论文标题
使用光学涡流的同时传递协议的实现
Implementation of a simultaneous message passing protocol using optical vortices
论文作者
论文摘要
光量子门的实施是以融合非经典光源的成本，其光子较低，因此遭受了长时间的收集时间。量子模仿光学门将量子系统的好处与使用强烈光束的方便相结合。在这里，我们关注使用结构化光的工具的经典实现（C-SWAP）门的经典实现。 C-Swap Gate是一个三克门，其中一个输入量子位控制其他两个量子位之间的信息交换。我们使用Laguerre-Gauss梁实现C-SWAP门，并演示其主要应用之一：两个信号的比较而没有揭示其内容，即同时发送消息的协议。我们使用数字微旋转设备作为空间光调制器，以KHz的调制速度实现信号比较测量。我们的系统能够执行动态误差分析和归一化过程，从而克服了数据后处理的必要性并大大减少了比较时间。
The implementation of optical quantum gates comes at the cost of incorporating a source of nonclassical light, which suffers from a low flux of photons, and thus, long acquisition times. Quantum-mimetic optical gates combine the benefits of quantum systems with the convenience of using intense light beams. Here, we are concerned with the classical implementation of a controlled-SWAP (c-SWAP) gate using the tools of structured light. A c-SWAP gate is a three-qubit gate, where one of the input qubits controls the exchange of information between the other two qubits. We use Laguerre-Gauss beams to realize the c-SWAP gate and demonstrate one of its primary applications: the comparison of two signals without revealing their content, i.e., a simultaneous message-passing protocol. We achieve signal-comparison measurements with modulation speeds of kHz using a digital micromirror device as a spatial light modulator. Our system is capable of performing dynamic error analysis and a normalization procedure, which overcomes the necessity of data postprocessing and largely reduces comparison times.
