots, spin-photon interfaces and entanglement.\nCryogenic experiments, advanced optics and fast electronics.\nExperimental automation and data analysis with Python.\nWe primarily target candidates completing their PhD or in the early stages of their postdoctoral or R&D career, with a strong experimental background and an interest in spin-based quantum systems.\nDirect experience with spin-spin entanglement or semiconductor spin qubits is not required. What matters is your experimental foundation, ideally involving individual quantum systems, optical spectroscopy or coherent control techniques, and your ability to progressively take ownership of scientific activities.\nPrevious industrial experience is not required.\nBenefits\nProfit-sharing and a company savings plan.\nPublic transport subscription covered at 50%.\nAnnual sustainable mobility bonus for eco-friendly transport (e-bike, electric car).\nFully covered health insurance (Alan).\nReferral program (€1,000 for a junior and €2,000 for an experienced candidate).\nAccess to a nursery via choisir-ma-creche or contribution to childcare expenses.\nSubsidy for gym membership and sports activities (Gymlib).\nLocation of the position : Based at the IPVF campus in Palaiseau, within the Paris-Saclay research ecosystem.\nProcess\nTalent Acquisition Interview (30-45 min)\nTechnical discussion and presentation of previous research work\nMeeting with the team and scientific discussion\nReference checks\nOffer\nBeyond That\nAt Quandela, you'll work on challenging scientific questions while helping turn experimental advances into technologies for future quantum computers.\nOur spin-based platforms are still evolving, offering opportunities to develop new skills, contribute original ideas and grow alongside experienced scientists working on ambitious quantum technologies.\nIf you're excited by the idea of combining experimental quantum research with tangible technological impact, we'd love to hear from you, even if your background doesn't match every requirement.","description_format":"text","description_chars":6074,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"phd","optional":false},"security_clearance":false,"languages":[]},"benefits":["Gym membership","Health insurance","Sports 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