#251 [Quantum Computers] Junior Quantum Scientist: Fundamentals

Company Overview

The company aims to bring quantum computing into practical, real-world use.

By realizing quantum computing, they seek to balance energy efficiency with high computational power, overcome the limits of information processing facing humanity, and contribute to the creation of a sustainable society.

They are a pioneering leader in the global quantum computing market, driven by proprietary optical quantum technology that enables room-temperature operation and excellent scalability. A diverse team of highly skilled professionals from various backgrounds and fields collaborates daily, transcending borders and disciplinary boundaries.

They welcome ambitious individuals who want to create world-changing “next-generation technology” firsthand and make a genuine impact on the global market.

The company is also well-capitalized, having raised a total of 7 billion yen in funding.

Background

The Fundamental Unit is conducting core research activity on the generation and measurement of “squeezed light,” the fundamental resource for their optical quantum computers. As we move into the next phase of development, it is essential to strengthen their organizational structure to further accelerate the experimental cycle (construction, measurement, evaluation, and improvement). They are looking for a highly motivated junior researcher with great potential. Working on the front lines of experimentation alongside senior scientists, you will be responsible for daily optical alignment and precise data acquisition. Through this hands-on experience, you will absorb the latest quantum optics technologies and grow into an expert who will lead their core technology in the future.

Key Responsibilities

As a member of the Fundamental Unit, you will participate in a research project focused on achieving high-purity free-space squeezed light and high-precision measurements, utilizing a PPLN waveguide as the light source. Squeezed light is the fundamental resource and key to realizing the optical quantum computers they are developing. Under the guidance and review of senior researchers, you will take on practical experimental tasks—such as constructing optical systems and acquiring data—for the development of low-loss squeezed light generation and low-noise homodyne measurements.

Example of Specific Responsibilities:

• Construct experimental setups for quantum optical systems and adjust optical configurations in collaboration with senior scientists.
• Acquire experimental data using measurement instruments such as oscilloscopes and spectrum analyzers, and perform basic data analysis and reporting using Python (or similar tools).
• Assist in the selection and procurement of optical elements and components necessary for experiments, and ensure the proper maintenance and management of the experimental environment.
• Conduct reviews of prior research and propose experimental plans and improvement ideas through discussions within the team.

Requirements

• Degree: Master’s or Ph.D. in one of the following fields:
  • Optics: Lasers, nonlinear optics, squeezed light, gravitational-wave interferometers, etc.
  • Quantum: Quantum information physics, quantum optics, etc.
• Research Experience: 2+ years of experience in optical experiments and measurements (including research during a Master’s program).
• Foundational Skills:
  • Practical experience handling basic optical elements in free-space or fiber-optic systems.
  • Experience acquiring and evaluating data using basic measurement instruments (oscilloscopes, spectrum analyzers, etc.).
  • Basic data analysis skills using Python or similar tools.
• Language Skills: English proficiency sufficient for reading technical papers/documents and conducting basic technical communication.

Preferred Requirements

• Foundational knowledge or research experience in nonlinear optics (e.g., PPLN), squeezed light, or continuous-variable (CV) quantum computing.
• Experience with homodyne measurements or phase-locking techniques.
• Experience writing scientific papers as a first author or presenting at academic conferences.
• Conversational proficiency in Japanese.

Terms and Conditions

• Annual Salary: 10 million JPY or higher (determined based on experience and skills)

• Bonus: None

• Salary Increase: Once a year

• Probation Period: 3 months

• Location: Tokyo

• Social Insurance: Fully covered

• Working Hours: Flextime (Core time: 13:00–16:00)

• Holidays: Saturdays, Sundays, and National Holidays

• Average Overtime: Discretionary labor system

• Smoking Cessation Measures: Non-smoking indoors

Selection Process

• Selection Flow: 3 interviews (including one in-person presentation interview)

• Required Documents: Resume, CV (work history), and list of publications

• Interview Language: Japanese or English