Today's Tech News: Notable or Not?

https://www.eurekalert.org/news-releases/1129338 "efficiency bottlenecks in high-power microwave systems, overcome utilizing phonon-assisted bulk carrier excitation rather than low-efficiency impurity-level absorption... 98.93% voltage conversion efficiency under a 4K volt bias/ near material's theoretical limit, 17.7 MW/ square cm peak output power density maintaining structural stability across wide voltage range... miniaturization of high-power defense and low-altitude drone security systems"

https://www.eurekalert.org/news-releases/1127505 "phonons slower/ more compact, ideal storing/ routing information on single chip, but interaction too weak/ not useful for computing... overcome using nm-scale mechanical resonator around color-center spin qubit in diamond trapping phonon forcing it to bounce back forth millions times at 100,000X slower than light changes qubit state, wavelength also 100,000X smaller at same frequency enabling 1,000s qubits in space of single optical component for more compact quantum memory... bridges quantum languages"

https://www.eurekalert.org/news-releases/1126815 "6G needs THz, but wavelengths too long for compact microchips... overcome: dissolve salt in water creating supersaturated solution, crystallize heating to 80°C, couple light/ phonons within lead iodide lattice confinement compressing THz into <1 μm regions (original wavelength 100s of μm)... lead iodide light-vibration oscillations persist for long time before dissipating, stabilizing data transmission... photonic microcircuits faster/ generate less heat... waveguides, resonators, beam splitters/ modulators"

https://www.eurekalert.org/news-releases/1125836 "trap electrons in few atoms thick crystal layer restricting movement to 2D making behavior more predictable /wave-like, apply high electric current, electrons energize/ emit sound while surrounding crystal stays near absolute 0... ultrasound imaging through solid metal/ deep biological tissue with much higher resolution, vibrations process data faster/ channel heat away from microchips, medical diagnostics, global communication, sonar... future: graphene crystal for even higher speeds"

https://phys.org/news/2026-04-quantum-dark-modes-longer-block.html "quantum systems' dark mode states decoupled from external fields, invisible to driving lasers/ microwaves controlling computer, blocking phonons' transfer between system's other parts, stopping network scalability... resolved introducing artificial quantum information, forcing dark mode coupling with environment on demand... topological control over phonons, enabling information movement without getting stuck/ blocked... phonons as scalable quantum buses connecting different chips... 2–3 years away"

https://phys.org/news/2025-12-femtosecond-lasers-limits-nanostructures-thermal.html "manipulates/ scatters phonons (quasiparticles of vibrational energy that conduct heat) through small, parallel grooves (created via high-speed, powerful laser ablation) on silicon/ silica thin films... limits phonons' average travel distance reducing thermal conductivity... laser throughput >1,000X faster than single-beam electron-beam lithography... highly scalable wafer-level mass production: maskless, resist-free, CMOS-compatible... high-performance computing, on-chip energy conversion, quantum devices" Related: Cracking the mystery of heat flow in few-atoms thin materials https://phys.org/news/2025-12-mystery-atoms-thin-materials.html Nanoscale design channels hybrid light–vibration waves to carry heat more efficiently https://phys.org/news/2026-05-nanoscale-channels-hybrid-lightvibration-efficiently.html

  https://www.eurekalert.org/news-releases/1094609 "phonons/ superconducting qubits both operate at GHz frequencies, perform well at low temperatures needed to preserve quantum states, long lifetimes... superconducting qubit on chip connected to tiny mechanical oscillator (serving as memory) interacting with electrical signals carrying quantum information... acoustic waves travel much slower than electromagnetic waves, enabling much more compact devices... mechanical vibrations do not leak energy, lengthening storage times... future: 3 to 10X faster interaction rate"

https://www.eurekalert.org/news-releases/1094280 "ghost hyperbolic phonon polaritons propagate in ray-like paths within transparent birefringent calcite having specially shaped gold asymmetric triangular nano-antenna fabricated directly onto surface to launch waves over 80 μm (was 20)... selectively excites modes with lower losses, thereby greatly reducing energy waste... heat management in large-scale GPU clusters, guiding quantum states over long distance in quantum information systems, improved molecular sensors, anisotropic nanophotonic devices" Related: Polaritons enable tunable and efficient molecular charge transfer across broader spectrum of light https://phys.org/news/2025-09-polaritons-enable-tunable-efficient-molecular.html

https://www.eurekalert.org/news-releases/1089922 "signal zig-zags through/ around holes in silicon nitride membrane perforated with many triangular 10 mm holes, with 1 out of a million signals lost... current fluctuation amplitude similar that in electronic circuits, but the later decreases about 100K times faster... quantum computers/ bio-sensors which depend on super-precise signal transfer" Related: Tomorrow’s quantum computers could use sound, not light https://www.eurekalert.org/news-releases/1098842

Inductive reactance https://phys.org/news/2025-05-smart-phonon-boosts-efficiency-eco.html "heat phonons disrupted by rattling (phonon avoided crossing) dramatically slows down heat travel, lowering thermal conductivity, enhancing thermoelectric performance... single (rather than poly)-crystal conducts better, reaching 1.4% power conversion efficiency in single-leg thermoelectric module—one of the highest reported for undoped Zn4Sb3... κL of approximately 0.36 W/m·K in the 300–600 K range and a peak thermoelectric figure of merit (zT) of 1.0 at 623 K... fewer defects/ optimized carrier mobility"

https://phys.org/news/2024-05-topological-phonons-vibrations.html "predict opological phonon existence in approximately 5K materials... solid-state materials' nontrivial band topologies, leading to phonon surface states complementing/ enhancing electronic surface states... 50% of materials exhibit at least one non-trivial gap... facilitates strong surface electron-phonon coupling, potentially leading to surface superconductivity... frequency filtering, mechanical energy attenuation under imperfect conditions, heat transfer and IR photoelectronics, phonon diodes or acoustic waveguides"

https://phys.org/news/2024-05-phononics-materials-smaller-powerful-wireless.html "100X smaller (smartphone size of earbuds), require less signal strength, power... transmitting mechanical vibrations through material at frequencies much too high to hear... combines semiconductor and piezoelectric to generate giant nonlinear interactions between phonons, 1 beam can change another beam's frequency... avoids losses from having to go back and forth between radio and sound waves, that add up degrading performance... phonons can be manipulated in ways that used to only be realized with transistors"

https://phys.org/news/2024-03-magic-linking-ultrasound-magnetic.html "faster, less heat... magnon quasiparticles representing collective excitation of spins, and phonon acoustic surface waves propagating along film... nano-structured surface acoustic wave resonator confining ultrasound waves to specific spot enhances shear sound waves allowing strong coupling in Co20Fe60B20 film at room temperature between surface sound waves and resonator's magnets... quantum possibilities at ultra-low temperatures"

https://phys.org/news/2023-09-quasi-particle-bridges-microwave-optical-domains.html "mixing confined quantum fluids of light and GHz sound leads to phonoriton: part photon, phonon and semiconductor exciton... coherently convert information between optical and microwave... energy splitting between 2 light fluids precisely tuned controlling densities using laser... control the device with microwaves and inject 7 GHz phonons into trap... bidirectional microwave-to-optical conversion... interaction scales with both polariton and phonon populations... photonics, optomechanics and optical communication" Related: Phonon engineering for extended lasing beyond the fluorescence spectrum https://phys.org/news/2023-10-phonon-lasing-fluorescence-spectrum.html

https://phys.org/news/2023-06-phonons-quantum.html "beamsplitter induce quantum superposition state for 1 phonon, interference between 2 phonons... transmitting half and reflecting other half back to its source... lithium niobate... quantum superposition, phonon both reflected and transmitted... quantum state collapse into 1 of 2 outputs... new kinds of calculations...phonons equivalent to photons... linear mechanical quantum computer.... directly integrates phonons with qubits... hybrid quantum computer combines linear with qubit-based quantum computers Related: Calculating thermal properties from phonon behaviors https://phys.org/news/2023-07-thermal-properties-phonon-behaviors.html Chip-based phonon splitter brings hybrid quantum networks closer to reality https://www.eurekalert.org/news-releases/1100739