论文标题
通过多个硬币纠缠的国家一代
Entangled state generation via quantum walks with multiple coins
论文作者
论文摘要
从量子理论基础和技术应用中，纠缠状态的产生至关重要。纠缠交换提供了一种有效的方法来生成量子通信协议中的纠缠。但是，仅使用线性元素和粒子探测器，无法实现Qudits的完美铃铛测量，即纠缠交换的关键。为了避免这种瓶颈，我们提出了一个新的方案，以生成纠缠状态，包括两种纠缠状态，两个问题的纠缠状态，三分之二的GHz状态和三个Qudit GHz状态，通过几个量子步行模型在几个指定方之间，有多个硬币。然后，我们在IBM量子平台上的几个指定方之间对贝尔状态和三分之一的GHz状态进行实验实现，结果通过预构量层析成像具有高保真度。最后，我们在多方量子秘密共享中对计划的实际应用。
Generation of entangled state is of paramount importance both from quantum theoretical foundation and technology applications. Entanglement swapping provides an efficient method to generate entanglement in quantum communication protocols. However, perfect Bell measurements for qudits, the key to entanglement swapping, have been proven impossible to achieve by using only linear elements and particle detectors. To avoid this bottleneck, we propose a novel scheme to generate entangled state including two-qubit entangled state, two-qudit entangled state, three-qubit GHZ state and three-qudit GHZ state between several designate parties via the model of quantum walks with multiple coins. Then we conduct experimental realization of Bell state and three-qubit GHZ state between several designate parties on IBM quantum platform and the result has high fidelity by preforming quantum tomography. In the end, we give a practical application of our scheme in multiparty quantum secret sharing.
