Phase Matching in Lower Dimensions
Phase Matching in Lower Dimensions
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低维相位匹配
DOI：
10.1103/physrevlett.125.163601
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发表时间：
2020
影响因子：
8.6
通讯作者：
Kuzmich, A.
中科院分区：
文献类型：
--
作者：
Tamura, H.;Nguyen, H.;Berman, P. R.;Kuzmich, A.
相位匹配是指原子-场相互作用导致产生通过相互作用体积相干传播的输出场的过程。通过研究冷原子阵列的光散射，我们发现相位匹配的条件随着系统维数的减小而改变。特别地，对于单个原子链，在围绕阵列的对称轴的圆锥中存在相位匹配的反射散射，其比例为链中原子数的平方。对于两个原子链，布拉格散射可以增强或减弱相位匹配的反射散射。这种散射可以用于将中性原子阵列内的集体状态映射到传播光场上，并用于在分离的阵列之间建立量子链接。
Phase matching refers to a process in which atom-field interactions lead to the creation of an output field that propagates coherently through the interaction volume. By studying light scattering from arrays of cold atoms, we show that conditions for phase matching change as the dimensionality of the system decreases. In particular, for a single atomic chain, there is phase-matched reflective scattering in a cone about the symmetry axis of the array that scales as the square of the number of atoms in the chain. For two chains of atoms, the phase-matched reflective scattering can be enhanced or diminished as a result of Bragg scattering. Such scattering can be used for mapping collective states within an array of neutral atoms onto propagating light fields and for establishing quantum links between separated arrays.