Researcher (Theoretical/QEC)
Confirmed on the employer's own hiring board on Oct 26, 2026. First seen by Alion on Oct 26, 2026.
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Researcher (Theoretical/QEC)
Researcher (Theoretical/QEC)
Job Title: Quantum Researcher
Job Summary:
Own 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.
Full Time
Okinawa
Areas of expertise: Quantum Error Correction, Fault-Tolerant Quantum Computing, Quantum Information Theory
Job Description (Responsibilities)
Build and maintain a comprehensive error budget quantifying noise across all system components - gates, measurement, and ion transport
Identify dominant error mechanisms from experimental data and translate findings into actionable targets for hardware improvement and QEC design
Design, analyze, and benchmark QEC codes adapted to realistic noise models of ion-trap hardware
Develop fault-tolerant logical gate sets and universal computation schemes including magic state preparation approaches
Model and optimize ion-transport operations intrinsic to the QCCD architecture and quantify their contribution to the error budget
Explore error mitigation and entanglement management strategies for the distributed, multi-module architecture
Collaborate closely with experimental teams to design QEC proof-of-concept experiments and iterate on protocols
Contribute to publications, conference presentations, and IP development
Required Qualifications
PhD in Physics, Quantum Information, Computer Science, or closely related field (Master's with strong QEC research track record also considered)
Proven experience in theoretical research
Required Skills
Deep expertise in quantum error correction - stabilizer codes, topological codes, or concatenated architectures - including threshold analysis
Experience building realistic noise models and error budgets for physical quantum systems
Strong numerical simulation skills (Python, MATLAB, Julia, or equivalent)
Working proficiency in English - daily collaboration is conducted in English
Preferred Skills
Familiarity with QCCD architecture or the operational characteristics of trapped-ion platforms
Experience with QEC circuit simulation tools (Stim, Qiskit, or equivalent)
Knowledge of decoding algorithms and their computational trade-offs
Background in distributed quantum computing or multi-node entanglement schemes
Track record of peer-reviewed publications in QEC or related topics
Education
PhD (completed or expected) in a relevant field (Master's degree also acceptable)
Job Information
Job Type
Full Time
Location
Okinawa
Research Areas
Quantum Error Correction, Fault-Tolerant Quantum Computing, Quantum Information Theory
Location
Onna, Okinawa, Japan
Work Style
Remote work is negotiable depending on responsibilities. Domestic and international travel may be required.
Benefits
Full social insurance coverage (health, pension, employment, and workers' compensation)
Annual health checkups
Ready to Apply?
Join our team and help shape the future of quantum computing
ApplyAbout Qubitcore
Founded 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.
Our 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.
Our 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.