Today's Tech News: Notable or Not?

https://phys.org/news/2026-04-momentum-photonic-states-bulk-silicon.html "can't build all-silicon lasers/ efficient LEDs due to silicon's indirect band gap; for electron in silicon energy level drop/ emit light needs momentum change, but photons carry almost 0 momentum, overcome decorating bulk silicon with ultrasmall copper particles/ confining light to <2 nm space increasing momentum distribution until matches that required by silicon’s electrons, converting silicon into direct band gap material allowing 100,000X increased light emission intensity without needing phonons"

https://techxplore.com/news/2026-04-silicon-photonics-gained-powerful-ally.html 'silicon excellent for routing light/ poor at modulating it, overcome: lithium niobate allows for ultra-fast, low-loss switching and modulation that silicon cannot achieve alone... Tbps data rates on single chip... significantly less voltage, heat, power consumption... scalable: CMOS manufacturing compatible... photonic paths deeper within the server rack support massive LLM/ quantum computing interface computational loads without latency/ energy penalties of electrical paths"

https://phys.org/news/2026-03-silicon-quantum-logical.html "applying [[4,2,2]] quantum error-detecting code to phosphorus atoms' spins makes fault-tolerant... successful with: difficult T-gate which is final key to perform any complex quantum algorithm, Variational Quantum Eigensolver algorithm calculating water molecule's ground-state energy... other platforms (like superconducting qubits) have reached similar milestones, but silicon is scalable: quantum computers could eventually be mass-produced using existing semiconductor fabrication plants"

https://www.eurekalert.org/news-releases/1119045 "III-V photonic crystal/ silicon-on-insulator wafer monolithic integration, using selective lateral heteroepitaxy... low-threshold telecom band lasers not requiring fragile suspended structures for light confinement... strong optical confinement/ mechanical robustness... positioned vertical indium gallium arsenide on indium phosphide quantum wells aligning with laser's maximum optical field... avoids etched air hole damage boosting pumping efficiency, only single growth step... edge-/ surface-emitting lasers"

https://www.eurekalert.org/news-releases/1118417 "overcomes extreme weakness of this effect in non-engineered materials... 100X stronger response combining magnetic/ dielectric components at nanoscale... allows electric fields to directly drive magnetic responses in nonreciprocal way... nonreciprocal optical devices (like isolators with light travel in 1 direction) not needing bulky external magnets. compatible with large-area nanofabrication, making scalable for next-generation photonic chips and advanced optical communication systems"

https://phys.org/news/2026-02-heavier-hydrogen-silicon-centers-brighter.html "T center silicon defects emit/ interact with photons at telecommunications wavelengths... with ordinary hydrogen atoms energy leaks as heat, but deuterium 2x heavier so vibrates at much lower frequency preventing leaking as heat, forcing light release... T centers became significantly brighter/ excited-state lifetime extended >5X... silicon-based qubits then approach near-perfect quantum efficiency... scalable, integrable into existing manufacturing... quantum internet: same wavelengths used in fiber-optic cables" Related: A robust new telecom qubit in silicon https://www.eurekalert.org/news-releases/1117804

https://phys.org/news/2025-12-silicon-atom-processor-links-qubits.html "Silicon Quantum Computing's 14|15 platform scales quantum capacity without fidelity loss... precision-placed (1 with 4 phosphorus atoms, 1 with 5, linked by electron exchange) within purified silicon-28... allows for non-local entanglement across different registers, with entanglement preserved for up to 8 nuclear spins... more compatible with existing manufacturing techniques than competing superconducting/ ion-trap designs... future: optimizing control pulses, further increasing qubit quantity"

https://www.eurekalert.org/news-releases/1110614 "sensitivity signal loss trade-off solved, moving away from using boron/ phosphorus... bombard silicon waveguide with germanium ions, creating controlled defects, without having to add free carriers that degrade optical signals.... high sensitivity in both O-band (1,310 nm) and C-band (1,550 nm), ultra-low absorption ensuring strong primary data signal, minimal electrical noise when no light present, low bias voltage reducing power consumption... programmable photonic networks, medical diagnostics, lab-on-chip"

https://techxplore.com/news/2025-10-scientists-world-chip-combines-2d.html "only simple chips could be constructed with 2D materials like graphene, and wasn't easy connecting to traditional processors, overcome with full-featured 2D silicon-based hybrid flash memory chip enabled by ATOM2CHIP technology... grows memory material only a few atoms thick directly onto a standard silicon chip... new type of packaging to protect fragile 2D materials from stress, heat and static electricity... tested running at 5 MHz... faster, handles complex operations"

https://phys.org/news/2025-09-silicon-nanowires-macroscopic-networks-advanced.html "bundled nanowire alignment/ density control significantly increases contact surface between individual nanowires... suspend nanowires in water, then slowly filter liquid via vacuum filtration, causes order, then linking forming paper-like networks... each bundle of around 15 individual self-assembled nanowires with 0.4 nm separation between them... large-scale silicon nanowire production... batteries, sensors, faster electronics, advanced functional materials, liquid crystal devices, photonic fibers, semiconducting textiles"  

https://www.eurekalert.org/news-releases/1097522 "convolution AI pattern detection in images, video, text... near 0 energy use... 98% accurate classifying handwritten digits, comparable to electronic chips... 2 sets of miniature Fresnel lenses fabricated using current chip manufacturing etched directly onto chip... machine learning data converted into laser light on chip, light passes through Fresnel lenses, which carry out convolution, result converted back to digital to complete AI task... wavelength multiplexing using lasers of different colors... optical AI computing" Related: Sustainable generative AI: UCLA develops novel light-based system https://www.eurekalert.org/news-releases/1100022 New method helps AI reason like humans without extra training data https://techxplore.com/news/2026-01-ai-smarter.html Reasoning: A smarter way for AI to understand text and images https://techxplore.com/news/2026-02-smarter-ai-text-images.html

https://www.eurekalert.org/news-releases/1091707 "overcoming optical interconnect chips' bandwidth limits enables non-volatile intelligent programmable  optical transceiver chips... low crosstalk, lower-power connections, smaller footprint... integration onto silicon PN junctions uses silicon photonics back-end-compatible process... 100 Gbps On-Off Keying modulation/ detection per micro-ring, global temperature control... high-density, low-power optical interconnect chips... data center interconnects, high-speed communication networks"

https://www.eurekalert.org/news-releases/1090331 "symmetrical structure of silicon molecules fine-tuned creating/ suppressing destructive interference, turning conductivity on/ off.. precise control over how atoms are arranged/ way electrons move through silicon structures... molecular symmetry in silicon leads to interference effects that control how electrons move through it, and we can switch that interference on or off by controlling how electrodes align with our molecule... molecular-scale switches, thermoelectric devices, quantum computing components"

https://www.eurekalert.org/news-releases/1087268 "scalable, −46 ppm/°C temperature coefficient wide thermal range, operates at 7–15 GHz (above 6 GHz), insertion loss as low as 1.47 dB, 3-dB bandwidths up to 373 MHz, high signal fidelity, wide bandwidth balances speed/ coverage, k² ~ 8.9% electromechanical coupling... filtering too bulky for mobile, suffers at high frequencies. fragile. overcome using 128°Y-cut lithium niobate... 6G smartphones, routers, aerospace, autonomous systems, sensors, AI-powered applications, immersive extended reality, hyper-connected IoT"

https://www.eurekalert.org/news-releases/1084991 "semiconductors typically rigid but when composed of silicone can be flexible... Si—O—Si: 140° bond angle in ground (non-conducting) state, stretches to 150° bond angle in excited (conducting) state... longer chain length makes easier for electrons to travel longer distances, reducing energy needed to absorb light/ then emit it at lower energies... can control copolymer chain length which controls light emission: longer gives silicone red tint, shorter gives blue tint... soft/ flexible electronics/ PVs, screens, sensors"

https://tribune.com.pk/story/2546369/equal1-launches-first-silicon-quantum-computer-for-standard-data-centres "Equal1's Bell-1, 200 kg, draws 1600 watts... manufactured using conventional semiconductor processes integrating quantum, classical (Arm CPUs), and AI (NPUs) components into single 6-silicon spin qubit chip... closed-cycle 0.3°K-cooling unit without liquid helium/ bulky dilution refrigerators... make quantum computing accessible, scalable, practical, available now... users can swap in new chips as UnityQ platform evolves... industry-leading silicon qubit fidelity and gate speeds"

https://phys.org/news/2025-04-method-enables-high-oxide-based.html "combines transfer technology with epitaxial deposition... created single-crystal SrRuO3 films on silicon substrates, prepared corresponding spin-orbit torque devices... high 6.1×104 ħ/2e S·m-1 spin Hall conductivity enabling magnetization switching with low 1.3×1010 A·m-2 critical current density... multi-state magnetization switching enabling biological synaptic/ neuronal function simulation... artificial neural network utilizing these achieved 88% accuracy... low-power electronics, neuromorphic computing"

https://www.eurekalert.org/news-releases/1074842 "mesoporous silicon layers etched with tiny pores, electrically/ thermally conductive... huge internal surface area, biocompatible... electronic transport in extended wave-like states... conductivity decreases with increasing disorder... in contrast to hopping process, lattice phonons do not play role in charge transport... cryogenic silicon-based qubits needing thermal insulation... photovoltaics, thermal management and nanoelectronics, qubits for quantum computers, biosensors, battery anodes, capacitors." Related: Irish startup Equal1 unveils world’s first silicon-based quantum computer https://thenextweb.com/news/irish-startup-equal1-unveils-worlds-first-silicon-based-quantum-computer

https://techxplore.com/news/2025-02-silicon-chip-synaptic-neuronal-network.html#google_vignette "electrophysiological recording small yet telltale synaptic signals using 4,096 microhole electrode array on silicon chip... shows in parallel which neurons connect to which others... microhole electrodes better couple to interiors of neurons than the vertical nanoneedle electrodes/ easier fabrication... >90% of microhole electrodes intracellularly coupled to neurons on top, better quality recording data categorizes each synaptic connection based on characteristics/ strengths... working toward newer design deploying in live brain"

https://phys.org/news/2025-01-nanoislands-silicon-enable-switchable-topological.html "nanoscale ferroelectrics exhibit polar/ chiral electromagnetic topological textures... stable, controllable/ steerable by external electrical stimulus... BaTiO3 nanostructures form 30–60 nm (on top) trapezoidal islands on silicon substrate, with stable polarization domains... fine tuning 1st step of silicon wafer passivation induces nanoisland nucleation... domains can be electricly reversibly switched... centered, downward convergent polarization... swirling component around nanoisland axis causes chirality" Related: Steering magnetic textures with electric fields https://www.eurekalert.org/news-releases/1087626 Flipping the switch on material chirality: Modifying chirality with electricity https://www.eurekalert.org/news-releases/1111615