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Seeking a postdoctoral researcher (W23269)


Mathematical Quantum Information RIKEN Hakubi Research Team
RIKEN Center for Quantum Computing
(Laboratory head: Bartosz Regula)

Research Field

RIKEN Center for Quantum Computing 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 will promote the progress of quantum information science and contribute to society through the application of quantum technologies.

Our group studies the mathematical underpinnings of quantum information theory, with a particular focus on the investigation of the mathematical structure of quantum resources — physical phenomena that underlie practical advantages of quantum technologies in areas such as communication and computation.

We aim to develop technical frameworks that help address the fundamental questions of how to quantify, manipulate, and take advantage of physical resources in quantum information and communication tasks. Our approach is to establish a solid and rigorous mathematical foundation which can be directly used to study a variety of physical settings, allowing for broad applications and generalisations. In addition to advancing the frontiers of knowledge on the fundamental laws governing quantum systems, we hope to provide insight into the physically achievable limits of the advantages of quantum resources, which can then find use in benchmarking practical quantum technologies.

Topics of particular interest include: quantum resource theories, theory of entanglement, classical and quantum Shannon theory, convex optimisation problems in quantum information, quantum foundations. Candidates from more mathematically-oriented backgrounds (e.g. functional analysis, matrix analysis) are also encouraged to apply.

Job title and Job description

Job title, available positions

Postdoctoral researcher (1 position)

Job description

The successful candidate will work on theoritical research in “Development of a broadly applicable mathematical framework for the quantification and manipulation of quantum resources” of the project “Foundations of quantum resources: mathematical theory for the structure and applications of quantum phenomena”. The project is a broad and open-ended investigation of the mathematical foundations of quantum information, and will offer a large degree of flexibility.

The Mathematical Quantum Information team is part of the rapidly growing RIKEN Center for Quantum Computing (RQC) which will allow for collaboration with other leading researchers.

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


The candidate should have a doctoral degree in a related field and a strong track record of research in quantum information or closely related areas.
The candidate should possess excellent technical and analytical skills, independence, and self-motivation.
Excellent verbal and written communication skills in English are required. (Japanese is not necessary.)

Work location

Branch and address

RIKEN Main Campus in Wako near Tokyo (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.
RIKEN may order the employee to change work locations, if necessary.

Salary and benefits

  • 1.A fixed-term employee with a single-year contract, renewable from the date of hire up to March 31, 2026, depending on evaluation.
  • 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 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 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 monthly salary at the time of employment:

The monthly salary including discretionary work allowance at the time of employment will be 550,000 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. (lunch break 12:00 to 12:50). Supervisors may instruct employees to work outside of these hours.
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.

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.Complete CV including full education and work history (Example formats: CV, CV.)
  • 2.List of research achievement and publications (if not already included in the CV).
  • 3.Brief description of previous research and future research plans (at most 3 pages in total).
  • 4.At least 1 letter of recommendation.
    • *Please specify the referee’s contact information (Name, affiliation, job title, and email address)
  • 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 should be combined into a single file (ZIP or PDF) and uploaded to the following link:

Mathematical Quantum Information postdoctoral researcher application [file upload]

The file name of the combined file should contain your full name.
After you upload the file, please let us (bartosz.regula [at] riken.jp) know the file name of the uploaded file.

Recommendation letters must be directly submitted from the referees to the following link with the file name "Recommendation letter for [applicant’s name]". Please specify the applicant's name, referee's name and contact information in the recommendation letter.

Mathematical Quantum Information postdoctoral researcher application [file upload]

Note: All the submitted documents will not be returned.


Open until the positions are 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

1 February 2024 or as early as possible thereafter (negotiable).

Contact Information

Bartosz Regula
Mathematical Quantum Information RIKEN Hakubi Research Team
RIKEN Center for Quantum Computing (RQC)
Email: bartosz.regula [at] riken.jp