Dipole blockade and quantum information processing in mesoscopic atomic ensembles
Dipole blockade and quantum information processing in mesoscopic atomic ensembles
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DOI：
10.1103/physrevlett.87.037901
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发表时间：
2001-07-16
影响因子：
8.6
通讯作者：
Zoller, P
中科院分区：
文献类型：
--
作者：
Lukin, MD;Fleischhauer, M;Zoller, P
我们描述了一种处理存储在介观系综集体态中的量子信息的技术。量子处理是通过光激发进入具有强烈偶极-偶极相互作用的状态来完成的。由此产生的“偶极封锁”可以用来抑制向除了单个激发态以外的所有集体态的跃迁。这可以用于集体原子自旋态的受控生成，以及非经典光子态和可伸缩的量子逻辑门。分析了一个涉及冷里德堡气体的例子。
We describe a technique for manipulating quantum information stored in collective states of mesoscopic ensembles. Quantum processing is accomplished by optical excitation into states with strong dipole-dipole interactions. The resulting "dipole blockade" can be used to inhibit transitions into all but singly excited collective states. This can be employed for a controlled generation of collective atomic spin states as well as nonclassical photonic states and for scalable quantum logic gates. An example involving a cold Rydberg gas is analyzed.