利用偶极封锁机制制备多粒子W态

The Preparation of Multiparticle W State Via the Dipole Blockade Mechanism

基于由具有2N+1个稳定基态和N个里德堡态原子组成的系综系统,采用对称集体态编码、偶极封锁效应并控制激光和系综相互作用时间,成功制备了多粒子W态.这种编码方法有效克服了以往由于偶极封锁效应仅在一定范围内有效从而导致难以拓展到多粒子情形的限制.最后讨论了该方案的实验可行性.

Based on collective encoding in an ensemble with 2N ＋ 1 stable ground sates and N Rydberg states, we realize successfully the preparation of multiparticle W state via adjusting suitable interaction time between laser and ensemble and making use of the dipole blockade effect. The encoding scheme effectively overcome the limit of qubit number caused by the dipole blockade effect being effective only within a certain range. Finally, we discuss the scheme＇s experimental feasibility.