Size-reduction of Rydberg collective excited states in cold atomic system

Dongsheng Ding ,Yichen Yu ,Zongkai Liu ,Baosen Shi ,and Guangcan Guo

1Key Laboratory of Quantum Information,University of Science and Technology of China,Hefei 230026,China;

2Synergetic Innovation Center of Quantum Information and Quantum Physics,University of Science and Technology of China,Hefei 230026,China

Graphical abstract

A size-reduction effect of the Rydberg collective state during Rabi oscillation.E-state:low-lying collective excited state.R-state:highlying Rydberg collective excited state.Ωcoll:the effective Rabi frequency.

Public summary

■ The Rydberg collective state is firstly created by Rydberg quantum memory,the authors demonstrate a decreased oscillation frequency effect via measuring time traces of the retrieved light field amplitude,exhibiting a chirped characteristic.

■ This many-body Rabi oscillation between a high-lying Rydberg collective excited state and low-lying collective excited state is accompanying with a radiated photon.

■ This experiment shows potential perspectives in manipulating single photon shape and controlling Rydberg superatoms.