论文标题
可重新配置的光子芯片中的非局部光子减去工程连续和离散的量子涡流状态
Engineering continuous and discrete variable quantum vortex states by nonlocal photon subtraction in a reconfigurable photonic chip
论文作者
论文摘要
我们研究了光学波导中纠缠的两种和N模式量子状态的产生。为此，我们提出了一个量子光子电路，该电路在两个单模式挤压状态下产生可重构光子减法的叠加。在选择后，获得了具有量子信息处理可能性的连续变量或离散变量纠缠状态。同样，嵌套带来了具有类似设计的更高维度纠缠，从而使非高斯连续可变簇状态的产生产生。此外，我们通过生成光的量子涡流状态来显示设备的操作，并提出了一种测量其顺序和交接性的集成设备。最后，我们研究了通过光场强度分布，Wigner函数和对数负性产生的量子状态的非高斯性，非经典性和纠缠。
We study the production of entangled two- and N-mode quantum states of light in optical waveguides. To this end, we propose a quantum photonic circuit that produces a reconfigurable superposition of photon subtraction on two single-mode squeezed states. Under postselection, continuous variable or discrete variable entangled states with possibilities in quantum information processing are obtained. Likewise, nesting leads to higher-dimension entanglement with a similar design, enabling the generation of non-Gaussian continuous variable cluster states. Additionally, we show the operation of the device through the generation of quantum vortex states of light and propose an integrated device that measures their order and handedness. Finally, we study the non-Gaussianity, nonclassicality, and entanglement of the quantum states generated with this scheme by means of the optical field-strength distribution, Wigner function, and logarithmic negativity.
