论文标题
使用受控的遗相Qubits的纠缠生成
Entanglement generation using a controlled-phase gate for time-bin qubits
论文作者
论文摘要
量子逻辑门对于许多物理系统中的量子计算和量子信息处理很重要。虽然时量量子台适用于光纤上的量子通信，但尚未实现许多基本的量子逻辑门。在这里，我们为使用基于电极调节器的2x2光学开关的时态量子台展示了一个受控的相（C相）门。 Hong-ou-mandel干扰测量表明，该开关可以用作时间依赖的光束分离器，其吐痰比可变。我们确认，由于开关的C相栅极操作，将两个独立的时量量子位纠缠在一起。
Quantum logic gates are important for quantum computations and quantum information processing in numerous physical systems. While time-bin qubits are suited for quantum communications over optical fiber, many essential quantum logic gates for them have not yet been realized. Here, we demonstrated a controlled-phase (C-Phase) gate for time-bin qubits that uses a 2x2 optical switch based on an electro-optic modulator. A Hong-Ou-Mandel interference measurement showed that the switch could work as a time-dependent beam splitter with a variable spitting ratio. We confirmed that two independent time-bin qubits were entangled as a result of the C-Phase gate operation with the switch.
