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Seeking a few Postdoctoral Researchers (W22309)


Quantum Optoelectronics Research Team
RIKEN Center for Advanced Photonics
(Team Leader: Yuichiro Kato)

Research Field

The Quantum Optoelectronics Research Team aims to develop and engineer optoelectronic devices with novel functionalities that can only be achieved by utilizing the quantum nature of electrons and photons at the nanoscale.

For more information, please refer to the following websites:

Job title and Job description

Job title, available positions

Postdoctoral Researcher, a few positions

Postdoctoral Researcher is defined as those who have had a doctoral degree for less than 5 years.

Job description

Successful applicant is expected to conduct experimental research in the Quantum Optoelectronics Team under the guidance of Dr. Yuichiro Kato. Our current research efforts include, but are not limited to, photonics and optoelectronics utilizing atomically defined nanomaterials such as carbon nanotubes and two-dimensional materials, as well as photonic crystals, optical microcavities, and quantum defects. Projects will involve fabrication and engineering of nanoscale devices, microspectroscopy and imaging measurements, as well as development of automated data collection and analysis systems.


Applicants must have obtained a doctoral degree in physics, engineering, chemistry or a closely related field, and have held the degree for less than five years of the date of appointment. Written and verbal English proficiency is required. Applicants are expected to have a strong publication record that demonstrates their capability for cutting-edge scientific research. Extensive experience in nanoscale devices, optical spectroscopy and/or nanomaterials is highly preferred.

Work location

Branch and address

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

RIKEN has implemented a work-from-home system. Employees can work from home in accordance with the prescribed procedures.

Salary and benefits

  • 1. A one-year fixed-term employment contract, renewable based on evaluation, to a maximum of 5 years of employment.
  • 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.When the center to which the Employee is affiliated is scheduled for a final review in FY2024 and it is decided that the Employee's research will not be continued, the provision given above for projects of limited duration applies and the Employee's contract will not be renewed for the FY2025 year that would extend employment beyond the center's final fiscal year.

In principle, the first two months of employment is considered a trial period.
Salary will be an annual salary based on experience, ability, and performance, and will consist of a base salary and a variable salary. The variable salary will be determined each fiscal year based on experience, ability, and performance. The monthly base salary is 295,100 JPY as of April 1, 2023. The monthly base salary and variable salary are subject to change due to amendments to RIKEN regulations.

Discretionary work, commuting and housing allowances will be provided. Social insurance will be applied.

The approximate amount of annual salary at the time of employment:
The monthly salary including discretionary work allowance at the time of employment will be 330,000 JPY or more.

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.
Smoking is not permitted on site except in designated smoking areas. Smoking will be entirely prohibited on site from April 2024.
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).

The Wako Campus has an on-site daycare, RIKEN Kids Wako. For details, please send an email to the HR at kids [at] riken.jp.

Application and required documents

Required documents

  • 1.Cover Letter (Include a summary of research achievements and a detailed description of a research project that you would like to pursue in our group. The project proposal should bring together your personal expertise with our strengths, and have a clear scientific merit.)
  • 2.Complete CV or CV (include photo and email address)
    • *Write the open call ID “W22309”, indicated in the parentheses next to the job title, in the open call ID section in the upper right corner of your CV.
  • 3.List of research publications (Please include a link to Google Scholar and/or Web of Science Author Record.)
  • 4.Three letters of recommendation including one from the current supervisor (Please arrange the letters to be uploaded directly. Please include contact information (Name, affiliation, job title, phone number, and email address) of the references in the letter. If the current supervisor’s recommendation is not available, a recommendation letter from a third party will be accepted.)
  • 5.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

The above documents except the recommendation letters combined into a single pdf file should be uploaded to the following website:

For Postdoctoral Researcher position, Quantum Optoelectronics Research Team, Center for Advanced Photonics, RIKEN

  • The uploaded file name should contain your name.
  • When you upload the file, your contact email address is required.
  • After you uploaded the file, please notify the file name of the uploaded file to the e-mail address shown in the contact information below.

Recommendation letters must be directly submitted from the referees to the following website with the file name "Center for Advanced Photonics, position name [applicant’s name] (Recommendation letter)". Please specify the applicant's name, referee's name and contact information in the recommendation letter and include the applicant's name in file name.

For Postdoctoral Researcher position, Quantum Optoelectronics Research Team, Center for Advanced Photonics, RIKEN

When the referees upload the file, contact email address is required.
After the referees uploaded the file, please notify the file name of the uploaded file to the e-mail address at contact information below.

If a confirmation email is not received within 7 days after submission, please contact: the e-mail address at contact information below.

Note: Application 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, interview and oral presentation by selected applicants

Start of Employment

As early as reasonably possible after May 1, 2023 (Negotiable).

Contact Information

Quantum Optoelectronics Research Team, RIKEN Center for Advanced Photonics
Email: katogp-info [at] ml.riken.jp
For inquiries, please send an email.


Updated as of May. 31, 2023: "Work location", "Salary and benefits"