Artificial Intelligence · 2019-10-23

Google’s quantum supremacy – AI


This article was 1st published on our sister Site, The Internet Of All Things.

Google’s team of researchers have claimed in a paper published in scientific journal ‘Nature’ that they had attained what’s called as “quantum supremacy” for the first time in their super-computing effort.

Google quantum supremacy is indeed a major milestone because it means having the ability of using quantum computers to solve problems that current technology can’t even start to attempt.

According to the paper, Google’s 53-bit quantum computer called ‘Sycamore’, took a mere 200 seconds to perform a calculation that would have taken otherwise taken the world’s fastest supercomputer 10,000 years to complete.

Google quantum supremacy
Left: Artist’s rendition of the Sycamore processor mounted in the cryostat. (Forest Stearns, Google AI Quantum Artist in Residence) Right: Photograph of the Sycamore processor. (Erik Lucero, Research Scientist and Lead Production Quantum Hardware)

Here’s what Google said on its official AI blog:

It’s comprised of a two-dimensional grid where each qubit is connected to four other qubits. As a consequence, the chip has enough connectivity that the qubit states quickly interact throughout the entire processor, making the overall state impossible to emulate efficiently with a classical computer. 

The success of the quantum supremacy experiment was due to our improved two-qubit gates with enhanced parallelism that reliably achieve record performance, even when operating many gates simultaneously. We achieved this performance using a new type of control knob that is able to turn off interactions between neighboring qubits. This greatly reduces the errors in such a multi-connected qubit system. We made further performance gains by optimizing the chip design to lower crosstalk, and by developing new control calibrations that avoid qubit defects. 

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