论文标题
用单个光子实现确定性量子toffoli门
Realization of a deterministic quantum Toffoli gate with a single photon
论文作者
论文摘要
量子控制的门（包括受控门和Toffoli门）在许多量子信息处理方案中起关键作用。我们通过利用轨道 - 角度摩托明和单个光子的自由度极化程度来设计和实验证明确定性的Toffoli门。此外，我们通过使用受控门来生成钟状状态。在我们的实验中，Toffoli门的有效转换率为$（95.1 \ pm3.2）\％$。此外，我们的实验设置不需要任何辅助光子和概率后选择。
Quantum controlled-logic gates, including controlled NOT gate and Toffoli gate, play critical roles in lots of quantum information processing schemes. We design and experimentally demonstrate deterministic Toffoli gate by utilizing orbital-angular-momentum and polarization degrees of freedom of a single photon. In addition, we generate Bell states by using the controlled NOT gate. The effective conversion rate of the Toffoli gate in our experiment is $(95.1\pm3.2)\%$. Furthermore, our experimental setup does not require any auxiliary photons and probabilistic post selections.
