标题： N路频率光束分割器用于量子光子学 显示英文标题

标题： N-Way Frequency Beamsplitter for Quantum Photonics

摘要： 光学网络由于其低损耗和能够通过光频模式扩展到许多信息信道，成为信息传输的主要平台。 为了充分利用该平台中光的量子特性，希望通过同时协调多个信道之间的线性、分束器类型相互作用来操控高维叠加态。 我们提出了一种方法，通过N路布喇格散射四波混频实现N个光频模式之间的同时全连接耦合。 通过利用频率自由度，在固定体积和损耗的相互作用介质中可以复用额外的模式，避免引入过多噪声。 在四波混频方法下，我们将频率编码的两模相互作用理论推广到N个模，并通过展示三路多光子干涉实验验证了该方案的量子特性。 两输入光子分布在三个频率模中，并表现出与两经典（相干态）输入不同的干涉。 这些结果表明，我们的方法在频率域中实现通用N模系统的光子量子信息处理可扩展性方面具有潜力。 显示英文摘要

摘要： Optical networks are the leading platform for the transfer of information due to their low loss and ability to scale to many information channels using optical frequency modes. To fully leverage the quantum properties of light in this platform, it is desired to manipulate higher-dimensional superpositions by orchestrating linear, beamsplitter-type interactions between several channels simultaneously. We propose a method of achieving simultaneous, all-to-all coupling between N optical frequency modes via N-way Bragg-scattering four-wave mixing. By exploiting the frequency degree of freedom, additional modes can be multiplexed in an interaction medium of fixed volume and loss, avoiding the introduction of excess noise. We generalize the theory of the frequency-encoded two-mode interaction to N modes under this four-wave mixing approach and experimentally verify the quantum nature of this scheme by demonstrating three-way multiphoton interference. The two input photons are shared among three frequency modes and display interference differing from that of two classical (coherent-state) inputs. These results show the potential of our approach for the scalability of photonic quantum information processing to general N-mode systems in the frequency domain.