超连续谱脉冲中的多模量子关联
Multimode Quantum Correlations in Supercontinuum Pulses
AI总结：
该研究针对超连续谱光噪声表征未涉及量子特性的问题，实验表征了光子晶体光纤产生的超连续谱光的量子噪声及光谱关联，通过基矢变换证实强非线性下部分基矢的噪声振幅可低于散粒噪声极限。
摘要：
超连续谱（SC）光具有复杂的光谱噪声结构，对其进行准确表征对于从基础层面理解其物理机制及相关应用均十分重要。目前已有多项实验和理论层面的噪声表征研究开展，但均未考虑量子力学特性。本文展示了对光子晶体光纤产生的SC光中形成的量子噪声及其光谱关联的实验表征。此外，通过对这些关联施加合适的基矢变换，我们证明即便在非线性极强的情况下，部分基矢下的SC噪声振幅可被压缩至散粒噪声极限以下。
英文摘要：
Suprecontinuum (SC) light contains complex spectral noise structure and its accurate characterization is important for fundamental understanding of its physics as well as for its applications. Several experimental and theoretical noise characterizations have been performed so far. However, none of them takes into account the quantum mechanical properties. Here, we demonstrate experimental characterisation of quantum noise and its spectral correlations formed in the SC light generated from a photonic crystal fiber. Moreover, by applying an appropriate basis transformation to these correlations, we demonstrate that the SC noise amplitude can be squeezed below the shot-noise limit in some bases, even in the presence of excessively large nonlinearities.
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