/sci/ - Science & Math

>>3135668
>and now have a 10,000,000$ computer capable of decrypting anything.
>capable of decrypting anything.
No. Quantum computers are not magic.

I like the picture.

It says -125 Kelvin.... That is magic.

>the worlds first quantum computer
>implying "normal" computers don't take into consideration quantum mechanics
I haven't read anything about them but I already know that it's just a buzzword!

Woah, they are different, not magic but different. Qubit versus bit.

>>3135677
>mfw I got it

It's a mind blowing achievement if it isn't fake and, to answer the OPs question, it is the death of conventional encryption.

Although it isn't the death of all encryption - check out Quantum teleportation - http://en.wikipedia.org/wiki/Quantum_teleportation

It might be the death of privacy for the poor (or poorly connected) individual, but it certainly isn't the death of privacy for state actors or the rich/powerful

>>3135690
> to answer the OPs question, it is the death of conventional encryption.
You haven't even checked what this thing can do. You just assume that any quantum computer means that all classical encryption is super-easy. That's not the case.

Unless I missed some news somewhere (and I may have), the largest number that has yet been factored by a quantum algorithm was 15. (turned out its prime factors are 5 and 3, but don't tell anyone).

>>3135684
I don't get it. How can it be -125 K?

>>3135690
If it has 128 qubits, that is not enough for cryptanalysis. The application of quantum computing to cryptanalysis is for breaking public key systems like RSA and similar. These keys are generally around 1024 bits.

>>3135724
I think it is a typo. But I don't get how it can be superfluid helium at -124'C

>>3135724

Its a photoshopped version of the picture from their website.

>>3135724
>-125 Kelvin
Is this shooped?
If not, LOL

I do accept your observation that there is an ounce of hyperbole in my reply. Their use of a random markov field to collapse to an answer by quantum annealing is not immediately so generally applicable so as to render all encryption obsolete.

But just over a decade ago the introduction of the first waves of main stream computers contained less bits than this first generation quantum computer and so it is conceivable that within the next decade that they become far more general.

That is the perspective that I was taking with my post. Probably would of be wise to add those stipulations.

>capable of decrypting anything
it's not fast. It's not even desktop PC fast.It hits 56 petaflops a second for one second, then needs 128 more bits.

>>3135734
It could have a population inversion. I don't know, haven't read any details. But negative temperatures are possible under special conditions.

>>3135753
nope until citation given. Negative temperatures require less than no energy.

>>3135766
nope.avi
>http://en.wikipedia.org/wiki/Negative_absolute_temperature

Whether this D Wave thing actually has a negative temperature I don't know. It's more likely to be -124 degrees C.

>>3135790
>A substance with a negative temperature is not colder than absolute zero, but rather it is hotter than infinite temperature.
The shit?

I'm guessing people have yet to realize that the text in OP's pic is a shooped joke of the original pic?

Just, you know, so you don't need to keep on bickering uselessly.

>>3135802
Here's the actual poster. It's probably way less than 128 qubits. You probably can't do much with it.

>>3135807
it's 128 quibit, it says so on their site. no speed rating is given.

>>3135817
ok. still, you can't do cryptanalysis with 128 qubits.

>>3135827
Why not? that's <span class="math">4^{128}[/spoiler] conventional bits to work with.

You can probably do more decrypting with 10,000,000$ worth of Dell computers.

>>3135832
What? You can still only read in or out 128 bits of classical information and there "adiabatic quantum computing" may not be able to implement Shor's algorithm. They make claims that it can solve such problems on their site, but their papers lack any implication that those claims are true and still suggest coherence times to short for any of the problems to be meaningfully done. So, it might be able to factor 15 on a good day.

>>3135840
it should be possible to read both states. What use is a quantum computer that behaves exactly like a normal one?

>>3135844
You can only load in a classical state and read out a classical state. Once you have read in a state, you can apply Hadamard gates to get them into superpositions, but you can't read superpositions into the thing. A for why you can only read out classical information, that is because read out requires measurement which destroys the superposition.

>>3135832
That's not how it works. That will let you factor a 128 bit number. Like I said earlier, for cryptanalysis, you need to factor at least 1024 bit numbers. Quantum algorithms don't help to break symmetrical keys, as far as I know.

Its the end of the Chinese being able to keep any secrets thats what it is.

>>3135856
>chinese
>secrets
everything china does it does openly, because no country or organisation can challenge them. They are in charge of the planet.

What's that equation mean? Looks kinda like math or physics.

>>3135992

Wow you sure, looked like poetry to me.

Retard,

>>3135668

>Minus 125 Kelvin
>56 Petaflop/s
>Bose Equation

....are D Wave an elaborate troll?

>>3135851

For a single threaded application its capable of 2^128 look ups per cycle. This basically turns standard encryption algorithms on their head. A password that would take years to be bruteforced by a standard processor core can be found in a matter of minutes if not seconds.

Except they still haven't demonstrated entanglement.

>>3136420
This is not how it works... at all.
>2^128 look ups per cycle.
wat?

- kelvin
oh shit what are you doing nigger.jpg

>>3136420
Do you even know how quantum computation is supposed to work?

D-Wave are Snake-oil-vendors, just like the cold fusion guys and "infinite" energy idiots.
The best thing we got so far are 2 qbits in superposition, or tiny fractions of a second.
Coherence is a bitch and will probably take massive breakthroughs to solve

>>3136665
As far as I know we are up to 14, but yeah.

Holy fuck is this legit?

Fuck Trucrypt, I'm magnetizing all my hard drives just to be safe.

Do you think the hacking attack on Lockheed was because they bought this quantum computer?

Maybe they understand something about it that isn't being released to the public yet.