arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.05369quant-phphysics.optics
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在可重构光子芯片中通过非局域光子减法实现连续和离散可变量子涡旋态

Engineering continuous and discrete variable quantum vortex states by nonlocal photon subtraction in a reconfigurable photonic chip

David Barral, Jesús Liñares, Daniel Balado

摘要:

研究了光波导中双模和N模纠缠量子态的产生。为此,我们提出了一个量子光子电路,产生一个可重构的叠加光子减法两个单模压缩态。在后选择条件下,得到了可能用于量子信息处理的连续变量或离散变量纠缠态。同样,嵌套导致更高维度的纠缠与类似的设计,使非高斯连续变量集群状态的产生。此外,我们通过光的量子涡旋态的产生显示了设备的操作,并提出了一个集成的设备,测量它们的顺序和手性。最后,我们利用光场分布、维格纳函数和对数负性研究了该方案产生的量子态的非高斯性、非经典性和纠缠性。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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