{"id":3266474,"url":"https://alion.io/job/qubitcore-researcher-theoreticalqec","title":"Researcher (Theoretical/QEC)","company":{"id":3716,"name":"Qubitcore","domain":"qubitcore.jp","url":"https://alion.io/company/qubitcore","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Career site","truth_index":null},"role":"AI/ML","role_family":"AI/ML","seniority":null,"employment_type":null,"work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Okinawa, Japan"],"countries":["JP"],"hiring_countries":["JP"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Error Budget","optional":false},{"name":"Julia","optional":false},{"name":"Python","optional":false},{"name":"SLI/SLO/SLA","optional":false},{"name":"Qiskit","optional":true},{"name":"Stim","optional":true}],"status":"live","first_seen_at":"2026-10-26T09:30:52Z","employer_posted_date":"2026-10-26","last_verified_at":"2026-10-29T15:04:57Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"Home\n\n Careers\n\nResearcher (Theoretical/QEC)\n\nResearcher (Theoretical/QEC)\nJob Title: Quantum Researcher\nJob Summary:\nOwn the full error-correction stack - from building system-level error budgets to designing QEC codes and fault-tolerant protocols that run on real ion-trap processors. Work at the interface between quantum information theory and experimental physics, translating abstract QEC results into concrete, hardware-executable demonstrations on our QCCD platform.\nFull Time\nOkinawa\nAreas of expertise: Quantum Error Correction, Fault-Tolerant Quantum Computing, Quantum Information Theory\nJob Description (Responsibilities)\nBuild and maintain a comprehensive error budget quantifying noise across all system components - gates, measurement, and ion transport\n\nIdentify dominant error mechanisms from experimental data and translate findings into actionable targets for hardware improvement and QEC design\n\nDesign, analyze, and benchmark QEC codes adapted to realistic noise models of ion-trap hardware\n\nDevelop fault-tolerant logical gate sets and universal computation schemes including magic state preparation approaches\n\nModel and optimize ion-transport operations intrinsic to the QCCD architecture and quantify their contribution to the error budget\n\nExplore error mitigation and entanglement management strategies for the distributed, multi-module architecture\n\nCollaborate closely with experimental teams to design QEC proof-of-concept experiments and iterate on protocols\n\nContribute to publications, conference presentations, and IP development\n\nRequired Qualifications\nPhD in Physics, Quantum Information, Computer Science, or closely related field (Master's with strong QEC research track record also considered)\n\nProven experience in theoretical research\n\nRequired Skills\nDeep expertise in quantum error correction - stabilizer codes, topological codes, or concatenated architectures - including threshold analysis\n\nExperience building realistic noise models and error budgets for physical quantum systems\n\nStrong numerical simulation skills (Python, MATLAB, Julia, or equivalent)\n\nWorking proficiency in English - daily collaboration is conducted in English\n\nPreferred Skills\nFamiliarity with QCCD architecture or the operational characteristics of trapped-ion platforms\n\nExperience with QEC circuit simulation tools (Stim, Qiskit, or equivalent)\n\nKnowledge of decoding algorithms and their computational trade-offs\n\nBackground in distributed quantum computing or multi-node entanglement schemes\n\nTrack record of peer-reviewed publications in QEC or related topics\n\nEducation\nPhD (completed or expected) in a relevant field (Master's degree also acceptable)\nJob Information\nJob Type\nFull Time\nLocation\nOkinawa\nResearch Areas\nQuantum Error Correction, Fault-Tolerant Quantum Computing, Quantum Information Theory\nLocation\nOnna, Okinawa, Japan\nWork Style\nRemote work is negotiable depending on responsibilities. Domestic and international travel may be required.\nBenefits\nFull social insurance coverage (health, pension, employment, and workers' compensation)\n\nAnnual health checkups\n\nReady to Apply?\nJoin our team and help shape the future of quantum computing\n ApplyAbout Qubitcore\nFounded in 2024, Qubitcore Inc. is a deep tech startup originating from the Okinawa Institute of Science and Technology (OIST). We are developing and delivering next-generation quantum computers designed to tackle problems that are computationally intensive for classical systems-such as drug discovery, climate modeling, financial simulations, and generative AI. Our mission is to bring quantum computing into real-world applications with greater speed and precision.\nOur headquarters is located in Yokohama, while our R&D center operates within the OIST campus in Okinawa. Currently, our team consists of 3-5 members (including part-time collaborators), working closely with OIST to realize Japan's first distributed quantum computer.\nOur distributed architecture connects multiple quantum processing units (QPUs) via photonic links to form a high-performance, networked quantum system. This approach enables large-scale quantum computation that was previously impractical, opening new frontiers in quantum technology.","description_format":"text","description_chars":4226,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[{"language":"English","level":"Advanced (C1)","optional":false}]},"benefits":["Insurance coverage"],"hiring_locations":[{"name":"Japan","iso":"JP","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Quantum Science & Computing","Quantum Computing Hardware"],"lifecycle":[{"event":"open","at":"2026-10-26T09:30:52Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":2,"expected_fill_days":36,"reasons":["conf:3","velocity","win:early"],"computed_at":"2026-10-29T05:49:05Z"},"pay":null,"html_url":"https://alion.io/job/qubitcore-researcher-theoreticalqec","json_url":"https://alion.io/job/qubitcore-researcher-theoreticalqec.json","meta":{"generated_at":"2026-10-29T15:05:22Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":22752,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-30T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":3716},"rest":"https://alion.io/mcp/rest/get_company?id=3716"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fqubitcore-researcher-theoreticalqec"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fqubitcore-researcher-theoreticalqec"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fqubitcore-researcher-theoreticalqec"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/qubitcore-researcher-theoreticalqec\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fqubitcore-researcher-theoreticalqec"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3266474}},{"tool":"search_jobs","arguments":{"company":"qubitcore.jp","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3266474},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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