University of New South Wales Sydney Builds Ultra Fast Two-qubit Gate
Speediest quantum operation yet
Excerpts and salient points ~
+ Australian scientists have linked together two electrons spins embedded in a silicon chip to form a two-qubit gate, the fundamental building block of a quantum computer.
“To make a universal quantum computer you want to make sure the errors are not accumulating,” she says. “So you surround the data qubits with ancillary qubits that you can entangle with them to probe what’s going on without disturbing the data qubit. “Error correction is a complex process, necessary for large-scale computers, and increases the numbers of physical qubits ultimately needed.”
+ The gate is 200 times faster than any other of its type, taking a mere 0.8 nanoseconds to complete an operation, and uses atom-based qubits that are known for their high accuracy and extremely low noise. 
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