Scientists reveal major quantum breakthrough that...

Discussion in 'General Off-Topic' started by Nish01, Mar 29, 2014.

  1. Nish01

    Nish01
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    ...could lead to ultrafast computers and unbreakable encryption.


    I have been very interested in quantum physics in the past couple years. Although i have never researched nor learned about quantum computers, to my uneducated eyes this seems like a very good announcement regarding computers.

    It also seems to me this would make beamNG.Drive much less resource intensive (is that the word?) and will offer a better way of playing in terms of more cars and more physics. (Sorry if i worded that weirdly)

    Just wanted to post this and get everyone's thoughts and opinions.

    P.S I havent read the whole article, and I dont plan on understanding all of it, so maybe if one of the more 'educated' members regarding quantum computing could summarize it, that would be greatly appreciated.
     
  2. logoster

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    well, it would still be as intensive, but the hardware would be able to handle it a LOT easier
     
  3. NkosiKarbul

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    I dont know too much about how exactly quantum computers will work all together one day, but such breakthroughs happend before and happen very offten. Sadly one breakthrough does not have to get you close to the final product, just one step further. I cant judge that particular one here, but im afraid it will take still quite some time untill it will run all together as independent device, and even longer until the public customer can order one for private use... if even.
    But if you run beamng.drive on a quantum computer, you dont have to ask yourself how many cars you will be able to spawn and simulate.^^
    You would grow old spawning cars while testing it, i think.
     
  4. ThreeDTech21

    ThreeDTech21
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    But.. Can it run Crysis
     
  5. Nish01

    Nish01
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    yeah that makes sense. So basically you'd be getting a better framerate with more cars and less stress on the machine.

    Now if only these can come in a reasonable price in a reasonable amount of time. In my opinion in a decade or less these 'super computers' will be available to the average consumer at a decent price...hopefully lol
     
  6. Aboroath

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    Oh yeah baby...a computer with the power of 1300 Nvidia Titans in SLI with a 690 thrown in for free and the size of a golf ball, and can actually
    display BeamNG at 30 FPS at 1024X768. Count me in!;)
     
  7. logoster

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    yeah, if this comes sometime soon, and is decently priced, i would gladly upgrade my pc, so as to be able to simulate 10000 moonhawks, and still get a very playable fps
     
  8. Hati

    Hati
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    Not sure about you guys seeing quantum computers. You might see computers with a quantum element for encryption or searching.

    They aren’t faster than computers, just different and suitable to more probability based applications. You’re saying you don’t know how they work, and every explanation is the same so here is mine. I’ve tried to make it less wordy than most would be. You may find I'm paraphrasing YouTube video that I cannot for the life of me find. If I could this post would be much shorter. A classical computer performs classical bits which are y’know, 0 or 1. Quantum computers use Qubits which can be 0 AND 1; both as the same time. All of the things you would use as a Qubit (photons, electrons, and nuclei) have a magnetic field which makes them analogous to a tiny bar magnet and they call that property spin. If you place an electron in a magnetic field then you will align it with that field. Alignment with the field is the lowest energy state, the 0 state. To make it align with anything other than the magnetic field you need to put energy in. so the lowest state for the electron is spin down.

    If you are delicate enough you could ‘balance’ the electron in its highest energy state which is opposed to the magnetic field exactly, and this would be the unstable spin up. It would be a bit like a compass pointing north; you could make it point south and stay there if you place it EXACTLY in opposition. But that requires energy to do; you apply some force to it to do that. Now so far what I’ve described is just like a classical bit, spin up and spin down, 0 and 1 respectively. The funny thing with quantum objects (thank you Heisenberg) is that they can be in both states at once. We don’t know what their energy is and we can therefore only know the probability of a state according to some kind of coefficient. When you measure the spin it will be either up or down, but beforehand you have a superposition of both. So this doesn’t help until you consider how 2 Qubits interact.

    With 2 Qubits there are four possible states for these things to be in,

    ▲▲
    ▼▲
    ▲▼
    ▼▼

    And again, it resembles classical bits

    11
    01
    10
    00

    All you’d need to do to get that value for a classical bit is look at the first and second bit. But with the Qubits you can make a superposition of all four states at once.


    So we can give the states some coefficients I’ve represented by Greek letters.

    α▲▲
    β▼▲
    γ▲▼
    δ▼▼

    And to determine the state of the quantum superposition I need to offer you four numbers (coefficients): Four bits of information. In a classical system you need far less information: two numbers for both bits. You can use this property in such a way that you can make sure 2 Qubits has 4 bits of information in it. For three Qubits you could have 8 different superposition states and therefore require eight numbers to tell you the state of the system. If you keep going you find that the equivalent amount of classical information bits in n Qubits is 2ⁿ classical bits. So once you have 2 to the 300 in the fully entangled state you then have as many bits as there are atoms in the observable universe

    The problem is that once you measure it they fall into a base state and therefore the information is lost upon the collapse of the Qubits from an entangled state. So at the end of your computation you don’t want a complicated superposition; because you cannot measure it and can only measure a state. So you design the logic operations in such a way that the final result is measurable only after you’ve done the computation. Vaguely this is why Quantum computers aren’t a replacement for a classical PC. They’re only fast when the problem they try and solve makes use of the fact that all the possible states exist at once to do paralleled calculations. If you only want to browse the forum or play BeamNG, chances are the quantum computer will be slower. If you want to search a phonebook for a number then you have a good application for a quantum computer.

    The Quantum computer would, instead of each search testing a single entry in the phone book; each search can manipulate all entries at once which would improve the odds statistically of finding the correct one. The media loves to misrepresent, hype and sensationalize science so you're best off getting your science and tech news from an actual science and tech journal ;)
     
    #8 Hati, Mar 29, 2014
    Last edited: Mar 29, 2014
  9. Nish01

    Nish01
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    Edited bold by me :D
    Thanks a ton for your interpretation.
     
  10. RhinoBlindado

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    Well, have in mind that the code would have to be rewritten, since they use qbits instead of bits so it is going to be hard, and right now they are just focusing these babes on replacing the actual supercomputers so they can predict weather and stuff like that faster, I'd like to see a desktop version, but eeeeeverything would have to be rewritten, like, all of it, down to the BIOS and deeper.
     
  11. Aboroath

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    With all do respect to the devs, I am happy to see a 20% speed increase in the physics. Each car sampling in it's entirety 2000?, times a second only allows
    my lowly Toshiba laptop to run 2 vehicles with 15FPS on Grid map. Frame rate drops to 3 FPS with one vehicle on any other map. Vegetation kills my frame rates.

    No complaints though.....the new 800 series gaming laptops are here;).
     
  12. Bubbleawsome

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    I think the next step is optic computing. An optic CPU with todays process node and architectures would be equivalent to something in the order of 3 trillion GHz IIRC.
     
  13. Keepermaster

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    Wow. So that means people finally can make some kind of "real life" simulation which would work without lagging? Think about that! Not to sound like a maniac, but creating your own "in-real life" world where you could be your own God... Neat. Well, what I also would have done: Learnt myself how to fix a car from the bottom of.
     
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