Using a two-color time-resolved Faraday rotation measurement technique, researchers at the University of California, Santa Barbara, have observed the transfer of electron spin information between molecularly linked CdSe quantum dots at room temperature. The work, which they reported July 31 online on Sciencexpress, suggests that such structures may be suitable for the fabrication of spintronic devices for applications such as quantum information processing. To produce the quantum-dot assemblies, Min Ouyang and David D. Awschalom immersed functionalized fused silica substrates in a solution...Read full articleRelated content from Photonics MediaArticlesIntegrated Photonic Quantum Sensing Takes Aim at Climate ResearchA NASA-funded collaboration will focus on advancing quantum sensing technology to enable new understanding of Earth and the effects of climate change. Led by the University of Texas at Austin (UT),...Photonics.com 3/28/2023Diffractive Optical Network Enables Snapshot Multispectral ImagingUCLA researchers led by Aydogan Ozcan and Mona Jarrahi have developed a multispectral imaging technology capable of turning a monochrome sensor into a multispectral one. Rather than the traditional...Photonics Spectra June 2023 IssueDiffractive Optical Network Supports Quantitative Phase ImagingA team of researchers led by Aydogan Ozcan from the Electrical and Computer Engineering Department and California Nanosystems Institute at UCLA has developed a diffractive optical network to replace...Photonics Spectra August 2022 IssueSPIE Elects de Groot into its Presidential ChainPeter de Groot, chief scientist at Zygo Corp., was elected to serve as the 2023 vice president of SPIE. The election brings de Groot into the SPIE presidential chain. He will serve as president-elect...BioPhotonics Nov/Dec 2022 IssueWebinarsKEYNOTE: FLIM in Surgical OncologyMarcu reviews the development of clinically compatible fluorescence lifetime imaging (FLIM) technology and applications in surgical oncology. Emphasis is placed on the integration of FLIM in surgical...Photonics.com 10/26/2022How to Choose or Custom-Design the Right Machine Vision Lens for Your ApplicationAlthough commonly overlooked, a lens is the first component in the composition of a vision system. Using a low-quality lens will result in poor image quality, even if the lens is paired with hardware...Photonics.com 7/21/2021Next-Generation Fabrication for Low-Loss Quantum Photonic DevicesNext-generation quantum photonic devices routinely operate in the single-photon regime. As a result, these devices require novel device fabrication approaches to reduce losses as much as possible....Photonics.com 4/12/2022Multiscale Modeling and Optimization in Photonic DevicesTwo challenging problems of photonic device modeling are addressed in this talk: multiscale modeling and optimization. When it comes to modeling an optically large system with subwavelength features,...Photonics.com 1/10/2022Photonics Dictionary Termsoptical diodeSee Faraday rotation; optoisolator.Photonics DictionaryFaraday rotationThe effect discovered by Faraday in 1845 whereby nonoptically active materials or substances become capable of rotating the polarization plane of polarized radiation (light) passed through them when...Photonics Dictionarybulk nonreciprocal deviceA device that functions throughout the continuous radiation of a linearly polarized plane wave, and whose nonreciprocity arises from the Faraday rotation of linearly polarized radiation.Photonics Dictionarymagneto-optic shutterA type of high-speed photographic shutter that uses Faraday rotation to produce exposure times as fast as 1 microsecond. It consists of two polarizers, set with their planes of polarization at right...Photonics DictionaryMediaFaraday RotationVideo definition of Faraday Rotation presented by Eric Zhang, Princeton University.Photonics.com 11/14/2014Connie Chang-Hasnain, University of California, BerkeleyConnie Chang-Hasnain, OSA Fellow, University of California, Berkeley, USA, muses over the simplistic beauty of optics and how it inspired her work in semiconductor lasers.Photonics.com 6/15/2016Crystal Light - LIGHT MATTERS 08.12.2015A new generation of quantum dot light emitters aims to outshine the rest. See where lighting and display technology might be headed – this week on Light Matters!Photonics.com 8/12/2015Photonic Silicon & 3-D Printable Optics - LIGHT MATTERS 04.03.2013-Shrinking OCT -Photonic Logic Gate -Intravascular OCT This week on Light matters: bulk silicon emits visible light, 3-D printable optics are open sourced, a European project aims to shrink light...Photonics.com 4/3/2013Photonics Buyers' Guide CategoriesQuantum DotsA quantum dot is a nanoscale semiconductor structure, typically composed of materials like cadmium selenide or indium arsenide, that exhibits unique quantum mechanical properties. These properties...