论文标题
在过渡金属二分法中持续的山谷激子Qubits的纠缠
Persistent entanglement of valley exciton qubits in transition metal dichalcogenides integrated into a bimodal optical cavity
论文作者
论文摘要
我们报告了居住在$ k $和$ k $ $ k $ $ _2 $ _2 $单层的$ k $ $ k^\ prime $ -Valleys中的两个山谷激子的耗散动力学，并将其集成到Bimodal Optical腔中。在前者中，只有当$ k $和$ k^\ prime $ -Valleys中的激子场引导是严格相等的（谐振分析），才能创建部分纠缠的固定状态。否则，激子Qubits的同意变为零。值得注意的是，在后者（在双峰光腔中的WSE $ _2 $单层）中，发生了从一个子系统（激子/光）转移到另一个子系统（激光/示例）的转移（灯/示例）。因此，始终会产生激子量子尺的有限固定同时发生，而与两个山谷中的激子场失调是无关的。此外，它甚至可以达到1（两个山谷激子的最大纠缠状态）。由于没有严格谐振的真正系统，因此将WSE $ _2 $单层浸入双峰光腔中，这为克服裸露的WSE $ _2 $所面临的挑战提供了机会，打开了一个新颖的潜在码头领域。
We report dissipative dynamics of two valley excitons residing in the $K$ and $K^\prime$-valleys of bare WSe$_2$ monolayer and the one being integrated into a bimodal optical cavity. In the former, only when the exciton-field detunings in the $K$ and $K^\prime$-valleys are rigorously equal (resonant detuning), partially entangled stationary states can be created. Otherwise the concurrence of exciton qubits turns to zero. Remarkably, in the latter (the WSe$_2$ monolayer in a bimodal optical cavity), the transfers of entanglement from one subsystem (exciton/light) to the other (light/exciton) take place. Hence a finite stationary concurrence of exciton qubits is always generated, independent of whether the exciton-field detuning in two valleys is resonant or non-resonant. In addition, it can even reach as high as 1 (maximally entangled state of two valley excitons). Since there no real system which has a strictly resonant detuning, an immersion of the WSe$_2$ monolayer in a bimodal optical cavity provides an opportunity to overcome the challenge facing by the bare WSe$_2$, opening a novel realm of potential qubits.
