For the first time, researchers have measured the accuracy of two-qubit logic operations in silicon, an advance that may help develop full-scale quantum processor. All quantum computations can be made up of one-qubit operations and two-qubit operations, which are the central building blocks of quantum computing. In 2015, researchers at the University of New South Wales (UNSW) in Australia were the first to build a quantum logic gate in silicon, making calculations between two

Honeywell International Inc. threw down the gauntlet to Google and IBM in the race to create a new kind of supercomputer, announcing its own breakthrough in the arcane world of quantum mechanics. “We have a very unique technology that we believe is as good or better than anything that’s out there today,” CEO Darius Adamczyk announced on May 14. The company pegs the potential market for quantum-computing technology at $50 billion. Ten years of quiet work lies behind the bold s

Quantum cryptography holds both promises and threats for our current cryptographic infrastructure. The most obvious threat is quantum computers could decrypt data that’s been encrypted using many of our current systems. But it also holds the promise of secure communications channels for key distribution. Eventually, using quantum technology, it may even be possible to build entire encryption systems that are considered unbreakable. Almost all widely used encryption systems re