461
submitted 11 months ago by boem@lemmy.world to c/technology@lemmy.world
top 50 comments
sorted by: hot top controversial new old
[-] Evil_Shrubbery@lemm.ee 97 points 11 months ago

Doom port pls, it's the law.

[-] phoneymouse@lemmy.world 72 points 11 months ago* (last edited 11 months ago)

It can play doom and not play doom and be in various stages in between.

[-] lemming741@lemmy.world 18 points 11 months ago

You don't know if you're playing DOOM or WOOD until you look

[-] Evil_Shrubbery@lemm.ee 14 points 11 months ago

So statistically, on average, it just about plays Doom

load more comments (2 replies)
[-] kakes@sh.itjust.works 95 points 11 months ago

Wait, seriously? That's quite a jump from the last one I heard about.

Also: it's actually 1,121 qubits, even more impressive.

[-] MaggiWuerze@feddit.de 40 points 11 months ago

Isn't that also quite the small form factor? I still had the fridge sized copper monstrosities in mind when thinking of quantum computers

[-] e0qdk@kbin.social 57 points 11 months ago* (last edited 11 months ago)

The attached picture says 133 qubits, so whatever that chip is (edit: Heron) it's not this thing.

IBM's post (that the article links) says:

Breaking the 1,000-qubit barrier with Condor

We have introduced IBM Condor, a 1,121 superconducting qubit quantum processor based on our cross-resonance gate technology. Condor pushes the limits of scale and yield in chip design with a 50% increase in qubit density, advances in qubit fabrication and laminate size, and includes over a mile of high-density cryogenic flex IO wiring within a single dilution refigerator.

So, it sounds like this is actually another fridge sized system.

[-] metaStatic@kbin.social 22 points 11 months ago

without a room temperature super conductor it will always be mostly cooling

[-] rishabh@discuss.tchncs.de 16 points 11 months ago

These qubits oscillate at microwave frequencies where the quantum information is stored. This means they need to be kept at a temperature where the microwave frequencies are completely devoid of any thermal noise. For microwave frequencies, this temperature is just a few millikelvins above absolute zero. Unfortunately, the temperature is required due to the fundamental nature of thermal noise due to temperature. Making the qubits out of room temperature superconductor would not solve the problem of the need to cool them down - unless they can be operated at higher frequency. There are quantum computers made using light/optical photons which do operate at room temperature because optical photons are at much higher frequency which has no thermal noise even at room temperature.

So, in conclusion, everytime you hear about superconducting qubit, they are always in a giant dilution refrigerator which gets bigger for more qubits as more connections from room temperature to qubits are needed.

load more comments (1 replies)
[-] Diabolo96@lemmy.dbzer0.com 19 points 11 months ago* (last edited 11 months ago)

I may be mistaken but the fridge sized copper monstrosity is the system that cool the quantum chip, so unless they miniaturized the cooling system it didn't change.

[-] kakes@sh.itjust.works 9 points 11 months ago

Yeah, from my understanding, the chip itself is about the same size as a CPU chip.

[-] thisisbutaname@discuss.tchncs.de 14 points 11 months ago

From what I remember the chip itself is pretty small, the size is all due to the cooling component.

Also keep in mind you've probably seen a development version of a quantum computer, where things are set up to be easily accessible to allow fixing and tinkering, without regard for size and optimization of space.

load more comments (1 replies)
[-] Smokeless7048@lemmy.world 69 points 11 months ago

This really is amazing to see. It feels like just year when we were discussing 1, 2, or 10 qubits.

Are there any/many current uses for these quantum computers?

[-] 800XL@lemmy.world 38 points 11 months ago

breaking encryption algorithms

[-] Smokeless7048@lemmy.world 30 points 11 months ago

From what i heard, even 1,000 qubits isn't close to enough for modern passwords: https://www.nature.com/articles/d41586-023-00017-0

[-] Rin@lemm.ee 26 points 11 months ago

Paywall. Also, passwords and RSA are two different things.

[-] aBundleOfFerrets@sh.itjust.works 13 points 11 months ago

Reversing hashing algos is what people mean when they talk about quantum computers cracking passwords / encryption, though.

load more comments (1 replies)
[-] rishabh@discuss.tchncs.de 32 points 11 months ago

For now they are only being used for research purposes. For example, simulating Quantum effects in many atom physics and implementing error correction for future quantum computers. Any real applications still need some time but the pace of development is really quite something.

load more comments (16 replies)
[-] MonkderZweite@feddit.ch 11 points 11 months ago

Wasn't there a study that, with the current approach of evaluating an average to break it down to a few finite states, they might never be able to do for what they were developed; cracking passwords?

[-] frezik@midwest.social 24 points 11 months ago

If by "cracking passwords" you mean reversing password hashes in a database, quantum computers aren't going to make a big dent there. The standard industry ways of doing that wouldn't be affected much by QCs. Breaking encryption, OTOH, with QCs is a concern, but also vastly overrated. It would take orders of magnitude more qubits to pull off than what's been worked on so far, and it may not be feasible to juggle that many qubits in a state of superposition.

I get really annoyed when people focus on breaking encryption with QCs. They are far more interesting and useful than that.

QC can make logistics more efficient. Have you ever seen photos of someone unpacking a giant Amazon box holding one little micro SD card? Amazon isn't dumb about these things, but our best methods of packing an entire truck is a guess. Packing algorithms would take too long to calculate how to perfectly pack it, so they come up with a solution that seems OK, and that leads to a few "filler" boxes that are unnecessarily large, among other inefficiencies. QC can solve this problem without taking the age of the universe to come up with a solution.

The order in which that truck delivers those packages can also be made more efficient with QC.

Then there's molecular simulations, which have the promise of making medications that are more effective, more likely to pass trials, and with fewer side effects. This can be done far faster on a QC.

load more comments (2 replies)
load more comments (1 replies)
load more comments (10 replies)
[-] OhStopYellingAtMe@lemmy.world 62 points 11 months ago

Damn. I never even finished Q-Bert 1. That game is hard! Are the sequels any better?

[-] TimeSquirrel@kbin.social 24 points 11 months ago

If you're on NES, turn the controller 45 degrees to the right. You're welcome.

[-] jaybone@lemmy.world 15 points 11 months ago

Wasn’t the controller on the arcade a goddamn roll ball? Ugg

[-] balancedchaos@lemmy.world 27 points 11 months ago

I see you're also in the Ibuprofen demographic.

[-] shalafi@lemmy.world 10 points 11 months ago

That hit home, hurts. Take it back.

load more comments (4 replies)
[-] BaardFigur@lemmy.world 58 points 11 months ago

I guess my passwords are in danger

[-] Blackmist@feddit.uk 25 points 11 months ago

Even in 20 years time, they'll probably be in more in danger of phishing than from quantum computing.

[-] Redredme@lemmy.world 10 points 11 months ago
[-] echodot@feddit.uk 9 points 11 months ago* (last edited 11 months ago)

Jokes on them now they have to pay my electricity bill

They have already developed quantum proof encryption algorithms, something something latent spaces something something. Anyway, as long as the website has been updated to use the new algorithms you'll be okay. You may just have to change your password one time in case it was compromised under the old encryption scheme.

load more comments (1 replies)
load more comments (1 replies)
[-] nullPointer@programming.dev 21 points 11 months ago
[-] Mbourgon@lemmy.world 8 points 11 months ago

Yes, but your 1650 is still the bottleneck

load more comments (1 replies)
[-] SharkAttak@kbin.social 16 points 11 months ago

"Now we hope to understand in better detail how these works and what to do with them"

[-] conditional_soup@lemm.ee 20 points 11 months ago

It's worth noting that the laser was much the same way. It was described early on as a solution in search of a problem, and lasers have had an incredible impact on technology.

load more comments (9 replies)
[-] not_woody_shaw@lemmy.world 15 points 11 months ago

So, web encryption broken when? Now?

[-] echo64@lemmy.world 22 points 11 months ago* (last edited 11 months ago)

It takes about a billion qbits to break 2048bit encryption, so a while. I saw something about reducing it to about 20 million qbits recently, but it's still a while off.

[-] Overzeetop@sopuli.xyz 8 points 11 months ago

More importantly, how long until I can guarantee a 51% chance of solving every bitcoin block?

[-] cyd@lemmy.world 7 points 11 months ago

Hash functions are not known to be quantum vulnerable (i.e., there's no known quantum algorithm that provides an exponential speedup, best you can do is to use Grover's algorithm to slightly speed up the brute force search). So maybe never.

load more comments (5 replies)
load more comments (1 replies)
load more comments (2 replies)
[-] Imgonnatrythis@sh.itjust.works 11 points 11 months ago

Great, so when operating systems have finally reached relative stability, the future holds crashes coming from the chipset.

[-] xia@lemmy.sdf.org 7 points 11 months ago

1000? Wasn't that the threshold for breaking RSA crypto, or something?

[-] Speculater@lemmy.world 26 points 11 months ago

I think it's closer to 20,000,000 and that is out the Noise Intermediate Scale Quantum computing, meaning modern chips would need to double or quadruple the number of qubits for error detection and error correction in order to run even basic algorithms. That's not to mention that they'd need to be super cooled for up to eight hours and stay in a super position without decoherence into their ground states before performing the Shor's Algorithm.

TL;DR: We need an improvement over 20000x and better tech to break RSA, but this is a good step forward!

https://en.wikipedia.org/wiki/Shor%27s_algorithm

load more comments (2 replies)
load more comments (1 replies)
[-] tsonfeir@lemm.ee 7 points 11 months ago

You gotta coax the qubits, man.

load more comments (2 replies)
[-] tungah@lemmy.world 7 points 11 months ago

How much is that in intel/AMD gigafloppers?

[-] Speculater@lemmy.world 6 points 11 months ago

It's actually impossible to do a direct comparison of flops to what I guess we'd call quflops, as the algorithms are not directly comparable. Quantum computers are good at quantum algorithms that can do operations in a single time step that a classical computer couldn't, likewise, to simulate a classical computer on a quantum computer would be very resource intensive.

load more comments
view more: next ›
this post was submitted on 04 Dec 2023
461 points (97.7% liked)

Technology

59670 readers
1939 users here now

This is a most excellent place for technology news and articles.


Our Rules


  1. Follow the lemmy.world rules.
  2. Only tech related content.
  3. Be excellent to each another!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, to ask if your bot can be added please contact us.
  9. Check for duplicates before posting, duplicates may be removed

Approved Bots


founded 1 year ago
MODERATORS