The company is racing rivals including IBM Corp and Microsoft Corp to be the first to commercialize the technology and sell it through its cloud computing business.
IBM said a supercomputer employing a different set-up could solve the same challenge in under three days, while chipmaker Intel said “quantum practicality” remained years away. The US and Chinese governments have led in the burgeoning quantum technology field, pledging billions of dollars in funding to corporate and state researchers to fast-track quantum development and mitigate possible issues, including the tech’s expected ability to break digital encryption.
But there is a catch: Quantum researchers need to cool qubits to about absolute zero to limit vibration – or “noise” – that causes errors in calculations. It is in this challenging task that Google, which has designed much of its own electronics and used liquid helium for cooling, has made significant progress.
Sycamore, measuring about 10 mm across, is made using aluminium and indium parts sandwiched between two silicon wafers. In their experiment this year, the researchers were able to get 53 of Sycamore’s qubits to interact in a quantum state. “Quantum computers will never reign ‘supreme’ over classical computers, but will rather work in concert with them, since each have their unique strengths,” Dario Gil, director of research at IBM, wrote in a blog here
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