Quantum Scientist, Theoretical (Architecture Unit)

About the role

{"id":1096998,"type":"requisition_detail","name":"Job Description","value":"## About OptQC\nOptQC is a deep-tech startup spun out of the University of Tokyo, founded with the mission of achieving the social implementation and commercialization of \"optical quantum computers.\"\nWhile multiple modalities exist in the quantum computing landscape, we focus on the optical quantum approach. We are confident that this method is the most suitable for practical application and widespread adoption due to its inherent scalability and seamless integration with optical communications. Through continuous research and development, we aim to balance energy efficiency with high computing power, overcome the limits of human information processing, and contribute to a sustainable society.\n\n## Background\nThe Architecture Unit plays a broad role in the design of optical quantum computers—ranging from conceptual design and evaluation of future systems to detailed design based on existing technologies. To accelerate our R\u0026D toward realizing optical quantum computing, we are currently strengthening our team.\nIn this role, we are seeking high-potential, growth-oriented individuals who have a strong interest in optical quantum information and the ambition to eventually lead world-class, cutting-edge technology from the high-level architecture layer.\n\n## Key Responsibilities\nThe R\u0026D (Research \u0026 Development) department is the core of our business growth and the source of our competitive advantage. In this position, you will conduct foundational research (both experimental and theoretical) aimed at realizing a fault-tolerant universal optical quantum computer. Your primary responsibility will be the design and demonstration experiments related to the overall architecture of optical quantum computers.\n\nMore specifically, you will lead research on photonic quantum computing architectures. Your responsibilities will include:\n\n- Developing system configurations encompassing quantum circuits, optical systems, and control systems, and validating their feasibility.\n- Proposing and validating novel photonic quantum computing architectures.\n- Developing and validating novel quantum error-correcting codes.\n- Working with experimental teams to define system requirements and specifications.\n- Providing technical analysis and design support for R\u0026D projects.\n- Evaluating the performance of quantum computing systems and identifying system bottlenecks.\n- Participating in design reviews and technical discussions, and preparing technical documentation within the team.\n\n## The Role \u0026 Impact\nIn this role, you will directly contribute to the realization of practical optical quantum computers—a breakthrough attracting global attention—from the high-level perspective of system architecture design.\nFurthermore, because you will be responsible for overall system design, you can engage with various internal R\u0026D processes, allowing you to gain deep expertise in state-of-the-art knowledge and technologies.","selected":true},{"id":1096999,"type":"requisition_detail","name":"Required Qualifications","value":"- Degree: Master’s or Ph.D. in one of the following fields:\n - Optics (e.g., lasers, optical frequency combs, integrated optical circuits, nonlinear optics, optical communications)\n - Quantum (e.g., quantum information theory, quantum information physics, quantum optics)\n- Language Skills: English proficiency sufficient for smooth communication with other researchers and quantum computing experts.\n- Experience: 2+ years of experience in R\u0026D for continuous-variable (CV) optical quantum computing (including research during Master’s/Ph.D. programs, either experimental or theoretical).\n- Knowledge \u0026 Expertise:\n - Proficiency in handling bosonic systems, generation/verification/evaluation of CV quantum entanglement, foundational knowledge of non-Gaussian states (e.g., Schrödinger's cat states, Fock states, GKP states), and foundational knowledge of CV quantum computing (including universal quantum computing and quantum error correction).\n - Deep understanding of the theory behind continuous-variable quantum error correction (QEC).\n - Numerical computation skills required for QEC research, such as calculating fault-tolerance thresholds and error rates.\n - R\u0026D experience with bosonic codes, such as GKP codes and Cat codes.\n - R\u0026D experience with continuous-variable error correction architectures.\n - Foundational knowledge of experiments related to continuous-variable optical quantum computers.","selected":true},{"id":1097000,"type":"requisition_detail","name":"Preferred Qualifications","value":"- Experience writing papers as a first author.\n- Experience writing academic papers as the corresponding author.\n- Experience in both experimental and theoretical research.\n- Conversational proficiency in Japanese.\n- Experience working at a quantum computing-related company.","selected":true},{"id":1097001,"type":"requisition_detail","name":"Ideal Candidate Profile","value":"- Individuals who understand hardware from first principles and can navigate both technology and theory.\n- Individuals who possess deep expertise in their own field while maintaining a strong motivation to take on diverse challenges.\n- Individuals who are eager to co-create new value with a variety of internal and external stakeholders and organizations.\n- Individuals with a flexible mindset who are eager to put their ideas to meaningful use in society","selected":true},{"id":1097002,"type":"requisition_detail","name":"Salary","value":"13 million JPY or more (Determined based on experience and skills)","selected":true},{"id":1097003,"type":"requisition_detail","name":"Location","value":["15th Floor, IT tower TOKYO, 3-28-13 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-0021, Japan"],"selected":true},{"id":1097067,"type":"requisition_detail","name":"Employment Type","value":"Full-time","selected":true},{"id":1098009,"type":"requisition_detail","name":"Hiring Process","value":"- Document Screening *Please submit a publication list\n- Interview (2–3 rounds) *Includes a research / work presentation\n- Offer Meeting\n\n[Additional Information]\n- Interviews are generally conducted online; however, candidates will be required to visit our office at least once.\n - Please consult with us if this is difficult for you.\n - Transportation expenses will be reimbursed for candidates traveling from distant locations (subject to company regulations).\n- Reference checks may be requested during the selection process.\n- The selection process and the number of interview rounds are subject to change.","selected":true}

Source: OptQC's careers page via Html. Read by TQI on 1 Nov 2026.