Quantum Scientist, Experimental (Architecture Unit)

Background of the recruitment and description of the project
We are expanding our team to further accelerate the R&D of optical quantum computers toward practical application.

Work content and job description
The R&D (Research & 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.
More specifically, you will lead research on photonic quantum computing architectures. Your responsibilities will include:

• Developing system configurations encompassing quantum circuits, optical systems, and control systems, and conducting experiments to implement and validate them.
• Investigating, developing, and evaluating novel architecture concepts, and conducting experiments to implement and validate them.
• Working with theoritical teams to define system requirements and specifications.
• Providing technical analysis and design support for R&D projects.
• Evaluating the performance of quantum computing systems and identifying system bottlenecks.
• Participating in design reviews and technical discussions, and preparing technical documentation within the team.

Common to all Job Types
Annual Salary :

10 million yen
~
20 million yen

Work experience
[Required Qualifications]

• Language Skills: English proficiency sufficient for smooth communication with other researchers and quantum computing experts.
• Experience: 2+ years of experience in R&D for continuous-variable (CV) optical quantum computing (including research during Master’s/Ph.D. programs, either experimental or theoretical).
• Knowledge & Expertise:
• 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).
• Experience with experiments involving continuous-variable cluster states (regardless of the definition of quantum modes, such as spatial, temporal, or frequency domains).
• Ability to autonomously conduct quantum optics experiments, including the construction, design, and planning of experimental setups.
• Foundational knowledge of laser experiments (CW or pulsed).
• Foundational knowledge of nonlinear optics (e.g., wave mixing, sum-frequency generation, difference-frequency generation, harmonic generation, parametric down-conversion).
• Foundational skills in quantum optics experiments (interferometers, phase locking, lens system design, homodyne measurement, and operating measurement equipment such as oscilloscopes and spectrum analyzers).

[Preferred Qualifications]

• Experience writing papers as a first author.
• Experience writing academic papers as the corresponding author.
• Experience in both experimental and theoretical research.
• Conversational proficiency in Japanese.
• Experience working at a quantum computing-related company.

Common to all Job Types
Tenured

-

Non-tenure track

Various systems
Transportation expenses :
available (Up to JPY 100,000 per month)

Measures for preventing passive smoking at the workplace
No smoking indoors (Designated smoking room available in the building's common area).

Considerations for conducting interviews (e.g., those who live far away, such as overseas)

• Interviews are generally conducted online; however, candidates will be required to visit our office at least once.
• Please consult with us if this is difficult for you.
• Transportation expenses will be reimbursed for candidates traveling from distant locations (subject to company regulations).
• Reference checks may be requested during the selection process.
• The selection process and the number of interview rounds are subject to change.

Selection
Document Screening → 1st Interview → 2nd Interview → Final Interview → Offer Meeting (Note: The number of interviews may vary.)

Notification of result
We will contact you via email within 14 days of your interview.