/ en-us �鶹��Ժ internet news portal provides the latest news on science including: �鶹��Ժics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. Blue phosphorescent OLEDs can now last as long as the green phosphorescent OLEDs already in devices, University of Michigan researchers have demonstrated, paving the way for further improving the energy efficiency of OLED screens. /news/2025-05-enables-blue-oleds-green-efficiency.html Optics & Photonics Fri, 23 May 2025 13:15:03 EDT news667224901 Imagine a medical scanner that works faster and produces clearer images, or a radiation detector that pinpoints tiny traces of radioactive material with unprecedented accuracy. These futuristic possibilities are a step closer to reality thanks to new research by scientists at the Łukasiewicz Research Network—PORT Polish Center for Technology Development. /news/2025-05-thin-bulk-brighter-faster-scanning.html Nanophysics Nanomaterials Tue, 20 May 2025 11:30:22 EDT news666959418 Superradiant Smith-Purcell radiation (S-SPR) is a kind of free electron radiation with a train of free electron bunches passing over a periodic grating. In theory, the ultra-narrow spectral linewidth of S-SPR could be realized, which would be greatly beneficial to various applications such as imaging, sensing and communication. /news/2025-04-compact-superradiant-smith-purcell-device.html Optics & Photonics Mon, 21 Apr 2025 15:46:03 EDT news664469161 Integrated photonic circuits operating at room temperature combined with optical nonlinear effects could revolutionize both classical and quantum signal processing. Scientists from the Faculty of �鶹��Ժics at the University of Warsaw, in collaboration with other institutions from Poland as well as Italy, Iceland, and Australia, have demonstrated the creation of perovskite crystals with predefined shapes that can serve in nonlinear photonics as waveguides, couplers, splitters, and modulators. /news/2024-08-scientists-perovskite-waveguides-edge-lasing.html Optics & Photonics Thu, 22 Aug 2024 11:54:35 EDT news643546472 A new study in Nature �鶹��Ժics demonstrates a novel method for generating quantum entanglement using a quantum dot, which violates the Bell inequality. This method uses ultra-low power levels and could pave the way for scalable and efficient quantum technologies. /news/2024-07-quantum-dot-photon-emitters-violate.html Optics & Photonics Quantum �鶹��Ժics Tue, 09 Jul 2024 08:00:01 EDT news639672763 Scientists have made a breakthrough in significantly improving the sharpness of X-ray imaging and potentially boosting the speeds at which X-ray scans can be processed. This lays the groundwork for both better medical imaging and faster security clearance. /news/2024-05-golden-layer-sharper-imaging-faster.html Nanophysics Nanomaterials Thu, 16 May 2024 04:00:01 EDT news634980361 Self-assembled semiconductor quantum dots (QDs) represent a three-dimensional confined nanostructure with discrete energy levels, which are similar to atoms. They are capable of producing highly efficient and indistinguishable single photons on demand and are important for exploring fundamental quantum physics and various applications in quantum information technologies. Leveraging traditional semiconductor processes, this material system also offers a natural integration-compatible and scalable platform. /news/2024-04-reimagining-quantum-dot-photon-sources.html Optics & Photonics Quantum �鶹��Ժics Wed, 03 Apr 2024 11:09:00 EDT news631361330 Exploring cavity quantum electrodynamics (cQED) is pivotal for advancing quantum technology and unraveling the fundamental intricacies of light-matter interactions. A prevalent strategy involves integrating a single quantum emitter into photonic microcavities boasting high-quality (Q) factors or small mode volumes. The strength of the coupling in cQED is often assessed using the Purcell factor, a vital parameter. /news/2024-04-photon-emitter-deterministically-coupled-topological.html Optics & Photonics Quantum �鶹��Ժics Tue, 02 Apr 2024 14:07:03 EDT news631285622 Rice University engineers have demonstrated a way to control the optical properties of atomic imperfections in silicon material known as T centers, paving the way toward leveraging these point defects for building quantum nodes for large-scale quantum networks. /news/2024-03-advancing-quantum-networks-largest-photon.html Optics & Photonics Quantum �鶹��Ժics Thu, 28 Mar 2024 11:20:48 EDT news630843645 As we transition to a new era in computing, there is a need for new devices that integrate electronic and photonic functionalities at the nanoscale while enhancing the interaction between photons and electrons. In an important step toward fulfilling this need, researchers have developed a new III-V semiconductor nanocavity that confines light at levels below the so-called diffraction limit. /news/2024-01-wavelength-confinement-indium-phosphide-nanocavity.html Nanophysics Nanomaterials Wed, 24 Jan 2024 12:11:15 EST news625320671 Researchers around the world are working on a network which could connect quantum computers with one another over long distances. Andreas Reiserer, Professor of Quantum Networks at the Technical University of Munich (TUM), explains the challenges which have to be mastered and how atoms captured in crystals can help. /news/2023-11-qa-professor-discusses-approaches-quantum.html Quantum �鶹��Ժics Fri, 17 Nov 2023 12:46:39 EST news619447593 Researchers at MPQ in Garching, together with a team from TU Munich, have excited erbium atoms embedded in crystalline silicon such that they emit single photons. Their special properties can form the basis for the development of extended networks that link quantum systems with each other, all the way to a future quantum internet. /news/2023-06-path-quantum-network-erbium-dopants.html Optics & Photonics Quantum �鶹��Ժics Wed, 21 Jun 2023 10:33:45 EDT news606562421 As buzz grows ever louder over the future of quantum, researchers everywhere are working overtime to discover how best to unlock the promise of super-positioned, entangled, tunneling or otherwise ready-for-primetime quantum particles, the ability of which to occur in two states at once could vastly expand power and efficiency in many applications. /news/2023-01-lab-method-on-chip-generation-photon.html Optics & Photonics Quantum �鶹��Ժics Tue, 17 Jan 2023 18:12:05 EST news593201522 The way electrons interact with photons of light is a vital part of many modern technologies, from lasers to solar panels to LEDs. But the interaction is inherently weak because of a major mismatch in scale: the wavelength of visible light is about 1,000 times larger than an electron, so the way the two things affect each other is limited by that disparity. /news/2023-01-electron-triggered-emissions-quantum-based-communications.html Optics & Photonics Wed, 04 Jan 2023 11:09:18 EST news592052954 In a new publication from Opto-Electronic Advances, researchers from South China University of Technology, Guangzhou, China, discuss silicon cuboid nanoantenna with simultaneous large Purcell factor for electric dipole, magnetic dipole and electric quadrupole emission. /news/2022-03-silicon-cuboid-nanoantenna.html Nanomaterials Mon, 21 Mar 2022 13:32:10 EDT news567088327 Researchers have discovered the genetic basis for a quirk of the animal kingdom—how ant queens produce broods that are entirely male or female. /news/2021-12-queen-genes-sex-entire-ant.html Plants & Animals Ecology Tue, 14 Dec 2021 05:56:51 EST news558683804 Researchers at the National Institute of Standards and Technology (NIST) and collaborators have devised and tested a new, highly sensitive method of detecting and counting defects in transistors—a matter of urgent concern to the semiconductor industry as it develops new materials for next-generation devices. These defects limit transistor and circuit performance and can affect product reliability. /news/2021-10-team-sensitive-transistor-defects.html Quantum �鶹��Ժics Thu, 07 Oct 2021 16:04:06 EDT news552841433 The first quantum revolution brought about semiconductor electronics, the laser and finally the internet. The coming, second quantum revolution promises spy-proof communication, extremely precise quantum sensors and quantum computers for previously unsolvable computing tasks. But this revolution is still in its infancy. A central research object is the interface between local quantum devices and light quanta that enable the remote transmission of highly sensitive quantum information. The Otto-Hahn group "Quantum Networks" at the Max-Planck-Institute of Quantum Optics in Garching is researching such a "quantum modem". The team has now achieved a first breakthrough in a relatively simple but highly efficient technology that can be integrated into existing fiber optic networks. The work is published this week in �鶹��Ժical Review X. /news/2020-11-physicists-efficient-modem-future-quantum.html Quantum �鶹��Ժics Thu, 05 Nov 2020 10:19:56 EST news523793993 Researchers at CEA/CNRS/Université Paris Saclay, University College London and ETH Zurich have recently devised a new method to control the temperature of a spin ensemble by increasing electron spin polarization above its thermal equilibrium value. Their research, featured in Nature �鶹��Ժics, builds on a study they conducted back in 2016. /news/2020-05-technique-radiative-cooling-ensembles.html General �鶹��Ժics Quantum �鶹��Ժics Wed, 13 May 2020 10:11:29 EDT news508583484 Quantum emitters can be integrated in monolithic nanoscale plasmonic circuitry via low-loss plasmonic configurations to confine light well below the diffraction limit. In integrated quantum plasmonics, waveguides based on surface plasmon polariton (SPP) modes that propagate electromagnetic waves along metal-dielectric or metal-air interfaces are superior to dielectric-based (and therefore diffraction-limited) photonic waveguides. The observation is in respect to the available Purcell enhancement from embedded quantum emitters and the ongoing trend toward on-chip integration and miniaturization to realize optical signal processing and integrated circuits. Different metal-dielectric configurations have been developed for strong light-matter interactions at the scale of the single photon to support the propagation of plasmonic modes confined beyond the diffraction limit. The property can enable unique prospects to design highly integrated photonic-signal processing systems, sensors and optical imaging techniques with nanoscale resolution. /news/2018-10-on-chip-nanodiamonds-embedded-plasmonic-waveguides.html Nanophysics Fri, 05 Oct 2018 09:30:03 EDT news457944629 A research group from ITMO University has developed a controlled light source based on nanodiamond. Experiments have shown that the diamond shell doubles the emission speed light sources and helps to control them without any additional nano- and microstructures. This was achieved due to artificially created defects in a diamond crystal lattice. Obtained results are important for the development of quantum computers and optical networks. The work is published in the Nanoscale. /news/2018-05-nanodiamond-source.html Nanophysics Wed, 02 May 2018 10:08:53 EDT news444474523 Future ultrathin solar cells and light sources could have their surfaces covered by tiny trenches, after A*STAR researchers found such structures enhance efficiency by four orders of magnitude. /news/2017-09-key-ultrathin-high-efficiency-sensors-solar.html Nanomaterials Fri, 15 Sep 2017 07:30:03 EDT news424678018 Researchers have developed a new type of light-enhancing optical cavity that is only 200 nanometers tall and 100 nanometers across. Their new nanoscale system represents a step toward brighter single-photon sources, which could help propel quantum-based encryption and a truly secure and future-proofed network. /news/2016-12-ultra-small-nanocavity-advances-technology-quantum-based.html Optics & Photonics Wed, 21 Dec 2016 11:47:41 EST news401543252 A spider looking to immigrate to a different environment is three to four times more likely to survive if it goes by itself, as opposed to as part of a group. /news/2016-10-loner-spiders-prevail.html Plants & Animals Tue, 04 Oct 2016 07:42:59 EDT news394785770 Carbon nanotubes can be produced with a variety of shapes and properties and are therefore of much interest for widespread applications in fields as diverse as electronics, photonics, nanomechanics, and quantum optics. Hence it is important to have a tool at hand that allows to determine these properties in a quick and precise way. Raman spectroscopy is particularly sensitive for the chemical structure that gives rise to these properties. However, the signals are intrinsically weak and call for enhancement techniques. Now, a team of researchers of the Laser Spectroscopy Division of Prof. Theodor W. Hänsch (Director at the Max Planck Institute of Quantum Optics and Chair of Experimental �鶹��Ժics at the Ludwig-Maximilians-Universität, Munich) has developed a technique, where an optical microcavity is used to enhance Raman scattering signals, and utilized it for molecular diagnostics by combined Raman and absorption imaging. In contrast to other techniques, the new approach only relies on increased vacuum fluctuations of the electromagnetic field inside a cavity, which enables significant enhancement without undesired background, and thereby renders the technique a promising tool for molecular imaging. /news/2016-07-boost-molecular-microscopy.html Nanomaterials Tue, 12 Jul 2016 09:02:53 EDT news387532828 Tiny units of matter and chemistry that they are, atoms constitute the entire universe. Some rare atoms can store quantum information, an important phenomenon for scientists in their ongoing quest for a quantum Internet. /news/2016-04-rare-earth-atoms-route-combined.html Optics & Photonics Mon, 25 Apr 2016 11:00:20 EDT news380795905 A team of scientists has found that a species of ant that clusters together to form rafts to survive floods exhibits memory and repeatedly occupies the same position during raft formation, according to a just published paper. /news/2016-04-raft-building-ants-memory-repeatedly-occupy.html Plants & Animals Mon, 18 Apr 2016 15:44:43 EDT news380213074 In what may provide a potential path to processing information in a quantum computer, researchers have switched an intrinsic property of electrons from an excited state to a relaxed state on demand using a device that served as a microwave "tuning fork." /news/2016-02-quantum-scientists-electrons-microwaves.html Quantum �鶹��Ժics Mon, 15 Feb 2016 11:00:16 EST news374751924 Silicon, a semiconducting material, reveals new talents when reduced to nanoscopic dimensions. A joint team at the HZB Institute of Nanoarchitectures for Energy Conversion and the Max Planck Institute for the Science of Light (MPL) has demonstrated this. Silicon nanocones generate 200 times as much infrared luminescence as comparably sized nanocolumns when excited by visible light. Modelling and experimental results show that due to their geometry, cones are able to sustain what is referred to as whispering gallery modes at infrared wavelengths which can intensify the silicon luminescence. New applications are conceivable, including silicon-based nanolasers. /news/2015-11-gallery-modes-silicon-nanocones-luminescence.html Nanophysics Mon, 30 Nov 2015 10:14:13 EST news368100851 Duke University researchers have made fluorescent molecules emit photons of light 1,000 times faster than normal—setting a speed record and making an important step toward realizing superfast light emitting diodes (LEDs) and quantum cryptography. /news/2014-10-revving-fluorescence-superfast-molecular.html Optics & Photonics Sun, 12 Oct 2014 13:00:03 EDT news332308600