Single-Photon Detectors for Quantum Integrated Photonics by Thu Ha Dao, Francesco Amanti, Greta Andrini, Fabrizio Armani, Fabrizio Barbato, Vittorio Bellani, Vincenzo Bonaiuto, Simone Cammarata, Matteo Campostrini, Samuele Cornia, Fabio De Matteis, Valeria Demontis, Giovanni Di Giuseppe, Sviatoslav Ditalia Tchernij, Simone Donati, Andrea Fontana, Jacopo Forneris, Roberto Francini, Luca Frontini, Gian Carlo Gazzadi, Roberto Gunnella, Ali Emre Kaplan, Cosimo Lacava, Valentino Liberali, Leonardo Martini, Francesco Marzioni, Claudia Menozzi, Elena Nieto Hernández, Elena Pedreschi, Paolo Piergentili, Paolo Prosposito, Valentino Rigato, Carlo Roncolato, Francesco Rossella, Matteo Salvato, Fausto Sargeni, Jafar Shojaii, Franco Spinella, Alberto Stabile, Alessandra Toncelli, Gabriella Trucco, Valerio Vitali

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Integrated photonic programmable random matrix generator with minimal active components by Kevin Zelaya, Mostafa Honari-Latifpour, Mohammad-Ali Miri

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Design and simulation of a multichannel sensing system for liquid refractometry based on integrated photonics by A.G. Zakoyan, G.S. Voronkov, V.S. Lyubopytov, A.K. Sultanov, E.P. Grakhova, R.V. Kutluyarov

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Integrated Photonic Neural Networks for Equalizing Optical Communication Signals: A Review by Luís C. B. Silva, Pablo R. N. Marciano, Maria J. Pontes, Maxwell E. Monteiro, Paulo S. B. André, Marcelo E. V. Segatto

“…Thus, this review focuses on the applications, challenges, and opportunities of implementing integrated photonic neural networks for the scenario of optical signal equalization. …”
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Reconfigurable Integrated Photonic Unitary Neural Networks With Phase Encoding Enabled by In-Situ Training by Shengjie Tang, Cheng Chen, Qi Qin, Xiaoping Liu

“…Photonic neural networks are emerging as promising computing platforms for artificial intelligence (AI). Particularly, integrated photonic unitary neural networks (IPUNNs) are capable of mitigating gradient vanishing/explosion problems when deeper neural networks are constructed. …”
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Topological bound states in the continuum in a non-Hermitian photonic system by Luo Yihao, Sun Xiankai

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An Approach to Reduce Tuning Sensitivity in the PIC-Based Optoelectronic Oscillator by Controlling the Phase Shift in Its Feedback Loop by Vladislav Ivanov, Ivan Stepanov, Grigory Voronkov, Ruslan Kutluyarov, Elizaveta Grakhova

“…This paper presents a novel approach for continuously controlling the output frequency of an optoelectronic oscillator (OEO) based on integrated photonics. This is achieved by tuning an integrated optical delay line within a feedback loop. …”
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Observation of anti-PT-symmetry and higher-order exceptional point PT-symmetry in ternary systems for single-mode operation by Milad Jahangiri, Gholam-Mohammad Parsanasab, Leila Hajshahvaladi

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Efficient optical parametric amplification in the thin film lithium niobate waveguides by Yuanqiang Peng, Shunxing Yang, RuiHuan Wu, Weiyi Hong

“…Potential of TFLN integrated-photonics platforms with efficient ultra-broadband OPA show no boundary.…”
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Continuous tunability of refractive index contrast in LiNbO3 optical waveguides fabricated by high-vacuum vapor-phase proton exchange by Mihnea Raoul Sandu, Alicia Petronela Rambu, Laura Hrostea, Sorin Tascu

“…Abstract The actual techniques allowing the fabrication of waveguides in lithium niobate are not able to satisfy one of the demands of modern integrated photonics namely the well-controlled tunability of index contrast over a large range of values (from high-index contrast to low index contrast). …”
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A novel intelligent photonic design method enabled by metamaterials and k-nearest neighbor by Fan Hangming, Pan Junlin, Wang Yongchen, Yuan Zhe, Cheng Mengfan, Yang Qi, Liu Deming, Deng Lei

“…The application of this method in arbitrary power splitter highlights its appropriateness for the design and optimization within integrated photonics devices.…”
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On-chip power efficient MHz to GHz tunable Brillouin microwave photonic filters by Reena Parihar, Choon Kong Lai, Ziqian Zhang, Duk-Yong Choi, Stephen J. Madden, Benjamin J. Eggleton, Amol Choudhary, Moritz Merklein

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Topological Cavity Chains via Shifted Photonic Crystal Interfaces by Wei Li, Junhui Hu, Hai-Xiao Wang

“…Our work holds promises for designing robust photonic devices, which may find potential applications in future integrated photonics.…”
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A Compact and Fast Resonant Cavity-Based Encoder in Photonic Crystal Platform by Mohammad Soroosh, Faris K. AL-Shammri, Mohammad Javad Maleki, Venkatachalam Rajarajan Balaji, Ehsan Adibnia

“…The proposed design, with a footprint of 114 µm², demonstrates efficient encoding operation at a wavelength of 1550 nm and is highly suitable for integrated photonics applications. A comprehensive comparative analysis revealed that the proposed 4-to-2 encoder exhibits a time response 176 fs faster than previously presented encoders. …”
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Compact inverse designed vertical coupler with bottom reflector for sub-decibel fiber-to-chip coupling on silicon on insulator platform by Shiang-Yu Huang, Stefanie Barz

“…Abstract Inverse design via topology optimization has led to innovations in integrated photonics and offers a promising way for designing high-efficiency on-chip couplers with a minimal footprint. …”
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High-Dimensional Quantum Key Distribution by a Spin-Orbit Microlaser by Yichi Zhang, Haoqi Zhao, Tianwei Wu, Zihe Gao, Li Ge, Liang Feng

“…Practical qudit platforms require robust propagation, outstanding controllability, and extreme compactness, to which integrated photonics provides a promising solution. Here, we achieved, for the first time, microlaser-enabled high-dimensional quantum communication through leveraging spin-orbit photon qudits, where the dynamical generation and manipulation of these multi-degrees-of-freedom complex quantum state are realized by a non-Hermitian-physics-driven integrated microlaser quantum transmitter. …”
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Design of a release-free piezo-optomechanical quantum transducer by Paul Burger, Joey Frey, Johan Kolvik, David Hambraeus, Raphaël Van Laer

“…Beyond quantum science and engineering, this platform and its design principles could also propel low-power acousto-optic systems in integrated photonics.…”
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A wide-spectrum mid-infrared electro-optic intensity modulator employing a two-point coupled lithium niobate racetrack resonator by Hyeon Hwang, Kiyoung Ko, Mohamad Reza Nurrahman, Kiwon Moon, Jung Jin Ju, Sang-Wook Han, Hojoong Jung, Min-Kyo Seo, Hansuek Lee

“…Optical intensity modulators (OIMs) are essential for mid-infrared (mid-IR) photonics, enabling applications such as bond-selective molecular sensing, and free-space communications via atmospheric windows. Integrated photonics offers a compact and cost-effective solution, yet on-chip mid-IR OIMs significantly underperform compared to their near-IR counterparts. …”
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Metacavities by harnessing the linear-crossing metamaterials by Wu Jiaju, Guo Zhiwei, Qi Xin, Wei Qian, He Li, Fang Kai, Sun Yong, Li Yunhui, Chen Yuguang, Jiang Haitao, Chen Hong

“…Our work offers a new avenue for designing optical resonators excited by the point source in integrated photonics, which is very useful for high-efficiency filters, ultrasensitive sensors, and enhancement of light–matter interactions.…”
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Optomechanical Gyroscope Based on Micro-Hemispherical Shell and Optical Ring Resonators by Jamal N. A. Hassan, Wenyi Huang, Maoyuan Wang, Senyu Zhang, Guangjun Wen, Yongjun Huang

“…Overall, the gyroscope design utilizes principles of both mechanical resonators and integrated photonics to address challenges in on-chip light coupling and angular velocity detection for next-generation optomechanical inertial sensors. …”
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