论文标题
可调的手性绑定状态与巨大原子
Tunable Chiral Bound States with Giant Atoms
论文作者
论文摘要
我们在由超导巨型原子和约瑟夫森光子晶波导（PCW）组成的系统中提出了可调的手性结合状态，在其他量子设置中没有类似物。手性结合状态是由于巨型原子与波导多点的非局部耦合的干扰而产生的。可以通过更改原子波导耦合或PCW的外部偏置来调节手性。此外，手性结合状态可以诱导多个巨型原子耦合到同一波导之间的方向性偶极 - 偶极相互作用。我们的建议准备在超导电路的实验中实施，可以将其用作可调工具箱，以实现拓扑相变和量子模拟。
We propose tunable chiral bound states in a system composed of superconducting giant atoms and a Josephson photonic-crystal waveguide (PCW), with no analog in other quantum setups. The chiral bound states arise due to interference in the nonlocal coupling of a giant atom to multiple points of the waveguide. The chirality can be tuned by changing either the atom-waveguide coupling or the external bias of the PCW. Furthermore, the chiral bound states can induce directional dipole-dipole interactions between multiple giant atoms coupling to the same waveguide. Our proposal is ready to be implemented in experiments with superconducting circuits, where it can be used as a tunable toolbox to realize topological phase transitions and quantum simulations.
