arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.01796quant-ph
收藏

片上波导中光子量子比特的按需存储

On-demand quantum storage of photonic qubits in an on-chip waveguide

Chao Liu, Tian-Xiang Zhu, Ming-Xu Su, You-Zhi Ma, Zong-Quan Zhou, Chuan-Feng Li, Guang-Can Guo

摘要:

光子量子存储器是量子信息处理的核心技术。为了便于实际应用,人们致力于在固体中制作各种波导的集成量子存储器。然而,量子位的按需存储,这是QIP的基本要求,仍然是具有挑战性的实现使用这种集成的量子存储器。在这里,我们报告的按需存储的时间仓量子位的片上波导存储器的表面上的$^{151}$ Eu $^{3+}$:Y $_2$ SiO $_5$晶体,利用斯塔克调制原子频率梳协议。$99.3\%\pm0.2\%$的量子位存储保真度是在每脉冲0.5个光子的输入下获得的,远远超过了使用经典的测量和准备策略可实现的最高保真度。开发的具有按需检索能力的集成量子存储器代表了集成量子节点在量子网络中实际应用的重要一步。

英文摘要:

Photonic quantum memory is the core element in quantum information processing (QIP). For the scalable and convenient practical applications, great efforts have been devoted to the integrated quantum memory based on various waveguides fabricated in solids. However, on-demand storage of qubits, which is an essential requirement for QIP, is still challenging to be implemented using such integrated quantum memory. Here we report the on-demand storage of time-bin qubits in an on-chip waveguide memory on the surface of a $^{151}$Eu$^{3+}$:Y$_2$SiO$_5$ crystal, utilizing the Stark modulated atomic frequency comb protocol. A qubit storage fidelity of $99.3\%\pm0.2\%$ is obtained with a input of 0.5 photons per pulse, far beyond the highest fidelity achievable using the classical measure-and-prepare strategy. The developed integrated quantum memory with the on-demand retrieval capability, represents an important step towards practical applications of integrated quantum nodes in quantum networks.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑