IBM has proposed using a measure of "quantum volume" that should double every year - and it would be equivalent to Moore's Law, which is observed in traditional computer computing. According to Moore's Law, the number of transistors on a chip, and hence the computation density, should double approximately every two years. Until now, he worked, but on the way new - quantum - computers with their own rules.
Moore's Law for Quantum Computers
Quantum machines rely on quantum bits, or qubits, to manipulate data. But simply adding qubits may not improve the performance of the machine. Because their fragile quantum state can be disturbed by even the slightest fluctuations or changes in temperature - this phenomenon is known as "noise." As a result, there will be errors in the calculations.
IBM has proposed quantum volume as an appropriate natural measure of progress. It still counts qubits, but also includes error rates and communication quality between qubits.
At this week's meeting of the American Physical Society, IBM will present results showing that the quantum volume of its machines has doubled from 4 in 2017 to 8 in 2018. The company says it recently unveiled a 16-volume Q System One machine.
At the moment, this metric is evolving like Moore's law for traditional calculations. According to this law, the number of transistors on a silicon microchip doubles approximately every two years, but there are signs that this rate is slowing down.
IBM is a leader in quantum computing and was the first to make its machines available through the cloud for others to use. However, the company faces stiff competition from Rigetti Computing and Intel.
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Developing a better way to compare these quantum computers is very important, but every company will promote criteria and measures that support its own hardware and software. Therefore, Moore's new quantum law will imply that the PR volume of quantum machines will double every year …
Ilya Khel