Properties of collective Rabi oscillations with two Rydberg atoms<xref rid="cpb_28_1_013202_fn1" ref-type="fn">*</xref><fn id="cpb_28_1_013202_fn1"><label>*</label><p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11474094, 11104076, and 11574086), the Science and Technology Commission of Shanghai Municipality, China (Grant Nos. 18ZR1412800 and 16QA1401600), and the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20110076120004).</p></fn>

Properties of collective Rabi oscillations with two Rydberg atoms**

Project supported by the National Natural Science Foundation of China (Grant Nos. 11474094, 11104076, and 11574086), the Science and Technology Commission of Shanghai Municipality, China (Grant Nos. 18ZR1412800 and 16QA1401600), and the Specialized Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20110076120004).

Ma Dan-Dan, Zhang Ke-Ye, Qian Jing^†

Proposal for the experimental implementation. Two isolated atoms are loaded in tightly focused dipole traps, i.e., optical tweezers separated by a distance of ∼ μm. The vdWs interaction U_dd causes an energy shift to one atomic state |r〉, obstructing the simultaneous Rydberg excitation of the two atoms. Our detection is mainly carried out on the time-dependent population dynamics of singly-excited and doubly-excited Rydberg states. Insets (i) and (ii) represent the atom–field interactions and the vdWs interactions in the single- and two-atom pictures. Relevant parameters are described in the main text.