{"title":"Editorial Interview:Recent Industrial Applications and Outlook of Optoelectronic Technologies for AI/ML Applications","authors":"Young-Kai Chen","doi":"10.1109/JSTQE.2025.3572652","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3572652","url":null,"abstract":"","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 3: AI/ML Integrated Opto-electronics","pages":"1-3"},"PeriodicalIF":4.3,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11023043","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144206061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Wavelength-Selective Reconfigurable Photonic Synapse in a VCSOA With Sub-Nanosecond Bio-Realistic Temporal Dynamics","authors":"Chaotao He;Maorong Zhao;Qiupin Wang;Pu Ou;Ziyi Kang;Yanfei Zheng;Zhengmao Wu;Guangqiong Xia","doi":"10.1109/JSTQE.2025.3575091","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3575091","url":null,"abstract":"By using photonic approaches to emulate the brain’s neural dynamics, neuromorphic computing provides ultra-fast speeds, electromagnetic interference resilience, and wavelength-selective reconfigurability for extending the domain of artificial intelligence. However, as a critical component of neuromorphic computing, photonic synapses face some challenges in replicating bio-realistic temporal dynamics and wavelength-selective reconfigurability at sub-nanosecond operational timescales. Herein, inspired by the gain dynamics of vertical-cavity semiconductor optical amplifier (VCSOA) under optical injection, we propose a scheme to acquire wavelength-selective reconfigurable photonic synapse. By using the Fabry-Pérot (F-P) analysis approach, numerical investigation of the gain dynamics in VCSOA reveals two distinct operational regimes: gain saturation under sub-resonant wavelength injection and gain overshoot under supra-resonant wavelength injection with lower injection power. Dependent on the distinct regimes, we numerically demonstrate that a VCSOA can be reconfigured as a bio-realistic excitatory or an inhibitory synapse by switching between supra-resonant and sub-resonant wavelength injections. Furthermore, capitalizing on the reconfigurable features of the photonic synapse, we successfully simulate four variants of spike-timing-dependent plasticity (STDP) learning rules: asymmetric Hebbian STDP, asymmetric anti-Hebbian STDP, symmetric Hebbian STDP, and symmetric anti-Hebbian STDP. Notably, all bio-realistic temporal dynamics operate at sub-nanosecond timescales, surpassing biological counterparts in speed by over 7 orders of magnitude. By overcoming the limitations of existing photonic synapses in bio-realistic temporal dynamics and wavelength-selective reconfigurability at sub-nanosecond timescales, this work establishes a VCSOA-driven paradigm for ultra-fast spike dynamics processing in photonic neuromorphic computing.","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 4: Adv. in Neurophoton. for Non-Inv. Brain Mon.","pages":"1-8"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144314682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mitchell B. Robinson;Marco Renna;Nikola Otic;Olivia S. Kierul;Ailis Muldoon;Maria Angela Franceschini;Stefan A. Carp
{"title":"Pathlength-Selective, Interferometric Diffuse Correlation Spectroscopy","authors":"Mitchell B. Robinson;Marco Renna;Nikola Otic;Olivia S. Kierul;Ailis Muldoon;Maria Angela Franceschini;Stefan A. Carp","doi":"10.1109/JSTQE.2025.3575719","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3575719","url":null,"abstract":"In this work, we present an enhanced diffuse correlation spectroscopy (DCS) method called pathlength-selective, interferometric DCS (PaLS-iDCS), which uses pathlength-specific coherent gain to improve both the sensitivity to deep tissue hemodynamics and measurement SNR. Through interferometric detection, PaLS-iDCS can provide time-of-flight (ToF) specific blood flow information without the use of expensive time-tagging electronics and low-jitter detectors. The technique is compared to time-domain DCS (TD-DCS), another enhanced DCS method able to resolve photon ToF in tissue, through Monte Carlo simulation, phantom experiments, and human subject measurements. PaLS-iDCS consistently demonstrates improvements in SNR (>2x) for similar measurement conditions (same photon ToF), and the SNR improvements allow for measurements at extended photon ToFs, which have increased sensitivity to deep tissue hemodynamics (∼50% increase). Further, like TD-DCS, PaLS-iDCS allows direct estimation of tissue optical properties from the sampled ToF distribution. This method offers a relatively straightforward way to allow DCS systems to make robust measurements of blood flow with greatly enhanced sensitivity to deep tissue hemodynamics without the need for time-resolved detection, enabling further applications of this non-invasive technology.","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 4: Adv. in Neurophoton. for Non-Inv. Brain Mon.","pages":"1-14"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144299252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhuning Wang;Jiayue Zhou;Qirui Lv;Yulei Zhang;Yaoguang Ma
{"title":"Spectrally Selective Thermal Radiation Management for Effective Temperature Control and Climate Adaptation","authors":"Zhuning Wang;Jiayue Zhou;Qirui Lv;Yulei Zhang;Yaoguang Ma","doi":"10.1109/JSTQE.2025.3575585","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3575585","url":null,"abstract":"The demand for space cooling and heating has surged with the development of technology, posting a global challenge that requires sustainable thermal management solutions. Spectrally selective thermal radiation management stands out as a particularly promising approach due to its zero-energy consumption feature. This review first examines the specific scenarios where thermal demand applies and evaluates the theoretical energy-saving potentials of radiative cooling (RC), solar heating (SH), and dynamic radiative cooling (DRC) technologies. Subsequently we outline the operational principles and recent progress in various innovative research areas. Additionally, we explore the broad prospects of spectrally selective thermal radiation management in addressing urban heat island effects, advancing green energy initiatives, facilitating water desalination, and improving energy effectiveness across diverse applications. This review identifies major challenges and emerging opportunities for future research, offering an in-depth guide to advancing the frontiers of sustainable thermal management technologies.","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 6: Photon. for Climate Chng. Mitigation and Adapt.","pages":"1-16"},"PeriodicalIF":4.3,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144281321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jae-Hyun Kim;Geon-Tae Park;Rira Kang;So-Yeon Ju;Semin Yu;Byunghong Lee;Sun-Kyung Kim
{"title":"Geometric Design for Light Trapping in Bifacial Thin-Film Photovoltaics","authors":"Jae-Hyun Kim;Geon-Tae Park;Rira Kang;So-Yeon Ju;Semin Yu;Byunghong Lee;Sun-Kyung Kim","doi":"10.1109/JSTQE.2025.3564549","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3564549","url":null,"abstract":"Modern photovoltaics (PVs) are increasingly designed to be thinner and more transparent, thus enabling seamless integration into buildings and vehicles in urban environments. However, semitransparent thin-film PVs face inherent challenges in sunlight capture due to the limited volume of absorbing materials and the absence of efficient light-trapping strategies. Herein, we report a geometric design for light trapping in thin-film PVs using a wedge-shaped microprism sheet. This microprism sheet, attached to the planar surface of thin-film PVs, mitigates reflection losses at both external (air-cover) and internal (cover-PV cell) boundaries by leveraging light trapping. The light-trapping effect is quantitatively validated through angle-resolved transmittance measurements. The microprism sheet achieves near-unity external transmittance at all incident angles and redirects 81% of the internally reflected light back to the PV cell over typical solar incidence angles. Outdoor experiments conducted with semitransparent thin-film perovskite (PVSK) PVs demonstrate energy generation enhancements of >17% during daytime in vertically oriented bifacial configurations. These improvements are ascribed to the effective capture of direct sunlight on both the front and rear surfaces of the PVSK PVs. The geometric design of microprism sheets is facile yet effective for broadband light manipulation, offering a versatile solution for advancing solar energy devices and radiative coolers.","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 6: Photon. for Climate Chng. Mitigation and Adapt.","pages":"1-7"},"PeriodicalIF":4.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144108339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Na Li;Na Liu;Yutong Ye;Haoxin Shi;Jia Shi;Guoshuai Luo;Jun Guo;Yi Liu;Hongli Chen
{"title":"Photobiomodulation Ameliorates Neuronal Damage in an Amyloid-Beta Induced Rat Model","authors":"Na Li;Na Liu;Yutong Ye;Haoxin Shi;Jia Shi;Guoshuai Luo;Jun Guo;Yi Liu;Hongli Chen","doi":"10.1109/JSTQE.2025.3564366","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3564366","url":null,"abstract":"Photobiomodulation (PBM), as a novel noninvasive therapy, has been extensively employed in neurodegenerative disorder research. However, its mechanism of action in Alzheimer's disease (AD) management remains unclear. In this study, a rat model of AD was constructed by administering amyloid-beta (Aβ) intracerebrally, and the influence of 808 nm phototherapy-mediated PBM on AD was explored. The findings indicated that PBM performed a neuroprotective function by reducing neuronal damage in AD and ameliorating cognitive function, mediated by the suppression of Aβ induced neuroinflammation and neuronal apoptosis. This investigation underscores the critical role of PBM in ameliorating Aβ-induced neuronal damage. It provides a theoretical basis for the advancement of near-infrared light application in neurodegenerative disorders.","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 4: Adv. in Neurophoton. for Non-Inv. Brain Mon.","pages":"1-9"},"PeriodicalIF":4.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Feedback-Enhanced Color Purity Film for Improved Color Saturation and Conversion Efficiency in Full-Color Micro-LED Displays","authors":"Zhi Ting Ye;Po Hsiang Tsai;Chia Hui Chen","doi":"10.1109/JSTQE.2025.3564125","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3564125","url":null,"abstract":"Achieving full-color micro-LED display technology typically involves arranging red, green, and blue (RGB) chips into pixels or combining blue chips with quantum dots and other color-conversion materials. Although InP quantum dots offer a cadmium-free solution, their broader spectral full width at half maximum (FWHM) limits color saturation in displays. This study proposes a feedback-enhanced color purity film (FE-CPF) to improve color saturation and conversion efficiency. The proposed FE-CPF optimizes the FWHM of the light emitted after the blue micro-LED light source passes through the conversion layers made from InP green and red quantum dots, achieving high color purity while enhancing the color conversion efficiency. The experimental results indicate that the micro-LED blue light source emits at a wavelength of 447.5 nm. With the application of FE-CPF to the InP quantum dot color conversion layer, the color purity of green quantum dots increased from 76.8% to 95.8%, and that of red quantum dots increased from 85.4% to 99.2%. The conversion efficiencies of green and red light were 1.45 and 1.51 times higher, respectively. The NTSC coverage increased to 145.1%. Future applications of this approach to micro-LED displays promise advanced full-color rendering with high color saturation and energy efficiency.","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 5: Quantum Materials and Quantum Devices","pages":"1-8"},"PeriodicalIF":4.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Enhancing Squeezing to Strengthen Entanglement for High-Fidelity Quantum Teleportation","authors":"Lokesh Sharma;Priya Mudgal;Sourodipto Das;Debabrata Sikdar","doi":"10.1109/JSTQE.2025.3564054","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3564054","url":null,"abstract":"Quantum teleportation, a cornerstone of quantum communication and quantum computing, relies on strong entanglement to transfer quantum information with high fidelity. However, the efficiency and accuracy of teleportation are often constrained by the degree of squeezing in the entangled states. This article, presents a method to enhance squeezing to strengthen entanglement, finally it improves the fidelity of quantum teleportation. The proposed method applies multi-mode squeezing enhancement technique and combine it with entanglement purification, resulting in much lower quadrature variance and an optimized quantum state. By improving the squeezing process, in this article it is shown that stronger entanglement leads to more reliable and stable quantum state transfer. This proposed method is offering a potential route in the direction of high-fidelity quantum communication, scalable quantum networks, and secure quantum applications.","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 5: Quantum Materials and Quantum Devices","pages":"1-8"},"PeriodicalIF":4.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143918752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yongan Gong;Ruixuan Lin;Murat Can Mutlu;Lukas Lorentz;Usman Jawed Shaikh;Joscha D Graeve;Niloufar Badkoubeh;Roy Rongyue Zeng;Franziska Klein;Michael Lührs;Klaus Mathiak;Jack Jiaqi Zhang;David MA Mehler
{"title":"The Use of Functional Near-Infrared Spectroscopy (fNIRS) for Monitoring Brain Function, Predicting Outcomes, and Evaluating Rehabilitative Interventional Responses in Poststroke Patients With Upper Limb Hemiplegia: A Systematic Review","authors":"Yongan Gong;Ruixuan Lin;Murat Can Mutlu;Lukas Lorentz;Usman Jawed Shaikh;Joscha D Graeve;Niloufar Badkoubeh;Roy Rongyue Zeng;Franziska Klein;Michael Lührs;Klaus Mathiak;Jack Jiaqi Zhang;David MA Mehler","doi":"10.1109/JSTQE.2025.3563153","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3563153","url":null,"abstract":"Functional near-infrared spectroscopy (fNIRS) has been increasingly applied in poststroke research. The accumulated evidence in this area warrants a comprehensive review systematically investigating the utility of fNIRS in poststroke rehabilitation, specifically focusing on upper limb motor recovery. The target of this systematic review was the use of fNIRS for monitoring brain function, predicting outcomes, and evaluating rehabilitative interventional responses in poststroke patients with upper limb hemiplegia. A literature search was carried out using PubMed, Web of Science, EMBASE, Medline, and IEEE Explore, to identify studies that applied fNIRS in stroke survivors. A total of 52 studies were included, with 23 cross-sectional studies, 8 longitudinal studies and 21 interventional studies. The majority of the included fNIRS studies displayed a bilateral activation pattern in patients after stroke during paretic upper limb movement. The change in hemispheric laterality, measured by oxygenated hemoglobin concentration changes (Δ[HbO]) levels in different corticomotor regions, has been found to be correlated with motor recovery following a stroke. Various rehabilitation interventions, such as exercise-based, stimulation-based, and neurofeedback techniques, improved recovery outcomes by increasing Δ[HbO] levels in the ipsilesional sensorimotor and secondary motor areas. These interventions also recruited different brain regions connected to the ipsilesional sensorimotor area, thereby strengthening their connectivity. In conclusion, outcomes derived from fNIRS demonstrate promise in monitoring brain function, predicting outcomes, and evaluating responses to interventions in patients after stroke. Future fNIRS research can be enhanced by adhering to best practice checklists, utilizing the latest experimental setup and analysis protocols, and recruiting large sample sizes.","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 4: Adv. in Neurophoton. for Non-Inv. Brain Mon.","pages":"1-10"},"PeriodicalIF":4.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lo Patrick Guo-Qiang;YooJin Ban;Marco Forentino;Di Liang;M. Ashkan Seyedi
{"title":"Editorial Introduction to JSTQE Special Issue on “Integrated Opto-Electronics in AI/ML”","authors":"Lo Patrick Guo-Qiang;YooJin Ban;Marco Forentino;Di Liang;M. Ashkan Seyedi","doi":"10.1109/JSTQE.2025.3558676","DOIUrl":"https://doi.org/10.1109/JSTQE.2025.3558676","url":null,"abstract":"","PeriodicalId":13094,"journal":{"name":"IEEE Journal of Selected Topics in Quantum Electronics","volume":"31 3: AI/ML Integrated Opto-electronics","pages":"1-4"},"PeriodicalIF":4.3,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10970243","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}