多通道量子关联成像技术

超纠缠可显著提高希尔伯特空间的维度，实现新型及高效的量子信息处理。同时，基于量子纠缠的关联成像是一种新颖的成像技术，可用于量子力学基本原理的检验及低照度的生物成像应用。但是目前尚未有将超纠缠态与量子关联成像有效结合的相关研究报道。因此，本项目中将致力于研究双光子偏振、频率等自由度超纠缠态的实验调控方法，并应用于量子关联成像技术中：在量子信息应用方面，利用超纠缠态中偏振及频率自由度的复用与解复用，实现多通道并行的量子关联成像，这对于显著提高量子图像的处理效率及传输容量具有重要意义。在基础物理问题方面，利用超纠缠态调控，揭示多通道的量子关联成像技术所涉及到量子力学机制，如非定域性及高维纠缠特性，为阐明关联成像究竟属于经典物理还是量子物理范畴这一争议提供新的视角。

Hyperentangled states can significantly increase the dimension of a Hilbert space, and realize new and efficient quantum information protocols. Meanwhile, quantum-entanglement-based correlated imaging is a novel imaging technique that have been utilized intensively in fundamental test of quantum mechanics and for bio-imaging at ultra-low-light-level illumination. However, the combination of hyperentanglement with quantum correlated imaging has not yet been reported up to now. Here we focus on the manipulation and control of two-photon polarization-frequency hyperentangled states, and on the integration of hyperentanglement into the correlated imaging. From the applied point of view, we will construct the multichannel parallel ghost imaging system based on simultaneous polarization and frequency multiplexing and demultiplexing, which will find great potential in the future quantum network for high-efficient quantum image processing and transmission. From the fundamental point of view, we will reveal the inherent quantum mechanics and new features of our multichannel imaging system, such as nonlocality and inherently high-dimensional nature. Then we could provide a new insight and possible resolution for the historical issue of whether correlated imaging is a consequence of classical physical or quantum mechanics.