Polarization phase gate with a tripod atomic system -: art. no. 032317
Polarization phase gate with a tripod atomic system -: art. no. 032317
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DOI：
10.1103/physreva.70.032317
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发表时间：
2004-09-01
影响因子：
2.9
通讯作者：
Corbalán, R
中科院分区：
文献类型：
--
作者：
Rebic, S;Vitali, D;Corbalán, R
我们分析了一个四能级原子系统被驱动到三脚架位形时的非线性光学响应。在这样的系统中发生的大的交叉克尔非线性被示出为产生顺序π的非线性相移。这种实质性的转变可以在磁光阱中的冷原子气体中观察到，在磁光阱中，它可以被可行地利用来实现偏振量子相位门。这种门的实验可行性在这里详细检查。
We analyze the nonlinear optical response of a four-level atomic system driven into a tripod configuration. The large cross-Kerr nonlinearities that occur in such a system are shown to produce nonlinear phase shifts of order pi. Such a substantial shift may be observed in a cold atomic gas in a magneto-optical trap where it could be feasibly exploited towards the realization of a polarization quantum phase gate. The experimental feasibility of such a gate is here examined in detail.