Chiral topological photonics with an embedded quantum emitter
Chiral topological photonics with an embedded quantum emitter
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DOI：
10.1364/optica.393035
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发表时间：
2020-12-20
期刊：
影响因子：
10.4
通讯作者：
Wilson, Luke R.
中科院分区：
文献类型：
--
作者：
Mehrabad, Mahmoud Jalali;Foster, Andrew P.;Wilson, Luke R.
拓扑光子界面支持具有螺旋特征的拓扑非平凡光学模式。当与具有圆偏振跃迁偶极矩的嵌入式量子发射器结合时，由于自旋动量锁定而形成手征量子光学界面。在这里，我们实验上实现这样的接口集成半导体量子点到谷霍尔拓扑光子晶体波导。我们利用强大的波导传输来创建支持螺旋模式的环形谐振器。量子点跃迁的手性耦合，方向对比度高达75%，被证明。该接口还支持一个拓扑平凡的模式，比较，使我们能够清楚地证明拓扑提供的保护，以非平凡的模式。由The Optical Society根据Creative Commons Attribution 4.0 License条款发布。
Topological photonic interfaces support topologically nontrivial optical modes with helical character. When combined with an embedded quantum emitter that has a circularly polarized transition dipole moment, a chiral quantum optical interface is formed due to spin-momentum locking. Here, we experimentally realize such an interface by integrating semiconductor quantum dots into a valley-Hall topological photonic crystal waveguide. We harness the robust waveguide transport to create a ring resonator that supports helical modes. Chiral coupling of quantum dot transitions, with directional contrast as high as 75%, is demonstrated. The interface also supports a topologically trivial mode, comparison with which allows us to clearly demonstrate the protection afforded by topology to the nontrivial mode. Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License.