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Seeking a few Postdoctoral Researchers (W23333)


Superconducting Quantum Computing System Research Unit,
RIKEN Center for Quantum Computing
(Laboratory head: Yutaka Tabuchi)

Research Field

RIKEN Center for Quantum Computing (RQC) aims to study quantum information theory, develop techniques for quantum control and measurement, build quantum computing hardware and software, and explore novel quantum technologies. We promote the progress of quantum information science and contribute to society through the application of quantum technologies. Our unit pursues the realization of scalable superconducting quantum computers and conducts research and development of three-dimensional integration of superconducting circuits, including quantum chips and peripheral circuits. We extend the design method of a quantum chip to that of the system level, ensuring the system having scalability and integrability.

Job title and Job description

Job title

Postdoctoral Researcher a few positions

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

Job description

The successful candidates will work on research and development of superconducting quantum computers, particularly on three-dimensional integration of superconducting quantum circuits using flip-chip bonding and through-silicon vias. They will establish a concrete design method of a quantum computing system through their integration of a multi-layered vertical accessible quantum circuit.
Research experience in related fields, such as quantum electronics, superconducting electronics, microwave engineering, and nanofabrication technology, is desirable.

The job description may be changed during the contract period or upon contract renewal to the extent described above.


The candidate should possess a doctoral degree in a related field and research experience using superconducting quantum circuits, superconducting electronics, microwave engineering and/or nanofabrication.

Work location

Superconducting Quantum Computing System Research Unit,RIKEN Center for Quantum Computing,RIKEN
2-1 Hirosawa, Wako, Saitama

RIKEN has implemented a work-from-home system. Employees can work from home in accordance with the prescribed procedures.
RIKEN may order the employee to change work locations, if necessary.

Salary and benefits

  • 1.A one-year fixed-term employment contract, renewable based on evaluation, to a maximum 5 years of employment.
  • 2.RIKEN may adjust the above maximum period of renewability based on a) the employee’s abilities, workload 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 70 years.

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 300,000 JPY for Postdoctoral Researcher, as of April 1st 2024. 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 for a candidate with 3 years of experience, ability, and achievement after completion of the doctoral course will be approximately 430,000 JPY for Postdoctoral Researcher.

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 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

How to apply

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

For Postdoctoral Researcher position, Superconducting Quantum Computing System Research Unit, RIKEN Center for Quantum Computing

The file name of the ZIP should contain your contact email address.
After you uploaded the ZIP file, please let us (yutaka.tabuchi [at] riken.jp) know the file name of the uploaded file.

Recommendation letters must be directly submitted from the referees to the following website with the file name "RQC research scientist (or postdoctoral researcher) [applicant’s name] (Recommendation letter)". Please specify the applicant's name, referee's name and contact information in the recommendation letter.

For Postdoctoral Researcher position, Superconducting Quantum Computing System Research Unit, RIKEN Center for Quantum Computing

After the referees uploaded the recommendation letter, please let us (yutaka.tabuchi [at] riken.jp) know the file name of the uploaded file.
If a confirmation email is not received within 7 days after submission, please contact: yutaka.tabuchi [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 at RIKEN. 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 possible

Contact Information

RIKEN Center for Quantum Computing
Superconducting Quantum Computing System Research Unit,
Email: yutaka.tabuchi [at] riken.jp
For inquiries, please send an email.