涨落驱动的量子统计非线性放大

中文摘要 AI 辅助

光子统计已步入现代光学的前沿，因为强度涨落和关联塑造了多光子相互作用，并揭示了超越平均强度测量的信息。开发具有显著关联的高质量光子源在这些领域是根本性的需求。在此，我们展示了在自发四波混频中，利用滤波后的放大自发辐射（ASE）实现涨落驱动的量子光非线性统计放大。将相干泵浦框架扩展到涨落场，我们展示了泵浦强度的非线性加权如何与玻色子聚束相结合，以放大量子统计并重塑时间关联。在氮化硅微环中，ASE泵浦将零延迟无条件二阶关联从2.01提升至7.58，并将Hanbury Brown--Twiss关联时间延长了约2.4倍。尽管如此，这种超聚束量子源仍保留了宣布式单光子行为，其$g_H^{(2)}(0)\simeq0.04$，而相同的ASE泵浦在硅波导中支持时间-能量纠缠，原始Franson可见度为89.84%。这些结果确立了驱动场统计作为量子光的一个设计维度，拓宽了高阶关联和非线性物理研究的视野。

英文摘要

Photon statistics have moved to the forefront of modern optics, as intensity fluctuations and correlations shape multiphoton interactions and reveal information beyond mean-intensity measurements. Developing high-quality photon sources with pronounced correlations is a fundamental necessity in these fields. Here we demonstrate fluctuation-driven nonlinear statistical amplification of quantum light in spontaneous four-wave mixing using filtered amplified spontaneous emission (ASE). Extending the coherent-pump framework to fluctuating fields, we show how nonlinear weighting of pump intensity combines with bosonic bunching to amplify quantum statistics and reshape temporal correlations. In a SiN microring, ASE pumping increases the zero-delay unconditional second-order correlation from 2.01 to 7.58 and extends the Hanbury Brown--Twiss correlation time by a factor of approximately 2.4. The super-bunched quantum source nevertheless retains heralded single-photon behaviour with $g_H^{(2)}(0)\simeq0.04$, while the same ASE pump supports time--energy entanglement in a silicon waveguide with a raw Franson visibility of 89.84\%. These results establish driving-field statistics as a design dimension for quantum light, broadening the horizons for research into higher-order correlations and nonlinear physics.

发表机构

• University of Science and Technology of China（中国科学技术大学）
• CAS Center for Excellence in Quantum Information and Quantum Physics, University of Science and Technology of China（中国科学院量子信息与量子物理学前沿卓越中心）
• Laboratory of Quantum Information, University of Science and Technology of China（中国科学技术大学量子信息实验室）

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