*Technology* Google touts quantum computing milestone

### Google reportedly attains 'quantum supremacy'

Its quantum computer can solve tasks that are otherwise unsolvable, a report says.A new quantum computer from Google can reportedly do the impossible.

In a new scientific paper, Google researchers claim for the first time to have demonstrated " quantum supremacy," where a quantum computer outperforms a traditional one.

The age of quantum computing may have begun not with a flashy press conference, but with You are going to email the following Google claims quantum computing milestone Message Subject (Your Name) has forwarded a page to you from Science

SAN FRANCISCO (AP) — Google said it has achieved a breakthrough in quantum computing research, saying an experimental quantum processor has completed a calculation in just a few minutes that would take a traditional supercomputer thousands of years.

The findings, published Wednesday in the scientific journal Nature, show that "quantum speedup is achievable in a real-world system and is not precluded by any hidden physical laws," the researchers wrote.

### Google may have just ushered in an era of ‘quantum supremacy’

‘The first computation that can only be performed on a quantum processor’Google’s quantum computer was reportedly able to solve a calculation — proving the randomness of numbers produced by a random number generator — in 3 minutes and 20 seconds that would take the world’s fastest traditional supercomputer, Summit, around 10,000 years. This effectively means that the calculation cannot be performed by a traditional computer, making Google the first to demonstrate quantum supremacy.

The key to quantum computers lies in qubits. The normal computers that we use every day use "bits" that store information as a 1 or a 0. A qubit, on the A qubit can hold all four of those combinations at once. A quantum milestone . The trouble is that qubits are incredibly unstable and make a lot of errors.

Google AI Quantum is advancing quantum computing by developing quantum processors and novel quantum algorithms to help researchers and developers solve near-term problems both theoretical The Google AI Quantum team is currently attempting to achieve this milestone with its own hardware.

Quantum computing is a nascent and somewhat bewildering technology for vastly sped-up information processing. Quantum computers might one day revolutionize tasks that would take existing computers years, including the hunt for new drugs and optimizing city and transportation planning.

The technique relies on quantum bits, or qubits, which can register data values of zero and one — the language of modern computing — simultaneously. Big tech companies including Google, Microsoft, IBM and Intel are avidly pursuing the technology.

"Quantum things can be in multiple places at the same time," said Chris Monroe, a University of Maryland physicist who is also the founder of quantum startup IonQ. "The rules are very simple, they're just confounding."

### Google may have taken first step towards quantum computing 'supremacy'

Google may have made a breakthrough on the path toward creating a viable quantum computer. In a research paper briefly published to NASA's website and only seen by the Financial Times, the company reportedly claims to have achieved a feat known as "quantum supremacy." That is, the search giant says it has successfully created a computer that's able to complete a calculation that is virtually impossible for traditional computers to perform. Google says Sycamore, its 53-qubit quantum computer, was able to calculate a proof in three minutes and 20 seconds that shows the numbers created by a random number generator are in fact random.

This brings us to the quantum computing supremacy limit, which talks about the ability of a quantum machine to solve the In the latest development, it seems that IBM has beaten Google and simulated a quantum This milestone was achieved by dividing the simulation task into parallel chunks, which

[ Quantum computing , one of the “jazziest and most mysterious concepts” in science, has struggled to come of age.] But first, scientists must prove such a machine can be built, and some researchers cautioned against getting too excited about Google ’s milestone since so much more work needs to

Google's findings, however, are already facing pushback from other industry researchers. A version of Google's paper leaked online last month and researchers caught a glimpse before it was taken down.

IBM quickly took issue with Google's claim that it had achieved "quantum supremacy," a term that refers to a point when a quantum computer can perform a calculation that a traditional computer can't complete within its lifetime. Google's leaked paper showed that its quantum processor, Sycamore, finished a calculation in three minutes and 20 seconds — and that it would take the world's fastest supercomputer 10,000 years to do the same thing.

But IBM researchers say that Google underestimated the conventional supercomputer, called Summit, and said it could actually do the calculation in 2.5 days. Summit was developed by IBM and is located at the Oak Ridge National Laboratory in Tennessee.

### IBM questions Google quantum computing claims

IBM has publicly called out Google's claim that it reached quantum supremacy.Quantum supremacy is a concept which was originally put forth by Caltech professor John Preskill and in order to reach it, a company would need to demonstrate that a quantum computer could do something that today's classical computers cannot.

IBM has announced a milestone in its race against Google and other big tech firms to build a powerful quantum computer . Dario Gil, who leads IBM's quantum

Quantum for researchers. IBM Q is your most passionate collaborator to advance foundational quantum computing research that will make real-world impact. Work with the best experts across experimentation, theory, and computer science and explore new possibilities in the field of quantum

Google has not commented on IBM's claims.

Whether or not Google has achieved "quantum supremacy" or not may matter to competitors, but the semantics could be less important for the field of quantum research. What it does seem to indicate is that the field is maturing.

"The quantum supremacy milestone allegedly achieved by Google is a pivotal step in the quest for practical quantum computers," John Preskill, a Caltech professor who originally coined the "quantum supremacy" term, wrote in a column after the paper was leaked.

It means quantum computing research can enter a new stage, he wrote, though a significant effect on society "may still be decades away."

The calculation employed by Google has little practical use, Preskill wrote, other than to test how well the processor works. Monroe echoed that concern.

"The more interesting milestone will be a useful application," he said.___O'Brien reported from Providence, Rhode Island.

## Google's quantum computer will beat supercomputers before the end of 2017

Google is one of the most advanced companies in the world today, along with IBM quantum computing. And Mountain View seems poised to meet the ambitious goals it set for September 2016: to assemble, before the end of 2017, a quantum computer capable, on a very particular algorithm, of delivering results that no conventional supercomputer can not reach In other words, to demonstrate what scientists call quantum supremacy, the superiority of this technology over current techniques.

At a conference in Munich, Germany, Alan Ho, an engineer at Google's quantum IA lab, explained that the company is currently working with a 20-bit system offering "fidelity on two qubits" 99.5%, a measure of the error rate that the processor produces. The higher this rate, the greater the reliability of calculations. Indeed, in essence, the qubits are very unstable and sensitive to external disturbances (temperature, magnetic fields ...), the correction of errors thus remains a challenge for the pioneers of the field.

49 qubits, 99.7% reliabilityFor Google, the next step, on which Alan Ho's team is working, will be to build a 49-qubit superconducting chip with a 99.7% fidelity. It is with this system that Google intends to demonstrate the superiority of quantum computing, on an algorithm that remains arduous for conventional machines: the simulation of the behavior of a random arrangement of quantum circuits. According to Alan Ho, this step will be taken before the end of the year. Until today, the most powerful quantum system presented by the Californian firm (in 2015) contained only 9 qubits.

Unlike conventional bits, which store information as 0 or 1, their quantum counterparts are able to take both states at once. Even more strange, two qubits placed in this so-called superposition state can be linked by a phenomenon of quantum entanglement, which means that an action on the first has immediate repercussions on the second. These are the characteristics that must increase the computing capacity of quantum systems. IBM

and Google in overlay?Spurred by the arrival of John Martinis, a researcher from the University of Santa Barbara, California, hired by Google in 2014, Mountain View's work on the subject is emerging today as the most advanced in the development first quantum systems really exploitable. Its only real rival: IBM, which in May, unveiled a quantum processor of 17 qubits, the firm of Armonk presents as the most powerful quantum system out of his labs to date. It is this processor that will serve as the basis for the quantum systems that Big Blue intends to market as part of its IBM Q initiative (Q for Quantum). And the American society also seems determined to quickly deliver systems integrating 50 qubits, systems offering answers to some problems today out of reach of conventional supercomputers.

Explainer: Google hails 'quantum supremacy', but don't chuck out your PC just yet .

Explainer: Google hails 'quantum supremacy', but don't chuck out your PC just yetGiven the task of finding a pattern in a seemingly random series of numbers, Google's quantum computer produced an answer in 3 minutes and 20 seconds. It estimates that the Summit supercomputer https://www.ibm.com/thought-leadership/summit-supercomputer at the Oak Ridge National Laboratory in Tennessee would take 10,000 years to complete the task.

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