University of Sussex scientists develop technique to isolate quantum computers from disruptive environmental noise

A team of scientists, led by Professor Winfried Hensinger at the University of Sussex, have made a major breakthrough concerning one of the biggest problems facing quantum computing: how to reduce the disruptive effects of environmental “noise” on the highly sensitive function of a large-scale quantum computer.

Quantum computers put blockchain security at risk

By 2025, up to 10% of global GDP (Gross Domestic Product) is likely to be stored on blockchains. A blockchain is a digital tool that uses cryptography techniques to protect information from unauthorized changes. It lies at the root of the Bitcoin cryptocurrency. Blockchain-related products are used everywhere from finance and manufacturing to healthcare, in a market worth more than US$150 billion.

Yale Researchers “Teleport” a Quantum Gate

Yale Researchers "Teleport" a Quantum Gate Yale University researchers have demonstrated one of the key steps in building the architecture for modular quantum computers: the "teleportation" of a quantum gate between two qubits, on demand. Their work has been published on Nature. The key principle behind this new work is quantum teleportation, a unique feature of quantum mechanics that has previously been used to transmit unknown quantum states between two parties without physically sending the state itself. Using a theoretical protocol developed in the 1990s, Yale researchers experimentally demonstrated a quantum operation, or "gate," without relying on any direct interaction. [...]

China’s Quantum Key Network Demonstration

China’s Quantum Key Network demonstration. China has the quantum technology to perfectly encrypt useful signals over distances far vaster than anyone has ever accomplished, spanning Europe and Asia, according to a stunning research paper published this year on Physical Review Letters. “We have demonstrated intercontinental quantum communication among multiple locations on Earth with a maximal separation of 7,600 kilometers” say the teams, which are led by Anton Zeilinger at the University of Vienna and by Jian-Wei Pan at the University of Science and Technology of China in Hefei, China. University of Science and Technology of China Bits of [...]

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