论文标题
耗散配对相互作用：量子不稳定性，拓扑光和体积法律纠缠
Dissipative Pairing Interactions: Quantum Instabilities, Topological Light, and Volume-Law Entanglement
论文作者
论文摘要
我们分析了由耗散性（或非铁人）配对相互作用引起的一类不寻常的骨动力学不稳定性。我们表明，令人惊讶的是，可以将完全稳定的耗散配对相互作用与简单的跳跃或梁切开器相互作用（也稳定）结合在一起，以产生不稳定性。此外，我们发现在这种情况下的耗散稳态一直完全纯净，直到不稳定性阈值（与标准参数不稳定性明显区别）。这些配对引起的不稳定性还表现出对波函数定位的极为明显的敏感性。这提供了一种简单而功能强大的方法，可在具有拓扑带结构的光子（或更通用的骨）晶格中选择性填充和纠缠的边缘模式。潜在的耗散配对交互在实验上是对资源友好的，需要在现有晶格中添加单个额外的局部交互，并且与许多现有平台兼容，包括超导电路。
We analyze an unusual class of bosonic dynamical instabilities that arise from dissipative (or non-Hermitian) pairing interactions. We show that, surprisingly, a completely stable dissipative pairing interaction can be combined with simple hopping or beam-splitter interactions (also stable) to generate instabilities. Further, we find that the dissipative steady state in such a situation remains completely pure up until the instability threshold (in clear distinction from standard parametric instabilities). These pairing-induced instabilities also exhibit an extremely pronounced sensitivity to wavefunction localization. This provides a simple yet powerful method for selectively populating and entangling edge modes of photonic (or more general bosonic) lattices having a topological bandstructure. The underlying dissipative pairing interaction is experimentally resource-friendly, requiring the addition of a single additional localized interaction to an existing lattice, and is compatible with a number of existing platforms, including superconducting circuits.
