AI 中文总结
研究宇宙引力子与量子化电磁场基模相互作用，通过分析光子的汉伯里-布朗-特威斯关联，发现其对引力子二阶相干度不敏感，无法从腔模强度关联推断引力子统计特性。
AI 中文摘要
与由宏观质量运动经典产生的引力波不同，引力子的弥漫背景很可能源于因时空曲率演化而放大的引力场零点涨落。由此产生的纠缠态会导致特定的二阶关联效应，最终可能被探测到。为对这一经验预期进行定量分析，我们仔细研究了宇宙引力子与封闭光学谐振腔内具有完美反射壁的量子化电磁场基模之间的相互作用。我们表明，即使不考虑该问题极小的耦合，光子的汉伯里-布朗-特威斯关联对引力子的二阶相干度也不敏感。由于光子的二阶相干度并不反映引力子的关联特性，即使原则上也无法从腔模的强度关联推断出引力子的统计特性（及其超泊松统计）。
英文摘要
Unlike the gravitational waves classically generated by moving macroscopic masses, the diffuse backgrounds of gravitons originate most likely from zero-point fluctuations of the gravitational field amplified by the evolution of the space-time curvature. The resulting entangled states lead to specific second-order correlation effects that could be eventually detected. For a quantitative analysis of this empirical expectation we scrutinize the interactions between the cosmic gravitons and the fundamental mode of a quantized electromagnetic field confined inside a closed optical resonator with perfectly-reflecting walls. We show that the Hanbury-Brown Twiss correlations of the photons are insensitive to the degrees of second-order coherence of the gravitons even barring for the exceedingly small couplings of the problem. Since the degree of second-order coherence of the photons does not reflect the correlation properties of the gravitons, the statistical properties of the gravitons (and their super-Poissonian statistics) cannot be inferred, even in principle, from the intensity correlations of the cavity modes.
Comments40 pages, 3 figures
