But, because of this elemental change, everything must be redeveloped: the hardware, the software, the programming languages, and even programmers’ approach to problems. Qubits are thus exponentially more powerful than bits, able to perform calculations that normal bits can’t. Quantum computers, like the ones Google is building, use qubits, which can take a value of zero or one, and also a complex combination of zero and one at the same time. When the temperature surrounding the processor is colder than the deepest void of outer space, the computations can begin.Ĭlassical computers speak in the language of bits, which take values of zero and one. The processor relies on superconductivity, meaning that, at ultracold temperatures, its resistance to electricity all but disappears. Once it is connected, the entire unit is placed inside a cylindrical freezer and cooled for more than a day. Sycamore harnesses some of the weirdest properties of physics in order to perform mathematical operations that contravene all human intuition. The processor, named Sycamore, is a small, rectangular tile, studded with several dozen ports. Bundles of cable snaked down from the top through a series of gold-plated disks to a processor below. In the middle of the warehouse floor, an apparatus the size and shape of a ballroom chandelier dangled from metal scaffolding.
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