Did Google Just Achieve ‘Quantum Supremacy’?

Did Google Just Achieve ‘Quantum Supremacy’?


Quantum computers are on the horizon, and
they’ve been stuck there for quite some time. All the theoretical advantages they promise
over classical computers, like speeding up drug development, helping to manufacture room
temperature superconductors, and cracking encryption remain just that: theoretical. However, a leaked paper from Google claims
that for the first time a quantum computer used its unique quantum properties to absolutely
dominate a classical computer in a specific task, demonstrating what’s known as “quantum
supremacy.” The paper was posted in September of 2019
on NASA’s website, since NASA and Google are collaborating on the project. Almost as suddenly as it appeared, it was
taken down again. But this is the internet, and Google of all
companies should know that the internet is forever. The paper was copied and made widely available. Anyone can still read it. I read it. A lot of it was utterly bewildering to me,
a humble internet host, but I still read it for you, dear viewer. Luckily for me and you, actual experts in
quantum computing read it too and weighed in on what it means. First off, they caution that it’s not yet
published in a scientific journal so it may not be the final version or even peer reviewed. We shouldn’t get too ahead of ourselves
and declare this the end of data security as we know it, as some have been suggesting. Experts also point out that Google’s quantum
computer bested a classical computer in a task that was tailor made to exploit the quantum
computer’s strengths. The computer was asked to simulate the outputs
of a pseudo random “quantum circuit,” basically a number generator. I say pseudo-random because due to quantum
interference, some of the numbers it generates should have a higher probability of occurring
than others. If the quantum computer works correctly, it
should produce a cluster of numbers that line up with what we statistically expect to see. Well surprise surprise, according to this
paper the computer that uses quantum phenomena to operate was better at predicting how quantum
phenomena would generate numbers than a classical computer. But you may be shocked to learn just how much
it stomps its supercomputer rivals. While the Google machine churned through a
million randomly generated numbers in 200 seconds, the paper estimates the most powerful
supercomputer on Earth today would do the same task, if it just had 10,000 years to
do it. Not bad for a chip with just 54 quantum bits,
or qubits, one of which wasn’t working. So if the leaked paper is to be believed,
then yes, Google has demonstrated quantum supremacy. No one said the task the quantum computer
demonstrated had to be useful for it to count. And no one said that this means it’s time
to throw our old hardware in the bin either. Quantum computers still have a long way to
go. Namely the biggest problem with them remains
errors caused by qubits decaying and losing information stored on them. To make what’s known as a logical qubit
that’s more coherent requires hundreds or thousands of physical qubits whose errors
cancel each other out. And a quantum computer capable of cracking
encryption would require thousands of logical qubits. Right now the most physical qubits we’ve
ever put together is 72, and that computer was actually too difficult to control. For quite some time it appears encrypted data
will remain uncrackable. But that doesn’t mean that Google’s demonstration
of quantum supremacy in this one esoteric task is insignificant. This is quite a milestone that computer scientists
have been working towards for decades. If their work checks out,it will be a major
step towards putting quantum computers to work solving problems that so far have been
out of reach. Problems that really matter, like developing
life saving drugs faster, or inventing new wonder materials. So if and when this paper gets published,
let’s all act really surprised and congratulate the researchers, okay? Quantum computers rely on superconductors
to function, which have to be kept at extremely low temperatures. If a quantum computer can help develop room
temperature superconductors, that could be a vital step to a quantum PC you could have
at home. If superconductors pique your interest and
you want to know more about the wild possibilities they could unlock, check out Maren’s video
here. Make sure you subscribe to Seeker to keep
up to date will all your quantum news, and as always, thanks for watching.

100 COMMENTS

    Google have just confirmed this today (Sycamore Processor). They've released some interesting info about it too, like the methods they used to reduce the errors in such a multi-connected qubit system.

    – Good stuff!

    But did they really? Actually not quite, because quantum supremacy is only given if a normal computer can't compute it. But give it 10k years and it will. I don't think a supremacy is even possible.

    Google said the quantum computer just solved a problem in a little over 3 minutes that would have takin a supercomputer over 10000 or 100,000 years to solve – not sure which one is correct – , so I need a super smart geek to answer this question . How do the engineers know that the answer is correct ? Will a supercomputer check the answer .lol

    Then what happend to us programmers ? If someday quantum computers will be available in the market? Shall we go back to school and learn how to program quantum computers?

    Pills that make you live to the age of 150, quantum computers, fully self driving cars, conquering mars with elon musk, cloud streaming, the next few years are going to be awesome

    Ok, but suppose it turns out that quantum esoterica is the actual future and then we will just have infinitely accelerating weirdness that eventually drives everyone insane? Isn't that possible? Maybe our future is The Joker.

    my brain achieves supremacy over elevtronic computers in the area area of coding 3D 2x150Mpix video into wavelet without time aliasing with low latency and low power consumption

    Nobody: ….

    This guy when he was explaining the task the computers had to make: The quantum computer demonstrated that the quantum properties of the quantum processes were quantum efficient with the quantum existence of it's predecessor's quantum mechanics over it's conventional counterpart with it's conventional methods of conventional calculation. This said the 18 qu-bits were more quantum efficient than the conventional bits of the conventional computing in regards to the quantum number generator, which has a duration of 18 million years to the power of quantum convention due to conventional mechanisms and quantum interference. That said the quantum calculations were quantum effective while its conventional counterpart were conventionally conventual to convention and conventionality. Thus having the quantum computer be on par with quantum's quantum. So in theory, yes! Google did achieve quantum supremacy!

    my H2O fish tank outperforms any Super-computer in the task of simulating every H2O molecule in it. Does it mean we have a "Supremacy" of H2O-tank computer? Seems we need more details about google experiment..

    the quantum computer was better at acting like a quantum computer than a classical computer… well done, have Nobel prize

    All the anonymous in the world will be happy. Hacking will be more popular than ever with this mew gemerations of computers.

    So will this be the end of Chess ? The perfect game will be established, either the one who makes the first move always wins or it will always be a draw.

    This sounds like nonsense. It's like saying 10,000 dice have quantum supremacy because they generate random numbers faster than a classical computer. It's ridiculous, even though it's technically true.

    Demonstrating Quantum Supremacy
    https://youtu.be/-ZNEzzDcllU

    "Let's all act really surprised and congratulate the researchers, Ok?"

    If you can generate prime numbers, then encryption is over. A quantum computer may be able to brute force these results… I'm very interested in the future.

    I didn't see an update here but IBMs summit solved this problem in 2.5 days. That is not quite 10000 years. https://www.sciencemag.org/news/2019/10/ibm-casts-doubt-googles-claims-quantum-supremacy

    IBM calls bs on this btw. They think their super computers could calculate this in a few days; 2.5 specifically. Quote: "We argue that an ideal simulation of the same task can be performed on a classical system in 2.5 days and with far greater fidelity." – IBM researchers Edwin Pednault, John Gunnels, and Jay Gambetta. https://www.forbes.com/sites/johnkoetsier/2019/10/23/ibm-googles-quantum-supremacy-is-150-million-percent-wrong/

    Quantum computing is a technology that we’ve been promised for years, and we’ve been told that when it arrives, it will change the world around us as we know it. Even though computer processing speed has increased exponentially over the past two decades, a successful quantum computer would make the abilities of the most advanced standard computers currently known to the human race appear feeble by comparison.

    Anyways, read the below. This might help.

    https://www.namasteui.com/did-google-just-make-a-quantum-supremacy-breakthrough/



    Regards,

    Sourav Basak

    Namaste UI

    Well, Guess What! that paper was published 2 days ago on Nature

    https://www.nature.com/articles/s41586-019-1666-5.pdf

    Super conductance (materials) @ room temperature were discovered by Indian IISc PhD student very recently.

    are more intelligent humans making world more complex and complicated for not so much intelligent people on the planet?

    the more we move towards poverty eradication, some bunch of brainies pull the development back and making the economic and social disparity stable.

    Mad funny… I guess uneducated people don't know about this place called China. LOL. Google is playing a game of catch up right now with quantum technology.

    If these things need a lot of cooling to run, why don't they just stick the damn things in orbit? Orbital quantum computer cores. Sweet.

    This is the beginning of the end of Crawling, now we hopefully leave NIS and begin producing major computations. Well done Google.

    Why don't we just make quantum chips for computing and classical computer hard drives for the storage?
    We can get THAT better when we get to it.

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