All-Fiber Broadband Photon Pair Generation in Dispersion Flattened Highly Non-Linear Fibers

IF 2.1 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Journal Pub Date : 2025-02-14 DOI:10.1109/JPHOT.2025.3542592

Anadi Agnihotri;Pradeep Kumar Krishnamurthy

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引用次数: 0

Abstract

We demonstrate an all-fiber broadband photon pair source based on four wave mixing (FWM) process in dispersion flattened highly non-linear fiber (DF-HNLF). The fiber exhibits a zero dispersion slope near 1550 nm, allowing phase-matched FWM over entire S, C, and L bands and thus efficient generation of signal and idler photons. A comparative theoretical study between conventional dispersion-shifted fiber (DSF) and DF-HNLF highlights the spectral range differences in the generation of photon pairs. We measure coincidence counts at three different sets of wavelengths. To study the effects of Raman scattering, which acts as noise source in these types of fibers, we calculate the correlation

$g^{(2)}(\tau)$

at different pump powers. We use stimulated emission tomography to characterize the generation of photon pairs across the S, C, and L bands. We show that DF-HNLF is an ideal medium for generating correlated photons over a broad spectral range (

$>\!\!100\,\text{nm}$

), making it suitable for frequency-multiplexed quantum communication systems. We estimate the photon pair generation efficiency to be 0.05

$\text{mW}^{-2}/\text{pulse}$

查看原文本刊更多论文

色散平坦化高非线性光纤中全光纤宽带光子对的产生

我们展示了一种全光纤宽带光子对源，它基于色散扁平高非线性光纤（DF-HNLF）中的四波混合（FWM）过程。这种光纤在 1550 nm 附近的色散斜率为零，因此可以在整个 S、C 和 L 波段实现相位匹配的 FWM，从而高效地产生信号光子和惰性光子。通过对传统色散位移光纤（DSF）和 DF-HNLF 进行比较理论研究，我们发现了光子对产生的光谱范围差异。我们测量了三组不同波长下的重合计数。为了研究拉曼散射的影响，我们计算了不同泵浦功率下的相关性 $g^{(2)}(\tau)$。我们使用受激发射断层扫描来描述跨 S、C 和 L 波段的光子对的产生。我们的研究表明，DF-HNLF是在宽光谱范围（$>\!!100\,text{nm}$）内产生相关光子的理想介质，使其适用于频率多路复用量子通信系统。我们估计光子对的生成效率为 0.05 $\text{mW}^{-2}/\text{pulse}$ 。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Photonics Journal ENGINEERING, ELECTRICAL & ELECTRONIC-OPTICS

CiteScore

4.50

自引率

8.30%

发文量

489

审稿时长

1.4 months

期刊介绍： Breakthroughs in the generation of light and in its control and utilization have given rise to the field of Photonics, a rapidly expanding area of science and technology with major technological and economic impact. Photonics integrates quantum electronics and optics to accelerate progress in the generation of novel photon sources and in their utilization in emerging applications at the micro and nano scales spanning from the far-infrared/THz to the x-ray region of the electromagnetic spectrum. IEEE Photonics Journal is an online-only journal dedicated to the rapid disclosure of top-quality peer-reviewed research at the forefront of all areas of photonics. Contributions addressing issues ranging from fundamental understanding to emerging technologies and applications are within the scope of the Journal. The Journal includes topics in: Photon sources from far infrared to X-rays, Photonics materials and engineered photonic structures, Integrated optics and optoelectronic, Ultrafast, attosecond, high field and short wavelength photonics, Biophotonics, including DNA photonics, Nanophotonics, Magnetophotonics, Fundamentals of light propagation and interaction; nonlinear effects, Optical data storage, Fiber optics and optical communications devices, systems, and technologies, Micro Opto Electro Mechanical Systems (MOEMS), Microwave photonics, Optical Sensors.