论文标题
巨型原子之间无腐蚀耦合的机制
Mechanism of decoherence-free coupling between giant atoms
论文作者
论文摘要
巨大原子是一种量子光学量的新范式，远远超出了通常的本地耦合。以此为基础，在宽带波导中显示了一种新型的无抗性（DF）多体哈密顿人。在这里，它们被纳入一般框架（不依赖主方程），并与具有正常原子的分散性DF汉密尔顿人形成鲜明对比：这两个方案被证明与质量不同的方法相对应，以匹配相同的一般条件，以抑制变形。接下来，我们将巨大原子动力学映射到级联的碰撞模型（CM）中，从而对非平凡的DF Hamiltonians和耦合点拓扑之间的联系提供了直观的解释。辫状配置显示可以实现一个方案，在该方案中，穿梭系统受周期性阶段踢介导原子之间的DF耦合。从CMS理论的角度来看，这显示了一个碰撞模型，其中Ancillas有效地在系统上实现了无耗散的，最大范围的两倍栅极。
Giant atoms are a new paradigm of quantum optics going beyond the usual local coupling. Building on this, a new type of decoherence-free (DF) many-body Hamiltonians was shown in a broadband waveguide. Here, these are incorporated in a general framework (not relying on master equations) and contrasted to dispersive DF Hamiltonians with normal atoms: the two schemes are shown to correspond to qualitatively different ways to match the same general condition for suppressing decoherence. Next, we map the giant atoms dynamics into a cascaded collision model (CM), providing an intuitive interpretation of the connection between non-trivial DF Hamiltonians and coupling points topology. The braided configuration is shown to implement a scheme where a shuttling system subject to periodic phase kicks mediates a DF coupling between the atoms. From the viewpoint of CMs theory, this shows a collision model where ancillas effectively implement a dissipationless, maximally-entangling two-qubit gate on the system.
