论文标题
两个rydberg原子的偶极偶极相互作用驱动的抗块
Dipole-dipole interaction driven antiblockade of two Rydberg atoms
论文作者
论文摘要
当远距离范德华的相互作用比激光 - 原子耦合更强时，禁止多个rydberg原子的共振激光激发。 Rydberg的封锁可能会受到侵犯，即同时激发一个以上的rydberg原子，通过异常激发激发，从而引起抗震动。 Rydberg Antiblockade产生了密切相关的多体动力学和自旋轨道耦合，并且还找到了量子计算应用。我们研究了通过偶极 - 偶极交换相互作用的两个rydberg原子的抗块动力学，而不是常用的范德华相互作用。我们研究当前Rydberg原子实验中的典型情况，通过改变Rydberg状态耦合，可以实现不同类型的偶极偶极相互作用。有效的哈密顿统治是基础抗块动力学的。我们说明，几何门可以用Rydberg Antiblockade实现，这与Rydberg State的衰变相当强大。我们的研究可能会刺激量子光学器件的新实验和理论探索，并与由偶极 - 偶极相互作用驱动的Rydberg Antiblockade强烈相互作用的多体动力学。
Resonant laser excitation of multiple Rydberg atoms are prohibited, leading to Rydberg blockade, when the long-range van der Waals interactions are stronger than the laser-atom coupling. Rydberg blockade can be violated, i.e. simultaneous excitation of more than one Rydberg atoms, by off-resonant laser excitation, causing an excitation antiblockade. Rydberg antiblockade gives rise to strongly correlated many-body dynamics and spin-orbit coupling, and also finds quantum computation applications. Instead of commonly used van der Waals interactions, we investigate antiblockade dynamics of two Rydberg atoms interacting via dipole-dipole exchange interactions. We study typical situations in current Rydberg atoms experiments, where different types of dipole-dipole interactions can be achieved by varying Rydberg state couplings. Effective Hamiltonian governing underlying antiblockade dynamics is derived. We illustrate that geometric gates can be realized with the Rydberg antiblockade which is robust against decay of Rydberg states. Our study may stimulate new experimental and theoretical exploration of quantum optics and strongly interacting many-body dynamics with Rydberg antiblockade driven by dipole-dipole interactions.
