Chinese Optics Letters, 2017, 15 (6): 060202, Published Online: Jul. 20, 2018
Spin dynamics of high-spin fermions in optical superlattices Download: 763次
Abstract
We investigate the spin dynamics, starting from the initial band-insulating state, of fermionic high-spin atoms in optical superlattices. Through numerical simulations and analytical calculations, we determine the time evolution behavior of the system. When the spin-changing strength and tunneling strength are comparable, the spin dynamics feature a spin-changing oscillation with the amplitude modulated by the superexchange interaction. When the double-well potential is very shallow, the spin dynamics feature a simple harmonic oscillation with the oscillation frequencies related only to the spin-changing strength, which can be properly explained with the perturbation model.
Shaobing Zhu, Jun Qian, Yuzhu Wang. Spin dynamics of high-spin fermions in optical superlattices[J]. Chinese Optics Letters, 2017, 15(6): 060202.