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Featured Articles

Flexible generation of structured terahertz fields via programmable exchange-biased spintronic emitters

0708Structured light, particularly in the terahertz frequency range, holds considerable potential for a diverse range of applications. However, the generation and control of structured terahertz radiation pose major challenges. In this work, we demonstrate a novel programmable spintronic emitter that can flexibly generate a variety of structured terahertz waves. This is achieved through the precise and high-resolution programming of the magnetization pattern on the emitter’s surface, utilizing laser-assisted local field cooling of an exchange-biased ferromagnetic heterostructure. Moreover, we outline a generic design strategy for realizing specific complex structured terahertz fields in the far field. Our device successfully demonstrates the generation of terahertz waves with diverse structured polarization states, including spatially separated circular polarizations, azimuthal or radial polarization states, and a full Poincaré beam. This innovation opens a new avenue for designing and generating structured terahertz radiations, with potential applications in terahertz microscopy, communication, quantum information, and light-matter interactions.

Integrated preparation and manipulation of high-dimensional flying structured photons

0702The hope for a futuristic global quantum internet that provides robust and high-capacity quantum information transfer lies largely on qudits, the fundamental quantum information carriers prepared in high-dimensional superposition states. However, preparing and manipulating N-dimensional flying qudits as well as subsequently establishing their entanglement are still challenging tasks, which require precise and simultaneous maneuver of 2 (N-1) parameters across multiple degrees of freedom. Here, using an integrated approach, we explore the synergy from two degrees of freedom of light, spatial mode and polarization, to generate, encode, and manipulate flying structured photons and their formed qudits in a four-dimensional Hilbert space with high quantum fidelity, intrinsically enabling enhanced noise resilience and higher quantum data rates. The four eigen spin–orbit modes of our qudits possess identical spatial–temporal characteristics in terms of intensity distribution and group velocity, thereby preserving long-haul coherence within the entirety of the quantum data transmission link. Judiciously leveraging the bi-photon entanglement, which is well preserved in the integrated manipulation process, we present versatile spin–orbit cluster states in an extensive dimensional Hilbert space. Such cluster states hold the promise for quantum error correction which can further bolster the channel robustness in long-range quantum communication.

  1. Authors: Shixiong Yin, Emanuele Galiffi and Andrea Alù

  2. Authors: Ruichao Zhu, Jiafu Wang, Tianshuo Qiu, Yajuan Han, Xinmin Fu, Yuzhi Shi, Xingsi Liu, Tonghao Liu, Zhongtao Zhang, Zuntian Chu, Cheng-Wei Qiu and Shaobo Qu

Aims and scope

eLight aims to attract the finest manuscripts, broadly covering all sub-fields of optics, photonics and electromagnetics. In particular, we focus on those emerging topics and cross-disciplinary researches related to optics.

Editors' Quotes

From EiC Prof. Aydogan Ozcan

"We look forward to working with optics and photonics community to make eLight among the first choices to publish the highest quality research results from all around the world, broadly covering all the exciting research and advances in light science and engineering."

From EiC Prof. Cheng-Wei Qiu

"For those who love the science of light, photonics, and optical materials, we wish to make eLight among the first few journal names flashing in your mind when you are about to submit your excellent and proud works. Let us grow and glow together, and with your paramount support, we could make it happen. "

Editor-in-Chief: Dr. Aydogan Ozcan

Dr. AyAydogan Ozcandogan Ozcan received his Ph.D. degree at Stanford University Electrical Engineering Department. After a short post-doctoral fellowship at Stanford University, he was appointed as a research faculty at Harvard Medical School, Wellman Center for Photomedicine in 2006. Dr. Ozcan joined UCLA in 2007 and he is currently the Chancellor’s Professor and the Volgenau Chair for Engineering Innovation at UCLA and an HHMI Professor with the Howard Hughes Medical Institute, leading the Bio- and Nano-Photonics Laboratory at UCLA Electrical Engineering and Bioengineering Departments, and is also the Associate Director of the California NanoSystems Institute (CNSI) at UCLA.

Dr. Ozcan is elected Fellow of the National Academy of Inventors (NAI) and holds >70 issued/granted patents and more than 20 pending patent applications for his inventions in telemedicine, mobile health, nanoscopy, wide-field imaging, lensless imaging, nonlinear optics, fiber optics, and optical coherence tomography. Dr. Ozcan gave more than 100 plenary/keynote talks and 500+ invited talks and is also the author of one book, the co-author of more than 1000 peer-reviewed publications in major scientific journals and conferences. In addition, Dr. Ozcan is the founder and a member of the Board of Directors of Lucendi Inc. and Holomic/Cellmic LLC, which was named a Technology Pioneer by The World Economic Forum in 2015. Mobile diagnostics product lines and related assets of Cellmic were acquired by NOW Diagnostics Inc. in 2018. Dr. Ozcan is also the Founder of Pictor Labs. Ozcan led the fundraising and formation of Pictor Labs - a spin-off from his UCLA lab - which reported the first demonstration of AI-based digital tissue staining and telepathology, where biopsy samples were imaged, virtually stained, and diagnosed, each step performed at different cities in the US.

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Editor-in-Chief: Prof. Cheng-Wei Qiu

仇成伟Prof. Cheng-Wei Qiu received his B.Eng. (USTC) and Ph. D. (NUS) degree in 2003 and 2007, respectively. He was a Postdoctoral Fellow at Physics Department in MIT till the end of 2009. Since December 2009, he joined NUS as an Assistant Professor and was promoted to Associate Professor with tenure in Jan 2017. From 1st Jan 2018, he was promoted to Dean’s Chair Professor in Faculty of Engineering, NUS. He was the recipient of the SUMMA Graduate Fellowship in Advanced Electromagnetics in 2005, IEEE AP-S Graduate Research Award in 2006, URSI Young Scientist Award in 2008, NUS Young Investigator Award in 2011, MIT TR35@Singapore Award in 2012, Young Scientist Award by Singapore National Academy of Science in 2013, Faculty Young Research Award in NUS 2013, SPIE Rising Researcher Award 2018, Young Engineering Research Award 2018 in NUS. Dr. Qiu is a fellow of Optica (formerly OSA), SPIE, and The Electromagnetics Academy. His research is known for the structured light for beam manipulation and nanoparticle manipulation. He has published over 300 peer-reviewed journal papers. He was Highly Cited Researchers 2019 by Web of Science. He has been serving in Associate Editor for various journals such as PhotoniX, Photonics Research, and Editor-in-Chief for eLight. He also serves in Editorial Advisory Board for Laser and Photonics Review, Advanced Optical Materials, and ACS Photonics.

Annual Journal Metrics

Citation Impact 2023
Journal Impact Factor: 27.2
5-year Journal Impact Factor: 27.2
Source Normalized Impact per Paper (SNIP): 7.550
SCImago Journal Rank (SJR): 8.650

Speed 2023
Submission to first editorial decision (median days): 3
Submission to acceptance (median days): 69

Usage 2023
Downloads: 250,126
Altmetric mentions: 775

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