SPDC 中双光子联合光谱振幅的对称和非对称相位调制

IF 1.9 4区物理与天体物理 Q3 OPTICS Journal of the European Optical Society-Rapid Publications Pub Date : 2023-12-11 DOI:10.1051/jeos/2023046

Jinbao Wang

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引用次数: 0

摘要

分析了对称和反对称相位调制下纠缠双光子的产生，得到了自发参数下转换(SPDC)过程中相应的联合谱幅函数(JSAF)。借助Schmidt分解，分析了不同模式的分布概率，提高了纠缠度，从而实现了纠缠度、熵、Schmidt系数和Schmidt数的有效调控。通过仿真，我们发现反对称相位调制可以使谱宽略微变宽，当晶体较短时，对称相位调制分布更有利。

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The Symmetric and Antisymmetric Phase Modulation for the Joint Spectral Amplitude of the Biphotons in SPDC

We analysis the generation of entangled biphotons by symmetric and antisymmetric phase modulation to obtain the corresponding joint spectral amplitude functions(JSAF) during the spontaneous parametric down-conversion(SPDC). With the help of Schmidt decomposition, the distribution probabilities of different modes are analyzed and the degree of entanglement is improved, which in turn leads to the effective regulation of entanglement, entropy, Schmidt coefficient and Schmidt number. Through simulations, we find that the antisymmetric phase modulation can slightly broaden the spectrum width, and the symmetric phase modulation distribution is more advantageous when the crystal is shorter.

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来源期刊

Journal of the European Optical Society-Rapid Publications 物理-光学

CiteScore

2.40

自引率

0.00%

发文量

审稿时长

5 weeks

期刊介绍： Rapid progress in optics and photonics has broadened its application enormously into many branches, including information and communication technology, security, sensing, bio- and medical sciences, healthcare and chemistry. Recent achievements in other sciences have allowed continual discovery of new natural mysteries and formulation of challenging goals for optics that require further development of modern concepts and running fundamental research. The Journal of the European Optical Society – Rapid Publications (JEOS:RP) aims to tackle all of the aforementioned points in the form of prompt, scientific, high-quality communications that report on the latest findings. It presents emerging technologies and outlining strategic goals in optics and photonics. The journal covers both fundamental and applied topics, including but not limited to: Classical and quantum optics Light/matter interaction Optical communication Micro- and nanooptics Nonlinear optical phenomena Optical materials Optical metrology Optical spectroscopy Colour research Nano and metamaterials Modern photonics technology Optical engineering, design and instrumentation Optical applications in bio-physics and medicine Interdisciplinary fields using photonics, such as in energy, climate change and cultural heritage The journal aims to provide readers with recent and important achievements in optics/photonics and, as its name suggests, it strives for the shortest possible publication time.