KANAMOTO Rina    Department   Undergraduate School  , School of Science and Technology    Position   Professor
Research Period	2016/04～2019/03
Research Topic	Quantum control of many-body oscillators via cooperative effects
Research Type	KAKENHI Research
Consignor	Japan Society for the Promotion of Science
Research Program Type	Grant-in-Aid for Scientific Research (C)
KAKENHI Grant No.	16K05505
Responsibility	Representative Researcher
Representative Person	KANAMOTO Rina
Details	Control and measurement of mechanical oscillators are import issues toward quantum science and technology. This work was aimed at uncovering quantum collective effects in coupled mechanical oscillators of micro- or nano-scale for quantum control and quantum-limited sensing. The main results of this work are summarized into four categories: (i) we found that exciton-polariton condensates undergo a synchronization transition of rotational motions, (ii) we found a finite-size scaling in the collective quantum dynamics of nonlinear oscillators under quantum noise, (iii) we introduced a new perspective of nanosphere-atom dispersion force that modifies the center-of-mass motion of the nanosphere, (iv) we proposed a quasi-non-destructive measurement scheme of angular momentum of atomic Bose-Einstein condensate via optomechanical interactions.