论文标题
使用时态光子Qudits的纠缠分布与最小内存要求
Entanglement distribution with minimal memory requirements using time-bin photonic qudits
论文作者
论文摘要
在分布式节点之间生成多个纠缠量子对是未来量子互联网的先决条件。为了达到可行的生成速率，基于光子量子位的标准方案需要多个长期量子记忆，这仍然是一个重大的实验挑战。 In this paper, we propose a novel protocol based on $2^m$-dimensional time-bin photonic qudits that allow for the simultaneous generation of multiple ($m$) entangled pairs between two distributed qubit registers and outline a specific implementation of the protocol based on cavity-mediated spin-photon interactions.通过采用QUDIT协议，所需的量子内存时间与节点之间的传输损失与标准量子量方法相比无关。因此，我们的协议可以显着提高近期量子网络的性能。
Generating multiple entangled qubit pairs between distributed nodes is a prerequisite for a future quantum internet. To achieve a practicable generation rate, standard protocols based on photonic qubits require multiple long-term quantum memories, which remains a significant experimental challenge. In this paper, we propose a novel protocol based on $2^m$-dimensional time-bin photonic qudits that allow for the simultaneous generation of multiple ($m$) entangled pairs between two distributed qubit registers and outline a specific implementation of the protocol based on cavity-mediated spin-photon interactions. By adopting the qudit protocol, the required qubit memory time is independent of the transmission loss between the nodes in contrast to standard qubit approaches. As such, our protocol can significantly boost the performance of near-term quantum networks.
