Source-independent quantum key distribution without pre-sending entanglement [0.03%]
无需预先发送纠缠的源不可信量子密钥分发
Rong-Zheng Liu,Hua-Lei Yin
Rong-Zheng Liu
Quantum key distribution (QKD) theoretically offers information-theoretic security. The prevailing approach is the prepare-and-measure BB84 protocol, which implements QKD using a conventional laser rather than a single-photon source via the...
Ultra-low-loss 180° adiabatic tapered waveguide bend based on higher-order Bézier curve [0.03%]
基于高阶Bézier曲线的超低损耗180°adiabatic锥形波导弯头
Jia Liu,Xinyu Li,Yangming Ren et al.
Jia Liu et al.
In this paper, we propose a compact 180° adiabatic tapered waveguide bend based on a higher-order Bézier curve. By co-optimizing the inner and outer boundaries of the Bézier profile, the design achieves simultaneous high-efficiency adiab...
Symmetry-broken cavity solitons and collective polarization conformity in Fabry-Pérot Kerr resonators [0.03%]
法布里-珀罗克尔腔中集体极化一致性与对称性破缺的腔孤子
Yohann G Sanvert,Abdullah Alabbadi,Lewis Hill et al.
Yohann G Sanvert et al.
We report on the experimental generation of polarization symmetry-broken cavity solitons (SB-CSs) in a passive, fiber-based, coherently driven, Fabry-Pérot (FP) Kerr resonator. Polarization-resolved measurements reveal the spontaneous tran...
Observation of a 2-µm flat-top beam carrying orbital angular momentum by intracavity incoherent superposition [0.03%]
通过腔内非相干叠加观察到携带轨道角动量的2微米扁顶光束
Kairui Miao,Tongxi Gu,Xiaozhao Song et al.
Kairui Miao et al.
Flat-top beams exhibit symmetrical intensity and steep edge in cross-section with wide application. Especially, orbital angular momentum (OAM) endows it with the potential to achieve uniform angular momentum transfer or phase encoding. In t...
Spin-selective high-numerical-aperture edge detection via detuned quasi-BIC and generalized Kerker effect [0.03%]
基于偏频准束缚态和广义Kerker效应的自旋选择高数值孔径边缘检测
Dongdong Wei,Hang Xu,Rongrui Shi et al.
Dongdong Wei et al.
Optical analog computing has garnered significant attention due to its potential in real-time, high-throughput image processing. However, existing image processing approaches are constrained by the trade-off between numerical aperture and t...
Dual-wavelength cylindrical vector beams in Nd:GdVO4 lasers with identical and orthogonal polarizations [0.03%]
具有相同和正交偏振的Nd：GdVO4激光器中的双波长圆柱矢量光束
Po-Chun Hsu,Ming-Hsun Wu,Yu-Chia Lu et al.
Po-Chun Hsu et al.
This study successfully generated dual-wavelength cylindrical vector beams at 1.06 μm and 1.34 μm in an Nd:GdVO4 laser. By employing resonator design and exploiting the birefringent properties of the laser crystal, both beams exhibited co...
Compact and high-power Ge-on-Si photodetector based on butt-side-hybrid coupling [0.03%]
基于端面混合耦合的紧凑型高功率硅锗异质集成光电探测器
Di Xu,Yuhang Wan,Zheng Zheng
Di Xu
Germanium-on-silicon (Ge-on-Si) photodetectors (PDs) have been widely used in silicon photonics. However, their saturation power is often relatively low. Here, a compact and high-power lateral PIN Ge-on-Si PD featuring a novel, to the best ...
Spatio-spectral coupling in spatio-temporally mode-locked fiber laser [0.03%]
具有空间和时间模锁定的光纤激光器中的空间和光谱耦合现象
Zhijin Xiong,Wei Lin,Yuwen Liang et al.
Zhijin Xiong et al.
We experimentally and numerically reveal a spatio-spectral coupling (SSC) mechanism mediated by spatially dependent gain in the spatio-temporally mode-locked fiber laser. In the experiment, the spectral tuning is observed to be accompanied ...
Direct generation of megawatt-peak-power sub-100-fs vector vortex beams from a Mamyshev fiber oscillator [0.03%]
兆瓦峰值功率皮秒脉冲矢量涡旋光束的直接产生
Shan Wang,Lin Yu,Cunjiang Wei et al.
Shan Wang et al.
We demonstrate a few-mode Yb-doped fiber Mamyshev oscillator that directly generates megawatt-level peak power femtosecond vector vortex beams. Mode selection is achieved via engineered mode- and polarization-dependent intracavity losses, e...
Experimental synthesis of vector-twisted beams with controllable higher-order Poincaré polarization states [0.03%]
实验合成可控高阶庞加莱氏极化态的矢量扭曲光束
Haiyun Wang,Manxi Si,Feng Ding et al.
Haiyun Wang et al.
We propose a protocol for efficient synthesis of vector-twisted beams with higher-order Poincaré polarization states via the random vector-mode decomposition method, where the polarization state and twist phase information are encoded into...