Recently we have developed femtosecond laser frequency combs that allows us to measure the frequency of electromagnetic waves in the optical region with an unprecedented precision. Using the technology, we have stared experiments such as, determination of the electronic transition frequencies of laser-cooled atoms and molecules that are related to fundamental physics, precise control of relative delay between two femtosecond pulses electrically to the level of their electric fields, broadband dual-comb spectroscopy that is to apply to wide variety of matter systems including solid-state materials. Since our laboratory is 1.5-year old, the applicant will experience building his/her own optical setup as well as electric circuits to control lasers and to conduct experiments.

We also welcome the applicant to join our experiments on Bose-Einstein condensation of excitons in a semiconductor material, or experiments on laser cooling of positronium, which are in progress with collaborating laboratories.

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