Monte Carlo simulations of electromagnetically induced transparency in a square lattice of Rydberg atoms  

作　　者：Shang-Yu Zhai Jin-Hui Wu 翟尚宇;吴金辉(Center for Quantum Sciences,Northeast Normal University,Changchun 130117,China;School of Physics,Northeast Normal University,Changchun 130024,China)

机构地区：[1]Center for Quantum Sciences,Northeast Normal University,Changchun 130117,China [2]School of Physics,Northeast Normal University,Changchun 130024,China

出　　处：《Chinese Physics B》2021年第7期283-288,共6页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.12074061)。

摘　　要：We study the steady optical response of a square lattice in which all trapped atoms are driven by a probe and a coupling fields into the ladder configuration of electromagnetically induced transparency(EIT).It turns out to be a manybody problem in the presence of van der Waals(vd W)interaction among atoms in the upmost Rydberg state,so Monte Carlo(MC)calculation based on density matrix equations have been done after introducing a sufficiently large cut-off radius.It is found that the absorption and dispersion of EIT spectra depends critically on a few key parameters like lattice dimension,unitary vd W shift,probe Rabi frequency,and coupling detuning.Through modulating these parameters,it is viable to change symmetries of the absorption and dispersion spectra and control on demand depth and position of the transparency window.Our MC calculation is expected to be instructive in understanding many-body quantum coherence effects and in manipulating non-equilibrium quantum phenomena by utilizing vd W interactions of Rydberg atoms.

关 键 词：electromagnetically induced transparency Rydberg atomic lattices Monte Carlo simulations 

分 类 号：O562[理学—原子与分子物理]