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arXiv 2402.18542physics.opticscond-mat.mes-hall
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共振驱动的光谱扩散量子发射体的光子统计

Photon statistics of resonantly driven spectrally diffusive quantum emitters

Université Paris-Saclay, UVSQ, CNRS, GEMaC(巴黎萨克雷大学、凡尔赛大学、法国国家科学研究中心、GEMaC)

Aymeric Delteil, Stéphanie Buil, Jean-Pierre Hermier

AI总结:

本研究通过共振激发和光子统计分析,揭示了光谱扩散过程的特性,为理解量子发射体的稳定性提供了新视角。

摘要:

在固态中,大量单光子发射体表现出高质量的光物理性质,并具有集成潜力。然而,在许多情况下,基质诱导的发射波长在时间上产生波动,限制了基于不可区分光子的应用潜力。因此,深入理解底层的光谱扩散过程对于提高光发射的稳定性至关重要。在这里,我们理论上研究了由共振激光驱动的发射体的光子统计,并受两种不同静态光谱扩散过程之一的影响——连续扩散过程和基于离散光谱跳跃的过程,这两种过程已知可以建模各种固态发射体的光谱扩散。我们显示,光发射的统计特性携带了几种实验上可访问的特征,使能够区分两种模型类别,既在强度相关函数的短时间尺度上,在集成强度的波动的长时间尺度上。这些结果表明,共振激发结合光子统计为光谱扩散过程提供了丰富的访问途径,提供了超越纯表征不均匀形状和噪声相关时间的信息。顺便,我们的发现为最近关于六方氮化硼中B中心光谱扩散的实验结果提供了新的见解,更深入地揭示了其光谱扩散机制。

英文摘要:

In the solid state, a large variety of single-photon emitters present high quality photophysical properties together with a potential for integration. However, in many cases, the host matrix induces fluctuations of the emission wavelength in time, limiting the potential applications based on indistinguishable photons. A deep understanding of the underlying spectral diffusion processes is therefore of high importance for improving the stability of the light emission. Here, we theoretically investigate the photon statistics of an emitter driven by a resonant laser, and subject to either of two qualitatively different stationary spectral diffusion processes - a continuous diffusion process and a process based on discrete spectral jumps, both of which being known to model the spectral diffusion of various solid-state emitters. We show that the statistics of light emission carries several experimentally accessible signatures that allow to discriminate between the two classes of models, both at short times in the intensity correlation function, and at long times in the fluctuations of the integrated intensity. These results establish that resonant excitation combined with photon statistics offers a rich access to the spectral diffusion processes, yielding information that goes beyond the bare characterization of the inhomogeneous shape and noise correlation time. Incidentally, our findings shed a new light on recent experimental results of spectral diffusion of B centers in hexagonal boron nitride, providing more insight in their spectral diffusion mechanisms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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