论文标题
Rydberg Blockade对二价中性原子的过度接触
Hyperentanglement of divalent neutral atoms by Rydberg blockade
论文作者
论文摘要
超疏调〜（HE）是两个以上自由度的两个粒子之间的同时纠缠，与基本物理和量子技术都相关。先前对他一直关注光子的研究。在这里，我们在单个中性原子中研究他。在大多数具有两个价电子和非零核自旋的碱性 - 地球样原子中，有两个稳定的电子状态，即基态和持久的时钟状态，它们可以定义电子量子。同时，他们的核自旋状态可以定义一个核量子。通过Rydberg阻塞效应，我们表明可以在两个附近的两个原子的电子Qubits中生成受控的-z〜（c $ _ {\ text {z}} $）操作，同时在其核Qubits中同时产生c $ _ {z {z} $ c $ c $ c $ c $ c $ c $ c $ c $ c $ c $ c $诱使他。在单个中性原子中诱导他的可能性为基于中性原子研究量子科学和技术提供了新的机会。
Hyperentanglement~(HE), the simultaneous entanglement between two particles in more than one degrees of freedom, is relevant to both fundamental physics and quantum technology. Previous study on HE has been focusing on photons. Here, we study HE in individual neutral atoms. In most alkaline-earth-like atoms with two valence electrons and a nonzero nuclear spin, there are two stable electronic states, the ground state and the long-lived clock state, which can define an electronic qubit. Meanwhile, their nuclear spin states can define a nuclear qubit. By the Rydberg blockade effect, we show that the controlled-Z~(C$_{\text{Z}}$) operation can be generated in the electronic qubits of two nearby atoms, and simultaneously in their nuclear qubits as well, leading to a C$_{\text{Z}}\otimes$C$_{\text{Z}}$ operation which is capable to induce HE. The possibility to induce HE in individual neutral atoms offers new opportunities to study quantum science and technology based on neutral atoms.
