UEFI firmware flaws in certain ASRock, ASUS, GIGABYTE, and MSI motherboards allow early-boot DMA attacks before OS security loads.
Category: computing – Page 5
Silicon atom processor links 11 qubits with more than 99% fidelity
In order to scale quantum computers, more qubits must be added and interconnected. However, prior attempts to do this have resulted in a loss of connection quality, or fidelity. But, a new study published in Nature details the design of a new kind of processor that overcomes this problem. The processor, developed by the company Silicon Quantum Computing, uses silicon—the main material used in classical computers—along with phosphorus atoms to link 11 qubits.
The new design uses precision-placed phosphorus atoms in isotopically purified silicon-28, which are arranged into two multi-nuclear spin registers. One register contains four phosphorus atoms, while the other contains five, and each register shares an electron spin. The two registers are linked by electron exchange interaction, allowing for non-local connectivity across the registers and 11 linked qubits.
Because of the placement of silicon and phosphorus in the periodic table, the design is referred to as the “14|15 platform.” This 11-qubit atom processor in silicon is the largest of its kind to date, marking a major accomplishment for quantum computing.
Scientists build a quantum computer that can repair itself using recycled atoms
Like their conventional counterparts, quantum computers can also break down. They can sometimes lose the atoms they manipulate to function, which can stop calculations dead in their tracks. But scientists at the US-based firm Atom Computing have demonstrated a solution that allows a quantum computer to repair itself while it’s still running.
The team zeroed in on quantum computers that use neutral atoms (atoms with equal numbers of protons and electrons). These individual atoms are the qubits, or the basic building blocks of a quantum computer’s memory. They are held in place by laser beams called optical tweezers, but the setup is not foolproof.
Occasionally, an atom slips out of its trap and disappears. When this happens mid-calculation, the whole process can grind to a halt because the computer can’t function with a missing part.
Anil Seth — What is Consciousness: Data or Information?
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To study consciousness comprehensively and rigorously, what kinds of data or information are relevant? Data/information for Materialism theories, which are subject to the scientific method, can be well defined. But what about non-Materialism theories?
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Anil Seth is Professor of Cognitive and Computational Neuroscience at the University of Sussex, where he is also Director of the Sussex Centre for Consciousness Science. Seth is also Co-Director of the Canadian Institute for Advanced Research (CIFAR) Program on Brain, Mind, and Consciousness. Seth’s mission is to advance the science of consciousness, and to use its insights for the benefit of society, technology, and medicine.
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