Name: 量子至上主義。Sycamoreプロセッサのベンチマーク (QuantumCasts) (Quantum supremacy: Benchmarking the Sycamore processor (QuantumCasts))
Uploaded: 2021-01-14T10:53:20.000Z
Duration: 28 min 35 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

results on Quantum Supremacy: Benchmarking the Sycamore

that it can solve certain useful problems that

are simply beyond the reach of classical computing.

which is still years of research in the future.

But we also hope that in the near term, in this blue region,

we will be able to find useful applications.

But, of course, before a quantum computer

can do something useful that is intractable for classical

at all that is intractable for a classical computer.

And so a real question that has been on our minds

in this whole industry for the last decade is,

And this is something that our group has been focusing on

It's something that was given a name by John Preskill in 2012.

He called it quantum supremacy, to perform tasks

beyond what can be accomplished with ordinary digital

He went on to ask, is controlling large-scale quantum

Well, I am pleased to say that it is merely really,

that we published last fall where we showed crossing

So maybe a picture would be a better way to reflect this.

And I want to emphasize that this is a huge team effort.

And I'm very thankful to each and every person, each

and every member of this team who contributed to this work.

And I'm honored to be here today representing them.

have updated versions of our supplementary information.

At the centerpiece of this paper was a new processor

And it's positioned here right at this boundary

And that's what I'm going to be presenting about today.

First, the march from graduate school in the upper

And then how that plays into this research

direction towards useful error corrected machine.

For there is this talk, I'll be following this outline.

So we'll look first at the Sycamore processor.

Second, how to calibrate and benchmark Sycamore.

to flash back a few years to what the state of the art

This is a chip from the Santa Barbara group.

And it has nine transmon qubits in a linear array.

that the control wiring takes up about half

it is not at all obvious how we could scale it up

to a two-dimensional array with 50-plus qubits.

We need to really re-engineer the system in order

made it possible to make such a two-dimensional array

was moving to a scalable flip-chip design, where we

So one chip, this top chip, will be solely responsible

And the other chip will take care of all the readout and all

And by dividing the responsibilities like this,

we'll be able to have a more scalable design.

One of the key technologies that makes this possible

is these indium bumps, which provide a superconducting

interconnect and a mechanical connection between the two

This is a photograph showing a small processor

prototype that demonstrated this flip-chip technology.

So there are four chips in this photograph.

At the bottom is a qubit chip that has a small 2 by 3

array of superconducting qubits in the center.

And the rest of the chip is just covered in those indium bumps.

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量子至上主義。Sycamoreプロセッサのベンチマーク (QuantumCasts) (Quantum supremacy: Benchmarking the Sycamore processor (QuantumCasts))

crucial

simultaneously

basically

infrastructure