论文标题
使用稀土离子的电 - 核波形的通用量子计算
Universal quantum computing using electro-nuclear wavefunctions of rare-earth ions
论文作者
论文摘要
我们提出了一种基于Kramers稀土离子的通用量子计算方案。在存在Zeeman-Split电子晶体场基态的存在下，它们的核自旋是“被动”量子的“被动”量子。可以通过具有磁矩的快速相干向激发的晶体状态的快速相干过渡来光学地激活这些量子位。这些状态之间的偶极相互作用用于实现CNOT门。我们将我们的建议与基于硅中的磷供体原子的类似提案进行了比较，并通过较慢的偶极子阻断来讨论了与稀土实现相比的明显改善的CNOT GATE时间。
We propose a scheme for universal quantum computing based on Kramers rare-earth ions. Their nuclear spins in the presence of a Zeeman-split electronic crystal field ground state act as 'passive' qubits which store quantum information. The qubits can be activated optically by fast coherent transitions to excited crystal field states with a magnetic moment. The dipole interaction between these states is used to implement CNOT gates. We compare our proposal with a similar one based on phosphorus donor atoms in silicon and discuss the significantly improved CNOT gate time as compared to rare-earth implementations via the slower dipole blockade.
