Quantum computers: Computing the impossible

Quantum computers could crack problems that are impossible for conventional computers. But first researchers have to build one that's big enough to be useful. This animation looks at the challenges and rewards of creating a quantum computer.

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[JamesJ]

I remember when a regular pc would take up an entire room. People also thought a regular computer would never be used in everyday life, C'mon man!

[VNQM]

To everyone responding "useless video": did your ego just kicked in and made you respond to show everyone that you're smart and already know these qc basics? Good job! You successfully showed the people of earth that you are a genius via a YouTube comment! Be proud of yourself.. ah, you already are, aren't

Nature, thanks for the video ;)

[VGV]

Good video, had all the info I needed!

[SuperGattan]

current computers do not search large database one by one, the use advanced logarithm like bubble sort & binary search. where it starts in the middle of the data and by comparing the value and spleting the database and start again in the middle.

[Mr_i_o]

In principle sure, but in practice how does it actually do it?>

[SoCalFreelance]

I'm still highly skeptical. This is because everyone talks about how quantum computers work on the periphery, but no one can explain in a grounded way without falling back on theoretical physics. This is unlike Von Neumann architecture/computing which can be explained to a child.

[TheVasellius]

does anyone knows what software is used for making this animation

[IMYTnNERDEE]

in what program was this beatiful animation made?

[valeskaweich]

even if they could be IT IS already build and running! Search "D-Wave" Quantum computer...! :O

[nyx]

What these explanations don't mention is that quantum computers are probabalistic. There's a chance that the computer will spit out the wrong answer even if you perform the computations correctly.

[artemkovera]

i think only Scott Aaronson can adequately explain quantum computing

[Slarti]

Where to start - searching through every card? Computer systems are much more sophisticated than only being able to use what in effect is a table scan - some up let's have a better example.

[TheForge]

if the NSA go their hands on quantim.computing we will have zero privacy

[r.markquisbrown]

I wonder if this is when they will start to use bio-quarts for their qubits?

[verioffkin]

What about energy consumption? More things, same money?

[kabbalahcowboy]

Nice Job!  As the video suggests, today's fastest supercomputers, which crunch trillions or more operations per second, carry out only one operation at a single moment in time. Some interesting works out there take the possibilities of quantum computer processing to their logical conclusions. The book “On Computer Simulated Universes” discusses the possibility of running computer simulated universes.  It's a strange new world.

[GuillaumeVerdonA]

that quantum parallelism explanation was highly inaccurate. We know that a general unstructured search problem on a quantum computer will only benefit of a square root of n speedup over classical.

[globaluser]

They already have build quantum chips and these chips are used in sets of big network machines.

[jstrickus]

Slick graphics, but both audio and graphics devoid of useful information. Sad waste of 3:13 (plus time to write this).

[JS-hfjw]

That video was great bro. Keep it up. You gonna do well .