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Scientists create an ‘optical conveyor belt’ for quasiparticles

Using interference between two lasers, a research group has created an ‘optical conveyor belt’ that can move polaritons — a type of light-matter hybrid particle — in semiconductor-based microcavities. This work could lead to the development of new devices with applications in areas such as quantum metrology and quantum information.
http://news.poseidon-us.com/T74kFp

Learning the imperfections: New approach to using neural networks for low-power digital pre-distortion (DPD) in mmWave systems

Engineers have demonstrated a simple computational approach for improving the linearization of power amplifiers (PA), such as those used in mmWave systems and other telecommunication systems. The proposed technique involves training small neural networks to directly estimate the coefficients of a polynomial for digital pre-distortion (DPD) based on their frequency response during calibration sweeps.
http://news.poseidon-us.com/T74kFm

A new, low-cost, high-efficiency photonic integrated circuit

Researchers have developed scalable photonic integrated circuits, based on lithium tantalate, marking a significant advancement in optical technologies with potential to widespread commercial applications.
http://news.poseidon-us.com/T74kFM

Wireshark 4.2.5 Released, (Sat, May 18th)

Wireshark release 4.2.5 fixes 3 vulnerabilities (%%cve:2024-4853%%, %%cve:2024-4854%% and %%cve:2024-4855%%) and 19 bugs.
http://news.poseidon-us.com/T74Bqt

Diamond glitter: A play of colors with artificial DNA crystals

Using DNA origami, researchers have built a diamond lattice with a periodicity of hundreds of nanometers — a new approach for manufacturing semiconductors for visible light.
http://news.poseidon-us.com/T72j08

Chatbots tell people what they want to hear

Chatbots share limited information, reinforce ideologies, and, as a result, can lead to more polarized thinking when it comes to controversial issues, according to new research. The study challenges perceptions that chatbots are impartial and provides insight into how using conversational search systems could widen the public divide on hot-button issues and leave people vulnerable to manipulation.
http://news.poseidon-us.com/T72bp4

The benefits of ‘best value’ for small businesses in the federal market

GSA’s best value legislative proposal will allow GSA to craft policies and procedures that more closely align with the commercial market. The post The benefits of ‘best value’ for small businesses in the federal market first appeared on Federal News Network.
http://news.poseidon-us.com/T726xs

Another PDF Streams Example: Extracting JPEGs, (Fri, May 17th)

In my diary entry “Analyzing PDF Streams” I showed how to use my tools file-magic.py and myjson-filter.py together with my PDF analysis tool pdf-parser.py to analyze PDF streams en masse.
http://news.poseidon-us.com/T71fVd

Second senior cyber leader this week to exit federal service

Eric Goldstein, the executive assistant director for cybersecurity for CISA, will leave his role after three plus years in June. The post Second senior cyber leader this week to exit federal service first appeared on Federal News Network.
http://news.poseidon-us.com/T702FX