Realization of the Quantum Toffoli Gate with Trapped Ions
Realization of the Quantum Toffoli Gate with Trapped Ions
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DOI：
10.1103/physrevlett.102.040501
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发表时间：
2009-01-30
影响因子：
8.6
通讯作者：
Blatt, R.
中科院分区：
文献类型：
--
作者：
Monz, T.;Kim, K.;Blatt, R.
作用于两个以上量子位的门是有吸引力的，因为它们可以替代两个量子位门的复杂序列，从而有望实现更快的执行速度和更高的保真度。一个重要的多量子位操作是量子Toffoli门，它根据两个控制量子位的状态对目标量子位执行受控的非操作。在这里，我们提出了第一个实验实现的量子Toffoli门在离子阱量子计算机，实现了71（3）%的平均门保真度。我们的实现是特别有效的，因为相关的逻辑信息被直接编码在离子串的运动中。
Gates acting on more than two qubits are appealing as they can substitute complex sequences of two-qubit gates, thus promising faster execution and higher fidelity. One important multiqubit operation is the quantum Toffoli gate that performs a controlled NOT operation on a target qubit depending on the state of two control qubits. Here we present the first experimental realization of the quantum Toffoli gate in an ion trap quantum computer, achieving a mean gate fidelity of 71(3)%. Our implementation is particularly efficient as the relevant logic information is directly encoded in the motion of the ion string.