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An international study shows which factors determine the speed limit for quantum computations.

Which factors determine how fast a quantum computer can perform its calculations? Physicists at the University of Bonn and the Technion – Israel Institute of Technology have devised an elegant experiment to answer this question. The results of the study are published in the journal Science Advances.

Quantum computers are highly sophisticated machines that rely on the principles of quantum mechanics to process information. This should enable them to handle certain problems in the future that are completely unsolvable for conventional computers. But even for quantum computers, fundamental limits apply to the amount of data they can process in a given time.

Analog computers were the most powerful computers for thousands of years, relegated to obscurity by the digital revolution. This video is sponsored by Brilliant. The first 200 people to sign up via https://brilliant.org/veritasium get 20% off a yearly subscription.

Thanks to Scott Wiedemann for the lego computer instructions – https://www.youtube.com/watch?v=5X_Ft4YR_wU

Antikythera Archive & Animations ©2005–2020 Images First Ltd. https://www.youtube.com/watch?v=1ebB0tyrMa8 “The Antikythera Cosmos” (2021) follows the latest developments from the UCL Antikythera Research Team as they recreate a dazzling display of the ancient Greek Cosmos at the front of the Antikythera Mechanism.

Tides video from NASA – https://climate.nasa.gov/climate_resources/246/video-global-ocean-tides/

Ship animation from this painting – https://ve42.co/Agamemnon.

Moore’s Law, the op-amp, and the Norden bombsight were filmed at the Computer History Museum in Mountain View, CA.

Europe will soon produce a strategically vital component in the modern global economy as US semiconductor giant Intel chooses the site for a new cutting-edge chip factory.

Recent problems in global supply chains have highlighted the fundamental importance of semiconductors, which are used in a growing number of products including cars, TVs and smartphones.

Keen demand and the closure of semiconductor plants, particularly in Asia, due to pandemic disruptions led to a global chip shortage and forced car manufacturers such as Ford, Nissan and Volkswagen to scale back production.

A Rice University-led study is forcing physicists to rethink superconductivity in uranium ditelluride, an A-list material in the worldwide race to create fault-tolerant quantum computers.

Uranium ditelluride crystals are believed to host a rare “spin-triplet” form of superconductivity, but puzzling experimental results published this week in Nature have upended the leading explanation of how the could arise in the material. Neutron-scattering experiments by physicists from Rice, Oak Ridge National Laboratory, the University of California, San Diego and the National High Magnetic Field Laboratory at Florida State University revealed telltale signs of antiferromagnetic spin fluctuations that were coupled to superconductivity in uranium ditelluride.

Spin-triplet superconductivity has not been observed in a solid-state material, but physicists have long suspected it arises from an ordered state that is ferromagnetic. The race to find spin-triplet materials has heated up in recent years due to their potential for hosting elusive quasiparticles called Majorana fermions that could be used to make error-free quantum computers.

Tsinghua Unigroup Co, one of China’s biggest semiconductor giants and a key server supplier to the Chinese government entities is burdened with debt default.


The Chinese Communist Party (CCP) yet again finds itself in the middle of a battle with the private sector and tech entrepreneurs. This time over the all-important semiconductors. Tsinghua Unigroup Co., one of China’s biggest semiconductor giants and a key server supplier to the Chinese government entities, is burdened with debt defaults and undergoing rescue process.

Without naming the CCP, Zhao is promising to stand up to Communist Party leadership. In Xi’s enterprise-hating China, a private entity doesn’t simply rise out of nowhere and take over a leading semiconductor giant. And if any entity can dare to do that, it must be having the informal backing of the Communist Party.