Fig. 1. (a) Under the control of a classical field , a quantum probe field propagates in a one-dimensional cold atomic ensemble of non-interacting superatoms. (b) Left, level structure of the three-level interacting cold atoms described by a vdW potential; right, an equivalent energy level structure of a non-interacting superatom. (a)量子探测场 在控制场 相干作用下的一维冷原子系综中传播, 原子系综可以看作是由独立的超级原子构成的; (b)左侧为具有vdW 相互作用的三能级原子结构图; 右侧为等价的无相互作用超级原子能级结构图

Fig. 2. (a) The transmitted probe intensity , (b) the second-order correlation function , (c) probe phase as a function of the probe detuning . The black solid, blue dashed and red dotted curves are corresponding to incident probe Rabi frequencies , and , respectively. The single-photon detuning and the Rabi frequency of control field . Other parameters are described in the text. (a)探测场透射率 , (b)二阶关联函数 , (c)探测场相位 作为探测失谐 的函数. 黑色实线, 蓝色折线以及红色点线分别对应入射探测场拉比频率 , 0.3 MHz和0.6 MHz的情况. 单光子失谐 , 控制场拉比频率 , 其他参数见正文描述

Fig. 3. (a) The transmitted probe intensity , (b) the second-order correlation function , (c) the probe phase as a function of the probe detuning and theRabi frequency of the incident probe field . Other parameters are the same as in Fig. 2. (a)探测场透射率 , (b)二阶关联函数 , (c)探测场相位 作为探测失谐 和入射探测场拉比频率 的函数. 其他参数同图2

Fig. 4. (a) The transmitted probe intensity , (b) the second-order correlation function , (c) probe phase as a function of the probe detuning and the initial second-order correlation function . The Rabi frequency of the incident probe field and other parameters are the same as in Fig. 2. (a)探测场透射率 , (b)二阶关联函数 , (c)探测场相位 作为探测失谐 和初始二阶关联函数 的函数. 入射探测场拉比频率 , 其他参数同图2

Fig. 5. Probe phase as a function of the Rabi frequency of the incident probe field and initial second-order correlation function : (a) Probe detuning ; (b) probe detuning . Other parameters are the same as in Fig. 2. 探测场相位 作为入射探测场拉比频率 和初始二阶关联函数 的函数　(a)探测失谐 ; (b)探测失谐 . 其他参数同图2

Fig. 6. Probe phase as a function of (a)the principal quantum number and (b) the atomic density . The incident probe intensity and the initial second-order correlation function . Other parameters are the same as in Fig. 2. 探测场相位 作为(a)主量子数 和(b)原子密度 的函数. 入射探测场拉比频率 , 初始二阶关联函数 . 其他参数同图2