光量子信息处理中混合架构的实验探究
发布时间：2018-11-24 21:14
【摘要】：本论文致力于从实验上探究光量子信息科学中一种新兴的研究框架,其整合了传统上分隔已久的两种分别基于离散变量与连续变量的路线,将光子探测(光子数)和平衡零拍探测(光场位相及振幅分量)结合在一个实验当中,充分利用了各自在光量子信息处理中的特点和优势。在这种混合架构下,我们首先在实验上制备了两种高纯度的非高斯态,即光子数态和薛定谔猫态,他们分别对应着光量子信息中两种不同的量子比特载体。得益于高探测效率的超导纳米线单光子探测器,量子态的制备率达到了前所未有的水平,这极大地促进了其在后续量子信息协议中的应用。比如,基于上述两种量子态,我们首次在实验上实现了一种包含“类粒子”和“类波动”量子比特的杂化纠缠态,并将其拓展到量子三元之间的杂化纠缠态。这种全新的纠缠态为异质光量子信息网络的实现铺平了道路,从而有效地结合基于离散和连续变量的操作和技术。此外,我们也首次在实验上展示了一种光场压缩致使的微观一宏观纠缠态。除了所述量子态的制备,基于时域同步的光纤激光器,我们还搭建了一套高效率低噪声的频率上转换系统。这套转换系统不仅能够将量子态的频谱延伸到现有技术难以实现的波长,而且其本身也可以作为一个高效率的红外光子探测器。基于这套系统,我们分别实现了红外光子可分辨探测和少光子水平红外灵敏成像。
[Abstract]:This thesis is devoted to exploring experimentally a new research framework in optical quantum information science, which integrates two long-separated routes based on discrete variables and continuous variables, respectively. Photon detection (photon number) and balanced zero-beat detection (light field phase and amplitude component) are combined in a single experiment to make full use of the characteristics and advantages of each other in optical quantum information processing. In this hybrid structure, we first prepare two kinds of high purity non-Gao Si states, namely photon number state and Schrodinger cat state, which correspond to two different quantum bit carriers in optical quantum information. Thanks to the high detection efficiency of the superconducting nanowire single-photon detector, the preparation rate of quantum state has reached an unprecedented level, which greatly promotes its application in the subsequent quantum information protocol. For example, based on the above two quantum states, we first implement a hybrid entangled state containing "quasi-particle" and "quasi-wave" quantum bits, and extend it to the hybrid entangled state between quantum ternary. This new entangled state paves the way for the realization of heterogeneous optical quantum information networks, thus effectively combining operations and techniques based on discrete and continuous variables. In addition, we also show a microscopic and macroscopic entangled state caused by light field squeezing for the first time. In addition to the preparation of the quantum states, a high efficiency and low noise frequency up-conversion system is built based on the time-domain synchronous fiber laser. This conversion system can not only extend the spectrum of quantum states to wavelengths that are difficult to be realized in the existing technology, but also act as a highly efficient infrared photonic detector. Based on this system, infrared photonic resolution detection and low photon level infrared sensitive imaging are realized respectively.
【学位授予单位】：华东师范大学
【学位级别】：博士
【学位授予年份】：2015
【分类号】：O431.2
，
本文编号：2355086
[Abstract]:This thesis is devoted to exploring experimentally a new research framework in optical quantum information science, which integrates two long-separated routes based on discrete variables and continuous variables, respectively. Photon detection (photon number) and balanced zero-beat detection (light field phase and amplitude component) are combined in a single experiment to make full use of the characteristics and advantages of each other in optical quantum information processing. In this hybrid structure, we first prepare two kinds of high purity non-Gao Si states, namely photon number state and Schrodinger cat state, which correspond to two different quantum bit carriers in optical quantum information. Thanks to the high detection efficiency of the superconducting nanowire single-photon detector, the preparation rate of quantum state has reached an unprecedented level, which greatly promotes its application in the subsequent quantum information protocol. For example, based on the above two quantum states, we first implement a hybrid entangled state containing "quasi-particle" and "quasi-wave" quantum bits, and extend it to the hybrid entangled state between quantum ternary. This new entangled state paves the way for the realization of heterogeneous optical quantum information networks, thus effectively combining operations and techniques based on discrete and continuous variables. In addition, we also show a microscopic and macroscopic entangled state caused by light field squeezing for the first time. In addition to the preparation of the quantum states, a high efficiency and low noise frequency up-conversion system is built based on the time-domain synchronous fiber laser. This conversion system can not only extend the spectrum of quantum states to wavelengths that are difficult to be realized in the existing technology, but also act as a highly efficient infrared photonic detector. Based on this system, infrared photonic resolution detection and low photon level infrared sensitive imaging are realized respectively.
【学位授予单位】：华东师范大学
【学位级别】：博士
【学位授予年份】：2015
【分类号】：O431.2
，
本文编号：2355086
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