Chen Hua Li, Wang Gang, Lee Ray Kuang
Opt Express. 2018 Dec 10;26(25):33205-33214. doi: 10.1364/OE.26.033205.
Bound states in the continuum (BICs) of periodic lattices have been the recent focus in a variety of photonic nanostructures. Motivated by the recent results about the photons evolving in BIC structures, we investigate the quantum decay of entangled biphotons through disordered photonic lattices. We report that the persistence of bound states in disordered photonic lattices leads to an interplay between the BIC and disorder-induced Anderson localized states. We reveal a novel effect resulting from such an interplay: a nearly complete quantum survival for the entangled biphoton respecting the antisymmetric exchange symmetry. This is in contrast to the complete vanishment in a periodic photonic lattice.
周期性晶格中的连续域束缚态（BICs）近来一直是各种光子纳米结构的研究焦点。受近期关于在BIC结构中演化的光子的研究结果启发，我们研究了纠缠双光子通过无序光子晶格的量子衰变。我们报告称，无序光子晶格中束缚态的持续存在导致了BIC与无序诱导的安德森局域态之间的相互作用。我们揭示了这种相互作用产生的一种新效应：对于遵循反对称交换对称性的纠缠双光子，几乎完全的量子存活。这与周期性光子晶格中的完全消失形成对比。
