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南京大学彭茹雯教授、王牧教授团队最新Physical Review Letters:基于超表面的干涉诱导纠缠工程!

  • 2026-02-16 08:13:56
南京大学彭茹雯教授、王牧教授团队最新Physical Review Letters:基于超表面的干涉诱导纠缠工程!

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基于超表面的干涉诱导纠缠工程

论文信息

南京大学彭茹雯教授、王牧教授团队提出了一种全新的集成化纠缠工程方案,旨在解决量子系统小型化与集成化的核心难题。该团队设计了一种具有几何尺度诱导相位梯度的多通道超表面,通过双光子量子干涉与后选择相结合的原理来实现功能:将两个初始非纠缠、仅偏振态正交(如 |H⟩ 和 |V⟩)的全同光子入射到该超表面,其多通道结构(本工作中 N=7)使每个光子经历特定的偏振变换(通道 Jones 矩阵 Ĵ_m);当两光子路径不可区分时,其在不同输出通道对(共 N(N-1)/2 对)发生量子干涉,从而在后选择条件下主动生成偏振纠缠态。实验上,团队成功利用该单个超表面实现了四种贝尔态在全部21个通道对上的可控生成与分发,验证了超表面作为紧凑、可扩展量子纠缠源用于构建全连接量子网络的巨大潜力。

研究成果于2026年1月13日以题为“Interference-Induced Entanglement Engineering on a Metasurface发表在《Physical Review Letters》上。

图文速览

图1:偏振纠缠转换与单超表面分发示意图。
图2: (a) 制备的超表面扫描电子显微镜图像。(b) 当输入单光子态分别为 |H⟩(输出态用球体表示)和 |V⟩(输出态用棱锥表示)时,7个输出通道在庞加莱球面上对应的斯托克斯参数。偏振椭圆图示了每个输出通道的偏振态。偏振椭圆的颜色与庞加莱球上符号的颜色,对应于 (c) 图中测量曲线的颜色。(c) 当输入单光子态分别为 |H⟩(圆点)和 |V⟩(三角)时,7个输出通道 (CH₁, CH₂, …, CH₇) 测得的符合计数随四分之一波片旋转角度的变化关系。
图3:超表面在 |HV⟩ 入射下产生四种贝尔态并分发给21个通道对的实验演示。
图4:(a) 表格显示了当输入态分别为 |HV⟩ 和 |AD⟩ 时,每个通道对的输出态。(b) 量子态层析测量中四个输出态重建密度矩阵的实部:|Ψ₃,₇⟩ = (|HH⟩ − |VV⟩)/√2,|Ψ₁,₇⟩ = (|HH⟩ + |VV⟩)/√2,|Ψ₁,₆⟩ = (|HV⟩ − |VH⟩)/√2,以及 |Ψ₆,₇⟩ = (|HV⟩ + |VH⟩)/√2。(c) 当输入双光子态变为 |AD⟩ 时,由图2中超表面产生的21个态的测量保真度。

文献来源

DOI: https://doi.org/10.1103/mzmv-7x98

「超表面光学」致力打造综合、权威、前沿的光学领域信息平台,为光学科研工作者、爱好者精准传递学科前沿突破、多模态融合进程与颠覆性应用实践。 我们聚焦微纳光子学、量子光学、超快光学、计算成像等核心方向,追踪光科学与人工智能、生物医学、能源材料、空间探测等领域的深度互融,秉持 “探索、创新、突破、引领”的发展目标,为光学者构建交流平台。欢迎关注,投稿联系:2394448373@qq.com

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  1. CONNECT:[ UseTime:0.000585s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000678s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000261s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000306s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000539s ]
  6. SELECT * FROM `set` [ RunTime:0.000200s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000543s ]
  8. SELECT * FROM `article` WHERE `id` = 465872 LIMIT 1 [ RunTime:0.000403s ]
  9. UPDATE `article` SET `lasttime` = 1771935012 WHERE `id` = 465872 [ RunTime:0.000649s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000227s ]
  11. SELECT * FROM `article` WHERE `id` < 465872 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000401s ]
  12. SELECT * FROM `article` WHERE `id` > 465872 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000404s ]
  13. SELECT * FROM `article` WHERE `id` < 465872 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002521s ]
  14. SELECT * FROM `article` WHERE `id` < 465872 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000995s ]
  15. SELECT * FROM `article` WHERE `id` < 465872 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001095s ]
0.073451s