We seek candidates interested in cosmic microwave background experiments with extensive experience in cryogenic instrumentation. The successful candidates will work with QUP Senior Scientist and project manager of QUP's LiteBIRD activity, Hiroki Akamatsu, whose research focuses on developing CMB instrumentation for JAXA's L-class mission LiteBIRD aiming for primordial gravitational-wave search. Our postdoctoral fellows are for three years, with the possibility of a 2-year renewal based upon satisfactory job performance, continuing availability of funds, and ongoing operational needs, and are provided with salaries comparable to those at other prestigious institutions. We may offer a higher position, at the rank of assistant professor, for five years with the possibility of a 2-year renewal to outstanding candidates.

 The primary research topic of the new position is the construction and accurate characterization of the LiteBIRD low-frequency telescope Focal Plane Unit (FPU). The focal plane subassembly will be based on Transition Edge Sensors bolometers and Digital Frequency Multiplexing technology. We expect to build and characterize the prototype (demonstration model) by 2026. We seek ambitious, highly motivated, and result-driven scientists. Applicants should have a Ph.D. in Physics/Engineering or a related field by the time the appointment begins. Excellent cryogenics instrumentation experiences are essential. A good command of the English language is necessary, and the fellow should be able to work independently and in a team.

 To this end, the fellow will also benefit from close interactions with the QUP director and PI of the LiteBIRD project, Prof. Masashi Hazumi, and other PIs of QUP for various topics.

 As a WPI research center, QUP is designed to establish an international environment where more than 30% of researchers are non-Japanese. English is the official language of QUP. QUP is an equal-opportunity employer that will build a diverse community of scientists. We welcome qualified applicants worldwide, including women, persons with disabilities, and underrepresented minorities, regardless of race, color, religion, gender identity, etc. About 40% of initial PIs at QUP are female. 

 The posting shall remain open until the positions are filled and submitted documents are assessed regularly until September 30, 2023. Applications will only be accepted via AcademicJobsOnline.org. Applicants should submit curriculum vitae (with an email address and citizenship), a statement of research interests, and a list of publications. Applicants should also ensure that at least three letters of reference be submitted on their behalf. They should be uploaded from this page. Email inquiries regarding the application process may be sent to qup_job_inquiry@ml.post.kek.jp .