The IT giant wants to prove quantum superiority next year - which could go wrong

In 201? Google plans to hold 3r3209. computer competition and compare the performance of your 72-qubit Bristlecone chip with the capabilities of the NASA Pleiades supercomputer. The IT giant plans to show that quantum excellence is attainable. Under the cut - more about the tests and possible difficulties encountered in the company. 3r3193.  
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JD Hancock CC BY [/i]
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3r3141. A few words about quantum supremacy
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Quantum superiority is a conditional point in time when quantum computers are 3r3333. learn 3r3209. solve some computational problems much faster than classical systems. Such tasks, for example, include the enumeration of keys SHA-256. 3r3193.  
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The theoretical possibility of quantum superiority in October of this year was proved by Sergey Bravy from IBM Research, David Gosset from the University of Waterloo and Robert Koenig from Robert Munich. His research they published in the journal Science 3r3209. in which it was shown that under certain conditions a quantum machine can overtake the classical computing system. 3r3193.  
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Although the theoretical possibility of quantum superiority has been proven, in practice this has not yet been done. Next year, Google is planning to correct this "misunderstanding." 3r3193.  
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3r3141. The essence of the experiment is Google 3r3142. 3r3193.  
To prove the quantum superiority hypothesis, Google teamed up with NASA 3-333120. compare 3r3209. The performance of the new 72-qubit Google chip, code-named Bristlecone, and the Pleiades supercomputer, which is 3r3355. takes
24 place in 3r3357. Top500 3r3209. the most powerful computing systems in the world (??? petaflops). 3r3193.  
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Google's quantum chip and NASA's supercomputer, which will simulate the operation of quantum chains, will produce a series of test calculations. Later the results of these calculations will be compared. The result of the calculations, presented by the Pleiades, will be considered to be obviously correct. 3r3193.  
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The IT giant wants to prove quantum superiority next year - which could go wrong 3r3193.  
3r33130. Photo NASA 3r3209. PD [/i]
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The experiment will be conducted on the Google Cloud API platform, since it will not work to place these two cars in the same room. At the same time, for Bristlecone to work, a number of conditions must be observed: for example, the ambient temperature must be equal to absolute zero. 3r3193.  
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The first test results are 3r3–3120. will present 3r3209. in July 2019. Google representatives are confident that Bristlecone will be able to achieve quantum supremacy. IT giant
holds promise
on their efficient computational algorithms and error correction mechanisms that take into account the “fragility” of qubits, 3r388. collapsing under the influence of the environment
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3r3141. Why the Google experiment could fail 3r3142. 3r3193.  
In May, scientists at Alibaba published a study (3r-398. PDF 3r-?209.) That asserted that quantum superiority can only be spoken when the number of errors in the computing of quantum computers is zero. Even if the car thinks faster, there is no point in it without the right result. And these errors certainly occur when writing (and reading) data into qubits due to the destruction of their quantum state. The more qubits, the higher the chance that they will begin to interfere with each other’s work. 3r3193.  
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Reach zero value while no one was able to. In the same Bristlecone, the error rate is 0.6%. And although Google believes that this is enough, in practice everything may turn out differently. 3r3193.  
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Note that the world is developing several projects that should help in creating effective error correction mechanisms in quantum computers. For example, Sebastian Krinner (Sebastian Krinner) from Zurich Swiss Higher Technical School offered 3r3209. combine several “simple” qubits into one logical one, reducing their number. But for the practical implementation of this technology will require years of development. 3r3193.  
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3r3114. Others are trying to solve the problem by reducing the entropy and combining several quantum systems into one big one. For example, in the blog we are
told 3r3209. about researchers from the University of Pennsylvania and their concept of the demon Maxwell, as well as the teleportation of quantum gates, which was demonstrated by scientists at Yale University. 3r3117. 3r3193.  
But even if it is possible to implement sufficiently effective error correction mechanisms for quantum computers, another difficulty arises. Methods for simulating the operation of quantum circuits (as well as the computational power of classic supercomputers) 3r3-33120. do not stand still
. Therefore, even if Google succeeds in defeating Pleiades, in the future classic cars will be able to “catch up and overtake” the quantum ones. 3r3193.  
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3r33130. Photo IBM Research 3r3209.
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3r3141. Contributions from other companies 3r3142. 3r3193.  
One of the companies involved in the quantum race is Intel. Of the last 3r3145. achievements 3r3209. companies - computer with 49 qubits. According to the roadmap, in the next 5-7 years, the IT giant plans to build a 1000-qubit system. 3r3193.  
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The company assumes that with so many qubits the superiority of quantum computers over traditional ones is ensured. However, there are those who are counts that you need a machine with at least a million cubits. 3r3193.  
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Another company working in this area is the startup Rigetti. In October, his representatives 3r3-3157. announced 3r3209. about a million dollar reward to anyone who proves the superiority of the qubit system over a classic computer. 3r3193.  
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To spur research, the company developed 3r3209. A cloud service for creating and running quantum algorithms that is accessible to everyone. Rigetti experts expect that experiments with a cloud and quanta will have a positive impact on the development of both technologies. 3r3193.  
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P.S. A couple of articles from our corporate blog:
 
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3r3179. How IaaS helps grow a business: three tasks that the 3r3209 cloud will solve.
 
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P.P.S. Materials from our Telegram channel about IaaS and not only:
 
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