论文标题
使用时间域光学处理器探索量子相关的边界
Exploring the boundary of quantum correlations with a time-domain optical processor
论文作者
论文摘要
上下文是量子理论的标志性特征，它捕获了其与任何非秘密隐藏可变性模型的不兼容。 Greenberger- -Horne- Zeilinger（GHz）型悖论是情境性的证明，揭示了这种与确定性逻辑论证的不相容性。但是，GHz型悖论的事件可以包括在最少的环境中，并且使最强的非古典性仍然难以捉摸。在这里，我们得出了一个具有上下文覆盖数的GHz型悖论，并显示该数字饱和量子理论所带来的下限。我们用时间域光纤平台演示了悖论，并基于37维设置中的量子预测，基于高速调制，卷积和同型脉冲脉冲相干光的检测。通过提出和研究高维希尔伯特空间中的强烈情境形式，我们的结果为探索与时间多形的光学系统探索外来量子相关的道路铺平了道路。
Contextuality is a hallmark feature of the quantum theory that captures its incompatibility with any noncontextual hidden-variable model. The Greenberger--Horne--Zeilinger (GHZ)-type paradoxes are proofs of contextuality that reveal this incompatibility with deterministic logical arguments. However, the GHZ-type paradox whose events can be included in the fewest contexts and which brings the strongest nonclassicality remains elusive. Here, we derive a GHZ-type paradox with a context-cover number of three and show this number saturates the lower bound posed by quantum theory. We demonstrate the paradox with a time-domain fiber optical platform and recover the quantum prediction in a 37-dimensional setup based on high-speed modulation, convolution, and homodyne detection of time-multiplexed pulsed coherent light. By proposing and studying a strong form of contextuality in high-dimensional Hilbert space, our results pave the way for the exploration of exotic quantum correlations with time-multiplexed optical systems.
