论文标题
由密度依赖性耦合引起的量子阵列中的拓扑状态
Topological states in qubit arrays induced by density-dependent coupling
论文作者
论文摘要
量子光子学中光的拓扑状态开放式令人兴奋的可能性，有望对量子纠缠的拓扑保护。在这里，我们提出了一种方法，以实现由有效密度依赖性耦合介导的光子对的拓扑状态，该耦合表现为隧道幅度对光子数量的依赖性。作为一个特定的平台，我们研究了最近邻居耦合量子矩的阵列，其中有效密度依赖性耦合是通过插入辅助频率驱动的谐振器来设计的。我们通过直接评估Zak阶段来证明设计模型的拓扑起源，强调了我们对最先进制造技术提出的可行性。
Topological states of light open exciting possibilities in quantum photonics promising the topological protection of quantum entanglement. Here, we put forward an approach to realize the topological states of photon pairs mediated by the effective density-dependent coupling which is manifested as the dependence of the tunneling amplitude on the number of photons. As a specific platform, we investigate the arrays of nearest-neighbor coupled transmon qubits, where the effective density-dependent coupling is engineered by inserting auxiliary frequency-detuned resonators. We prove the topological origin of the designed model by the direct evaluation of the Zak phase highlighting the feasibility of our proposal for state-of-the-art fabrication technologies.
