Past Research

As a postdoc, I was a William M. and Jane D. Fairbank Postdoctoral Fellow belonging to the W. W. Hansen Experimental Physics Laboratory and the Department of Physics at Stanford University. I worked on the test of the inverse-square-law of the Newtonian gravity with a microsphere trapped in an optical tweezer in Prof. Giorgio Gratta's group. The major result is published on Phys. Rev. D, and I also worked on the characterization of the system and theoretical proposals on using the system for particle physics applications[1,2].

I received Ph.D. degree at Department of Physics, Massachusetts Institute of Technology, where I worked on a spin squeezed ytterbium atomic clock at Prof. Vladan Vuletić's group in Center for Ultracold Atoms. I built the lab from an empty room and established a way to perform nearly-unitary spin squeeze the ground state slin 1/2 system in 171Yb, which are summarized in my thesis and a bunch of papers [3-6]. The first result on the spin squeezed optical lattice clock is published on Nature. 

During this period, I also worked on theoretical calculation of magic wavelength for the hydrogen 1S-2S transition[7,8], and I proposed an experiment on isotope shift measurements of Yb+ ions for the fifth force search [9,10].

[1] A. Kawasaki: Phys. Rev. D 99, 023005 (2019) 

[2] A. Kawasaki: Class. Quantum Grav. 37, 075002 (2020)

[3] A. Kawasaki, et al.: J. Phys. B: At. Mol. Opt. Phys. 48 155302 (2015) 

[4] A. Kawasaki*, B. Braverman*, et al.: Phys. Rev. A 99, 013437 (2019)

[5] B. Braverman*, A. Kawasaki*, E. Pedrozo-Peñafiel*, et al.: Phys. Rev. Lett. 122, 223203 (2019)

[6] A. Kawasaki*, B. Braverman*, et al.: Phys. Rev. A 102, 013114 (2020)

[7] A. Kawasaki: Phys. Rev. A 92, 042507 (2015)

[8] C.M. Adhikari, A. Kawasaki, U.D. Jentschura: Phys. Rev. A 94, 032510 (2016)

[9] Ian Counts*, Joonseok Hur*, ..., A. Kawasaki, ...: Phys. Rev. Lett. 125, 123002 (2020)

[10] Joonseok Hur*, Diana P. L. Aude Craik*, Ian Counts*, ..., A. Kawasaki, ...: Phys. Rev. Lett. 128, 163201 (2022)

*equal contribution

Last update: August 26, 2023