Experimental Preparation and Manipulation of Squeezed Cat States via an All‐Optical In‐Line Squeezer
Experimental Preparation and Manipulation of Squeezed Cat States via an All‐Optical In‐Line Squeezer
复制标题
DOI：
10.1002/lpor.202200336
复制
发表时间：
2022-09
影响因子：
11
通讯作者：
Meihong Wang;Miao Zhang;Zhongzhong Qin;Qiang Zhang;Li Zeng;Xiaolong Su;C. Xie;K. Peng
中科院分区：
文献类型：
--
作者：
Meihong Wang;Miao Zhang;Zhongzhong Qin;Qiang Zhang;Li Zeng;Xiaolong Su;C. Xie;K. Peng
压缩猫态是一种重要的量子资源，可用于量子纠错和减缓光学猫态的退相干。然而，制备具有高产生率的压缩猫态，并有效地操纵它，仍然具有挑战性。在这项工作中，一个高性能的全光同轴压缩器的开发，以制备压缩猫态和操纵的正交压缩的相位。该方案的优点是可以通过改变压缩器的工作条件来控制压缩猫态的正交压缩相位，并且通过在线压缩器的确定性压缩操作可以获得更高的产生速率。压缩猫态的产生速率达到2kHz，与初始猫态相同。这里提出的全光在线挤压器消除了离线挤压器所需的电光和光电转换的要求，从而实现了对非高斯态的高带宽挤压操作。这些结果提供了一种制备和操纵光学压缩猫态的有效方法，使其在全光量子信息处理中的应用更近了一步。
The squeezed cat state, an essential quantum resource, can be used for quantum error correction and slowing decoherence of the optical cat state. However, preparing a squeezed cat state with high generation rate, and effectively manipulating it, remain challenging. In this work, a high‐performance all‐optical in‐line squeezer is developed to prepare a squeezed cat state and manipulate the phase of the quadrature squeezing. This scheme has the advantages that the phase of the quadrature squeezing of the squeezed cat state can be manipulated by changing the working condition of the squeezer, and that a higher generation rate can be achieved via the deterministic squeezing operation of the in‐line squeezer. The generation rate of squeezed cat states reaches 2 kHz, the same as that of the initial cat state. The all‐optical in‐line squeezer proposed here removes the requirements of electro‐optic and opto‐electric conversions necessary for an off‐line squeezer, thus enabling high‐bandwidth squeezing operations on non‐Gaussian states. These results provide an efficient method to prepare and manipulate optical squeezed cat states, which makes a step closer to their applications in all‐optical quantum information processing.