1. Home
  2. Careers
  3. Job Openings

Seeking a Research Scientist or Postdoctoral Researcher (W21331)


Semiconductor Quantum Information Device Research Team,
RIKEN Center for Quantum Computing
(Laboratory head: Seigo Tarucha)

Research Field

Our research group has been studying quantum information processing, quantum state control, and the quantum physical properties (coherence, spin correlations, many-body effects, etc.) involved in these processes, based on the control and detection of electronic coherence in semiconductor quantum dots. In order to promote experimental research on the physics and fundamental technology of spin quantum computation using silicon quantum dots, we are now seeking a new postdoctoral researcher with experience in experimental research on low-dimensional electronic systems, especially electronic states and electrical conduction of quantum dots and quantum information.

Job title and Job description

Job title, available positions

Research Scientist or Postdoctoral Researcher
Postdoctoral Researcher is defined as those with a doctoral degree of 5 years or less.
Research Scientist is defined as those with a doctoral degree more than 5 years.

Job description

Research on characterization of silicon qubit devices, multi-qubit system, and high-fidelity quantum operations.


The candidate should possess a doctoral degree in experimental research fields of semiconductor physics, nano-science, electrical engineering, and quantum information.

Work location

Branch and address

RIKEN Wako (2-1 Hirosawa, Wako, Saitama 351-0198)

Salary and benefits

The following rules do not apply if the appointment is to begin on or after April 1, 2023, in accordance with the open recruitment procedure by RIKEN after October 17, 2022.

"The employee’s period of fixed-term employment cannot exceed 5/10 years from the initial date of hire (or 5/10 years from April 1, 2013 for fixed-term employees already at RIKEN prior to this date)."

  • 1.One-year fixed-term employment contract. Renewable upon evaluation, up to March 31, 2025.
  • 2.RIKEN may adjust the above maximum period of renewability based on a) the employee’s abilities, work load at the time of contract completion, performance and work attitude and b) the continuation of the employee’s center, laboratory or project and RIKEN’s management situation and budget at the time. In principle, employment contracts will not be renewed for individuals older than 65 years.
  • 3.The employee’s period of fixed-term employment cannot exceed 10 years from the initial date of hire (or 10 years from April 1, 2013, for fixed-term employees already at RIKEN prior to this date).
  • 4.In principle, the Center will be in place until March 31, 2025. This is until the end of the mid-term target period. If it is decided to continue into the next mid-term target period, the limit of the employment duration may be extended.
  • 5.For Research Scientist: employment may be terminated at 5 years from the date of hire, depending on the results of evaluation conducted during the fourth year of the employment.
  • 6.Postdoctoral Researcher have a system of promotion to Research Scientist (generally implemented in the fourth year).In the event of promotion, the Postdoctoral Researcher can be re-contracted for a maximum of 10 years in total from the Postdoctoral Researcher.

In principle, the first two months of employment is considered a trial period.
Salary will be commensurate with qualifications and experience. Discretionary work, commuting and housing allowances will be provided. Social insurance will be applied. Mandatory membership in the RIKEN Mutual Benefit Society (RIKEN Kyosaikai).
This position falls under the specialized duties discretionary work system; one working day will be calculated as 7 hours and 30 minutes. Days off include public holidays, New Year's holidays (Dec. 29 - Jan 3), and RIKEN Foundation Day.
Paid leave includes annual paid leave (up to 20 days depending on the month of employment), special paid leave (childcare, family nursing care, etc.), and work life balance holidays (up to 7 days depending on the month of employment).
There are also additional leave systems such as maternity leave, childcare leave, and family nursing care leave.
RIKEN has introduced telework as a temporary and special measure to prevent the spread of COVID-19. You may be asked to work from home according to the instructions of the institute. You can also choose to work from home with the permission of your supervisor.
No smoking on site (designated smoking areas available).
These and other provisions are in accordance with RIKEN regulations.

RIKEN is actively undertaking initiatives to promote gender equality and diversity, and moving forward with the establishment of a diverse and vibrant research environment. If multiple candidates are found to have the same aptitude following a fair assessment, active efforts will be made to recruit female candidates.

Also, eligible for an exemption from repayment for category 1 scholarship loans provided by the Japan Student Services Organization before fiscal year 2003, and eligible applying for the MEXT Grants-in-Aid for Scientific Research (Kakenhi).

Application and required documents

Required documents

  • 1.Complete CV or CV
  • 2.List of research achievement and publications
  • 3.A letter of recommendation from the current supervisor (If unavailable, a letter from a substitute reference will be acceptable.)
    • *Please specify the referee’s contact information (Name, affiliation, job title, phone number, and email address)
  • 4.Major papers (For Postdoctoral Researcher: up to 3 papers. For Research Scientist: up to 5 papers)
  • 5.Summary of past research and future research and work plans (For Postdoctoral Researcher : within 3 A4-size pages. For Research Scientist: within 5 A4-size pages)
  • 6.Consent form for handling personal information based on GDPR
    If you are a resident of the European Economic Area (EEA), you are required to submit the document, "Consent form for handling personal information based on GDPR" with your signature.

    *You will find detailed information about General Data Protection Regulation (GDPR) on the following website:
    Data protection | European Commission

How to apply

Please prepare your submission in PDF format and send it by e-mail to tarucha [at] riken.jp.
(Recommendation forms should be sent directly from the recommender by email.)
If a confirmation email is not received within 7 days after submission, please contact: tarucha [at] riken.jp.

Note: All the submitted documents will not be returned.


Open until the position is filled

Handling Personal Data

Submitted documents are strictly protected under the RIKEN Privacy Policy and will be used only for the purpose of applicant screening. Personal information will not be disclosed, transferred or loaned to a third party under any circumstances without just cause.

Selection process

Application screening and interview for selected applicants

Start of Employment

As early as possible

Contact Information

RIKEN Center for Quantum Computing
Semiconductor Quantum Information Device Research Team
Email: tarucha [at] riken.jp
For inquiries, please send an email.


Updated as of Nov. 4, 2022: "Salary and benefits"