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Mar 2, 2024

Unlocking the Quantum Secrets Hidden in Diamonds for Advanced Electronics

Posted by in categories: electronics, quantum physics

Highly precise optical absorption spectra of diamond reveal ultra-fine splitting.

Besides being “a girl’s best friend,” diamonds have broad industrial applications, such as in solid-state electronics. New technologies aim to produce high-purity synthetic crystals that become excellent semiconductors when doped with impurities as electron donors or acceptors of other elements.

The Science of Doping.

Mar 2, 2024

The Future of Energy — Scientists Unveil Roadmap for Bringing Perovskite/Silicon Tandem Solar Cells to Market

Posted by in categories: solar power, sustainability

Researchers at King Abdullah University of Science and Technology (KAUST) have developed a comprehensive plan to introduce perovskite/silicon tandem solar cells into the marketplace, setting the stage for a world energized by widespread, cost-effective renewable energy, both in Saudi Arabia and globally.

The authors of the article, published in esteemed journal Science, include Prof. Stefaan De Wolf and his research team at the KAUST Solar Center. The team is working on improving solar efficiency to meet Saudi Arabia’ solar targets.

Perovskite/silicon tandem technology combines the strengths of two materials – perovskite’s efficient light absorption and silicon’s long-term stability – to achieve record-breaking efficiency. In 2023, the De Wolf laboratory reported two world records for power conversion efficiency, with five achieved globally in the same year, showing rapid progress in perovskite/silicon tandem technology.

Mar 2, 2024

Uploading_and_Branching_Identity (1).pdf

Posted by in category: futurism

Uploading and branching identity.

Shared with Dropbox.

Mar 2, 2024

WileyK_TheStreamOfConsciousnessAndPersonalIdentity_slides_2020 (1).pdf

Posted by in category: neuroscience

Keith wiley stream of consciousness and identity.

Shared with Dropbox.

Mar 2, 2024

Beyond Qubits: An Extensive Noise Analysis for Qutrit Quantum Teleportation

Posted by in category: quantum physics

The four quantum noises-Bit Flip, Phase Flip, Depolarization, and Amplitude Damping-as well as any potential combinations of them, are examined in this paper’s investigation of quantum teleportation using qutrit states. Among the mentioned noises, we observed that phase flip has the highest fidelity. When compared to uncorrelated Amplitude Damping, we find that Correlated Amplitude Damping performs two times better. Finally, we conclude that for better fidelity, it is preferable to introduce the same noise in channel state if noise is unavoidable.

Mar 2, 2024

Comparative connectomics of dauer reveals developmental plasticity

Posted by in category: neuroscience

How the dauer, an alternative developmental stage in nematodes, exhibits distinct behavioral traits remains unclear. Here, the authors reveal the neural circuitry underlying these distinctions by reconstructing the dauer connectome and comparing it with other stages.

Mar 2, 2024

Fractional Electrons: MIT’s New Graphene Breakthrough Is Shaping the Future of Quantum Computing

Posted by in categories: computing, education, quantum physics

An exotic electronic state observed by MIT physicists could enable more robust forms of quantum computing.

The electron is the basic unit of electricity, as it carries a single negative charge. This is what we’re taught in high school physics, and it is overwhelmingly the case in most materials in nature.

But in very special states of matter, electrons can splinter into fractions of their whole. This phenomenon, known as “fractional charge,” is exceedingly rare, and if it can be corralled and controlled, the exotic electronic state could help to build resilient, fault-tolerant quantum computers.

Mar 2, 2024

Anharmonic strong-coupling effects at the origin of the charge density wave in CsV3Sb5

Posted by in category: futurism

The origin of the charge density wave in vanadium antimonides has been widely debated. Here, the authors report the cooperation of electron-phonon and phonon-phonon coupling for the formation of the charge density wave in CsV3Sb5.

Mar 2, 2024

Van der Waals quaternary oxides for tunable low-loss anisotropic polaritonics

Posted by in category: materials

Tellurite molybdenum quaternary oxides, a family of van der Waals materials, show slow group velocity and long lifetimes with promising implications for tunable low-loss anisotropic polaritonics.

Mar 2, 2024

Waymo can now charge for robotaxi rides in LA and on San Francisco freeways

Posted by in categories: robotics/AI, transportation

Waymo received approval Friday afternoon from the California Public Utilities Commission to operate a commercial robotaxi service in Los Angeles, the San Francisco Peninsula and on San Francisco freeways.

The approval removes the last barrier for the Alphabet company to charge for rides in these expanded areas. Importantly, it opens up new territory for Waymo in one of the country’s largest cities and unlocks a route to San Francisco International Airport, which is located south of the city.

Continue reading “Waymo can now charge for robotaxi rides in LA and on San Francisco freeways” »

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