论文标题
中性原子纠缠使用绝热rydberg敷料
Neutral atom entanglement using adiabatic Rydberg dressing
论文作者
论文摘要
我们使用绝热的Rydberg敷料范式来重新审视两倍纠缠的门Mølmer-Sørensen门的实施，用于[Phys所研究的中性原子。修订版A 101，030301（R）（2020）]。我们研究了使用两光子过渡的快速绝热通道的实现，该转变不需要使用超紫色激光器，并且只能使用一个固定的所有激光频率的一个场进行振幅调制来实现。我们发现，纠缠的门忠诚度可与单相激发相媲美，可以通过两光子激发来实现。此外，我们解决了如何使用绝热敷料方案来实施完美的Rydberg封锁政权之外的纠缠大门。我们表明，使用绝热敷料，我们可以通过雷德伯格相互作用产生的纠缠基本限制来实现盖彩的规模，同时在双重兴奋的瑞德伯格州同时保留了有限的人口。这允许在封锁半径之外分开的原子的快速高保真门。
We revisit the implementation of a two-qubit entangling gate, the Mølmer-Sørensen gate, using the adiabatic Rydberg dressing paradigm for neutral atoms as studied in [Phys. Rev. A 101, 030301 (R) (2020)]. We study the implementation of rapid adiabatic passage using a two-photon transition, which does not require the use of an ultra-violet laser, and can be implemented using only amplitude modulation of one field with all laser frequencies fixed. We find that entangling gate fidelities, comparable to the one-photon excitation, are achievable with the two-photon excitation. Moreover, we address how the adiabatic dressing protocol can be used to implement entangling gates outside the regime of a perfect Rydberg blockade. We show that using adiabatic dressing we can achieve scaling of gate fidelity set by the fundamental limits to entanglement generated by the Rydberg interactions while simultaneously retaining a limited population in the doubly-excited Rydberg state. This allows for fast high fidelity gates for atoms separated beyond the blockade radius.
