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How to make?

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Thread replies: 28
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File: 1000-Qubit-chip_2.jpg (598KB, 1920x1280px) Image search: [Google]
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Can somebody without blabbing all the physics this/alternate reality that talk. Just tell me straight up.

How and what is a quibit made?

I cant find ANYTHING
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>>9125383
classified
>>
>>9125383
A true quantum computer doesn't exist, so nothing.
>>
>>9125383
Read the Science review from Schoelkopf & Devoret
(Superconducting qubits: an outlook or something like that)
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>>9125564
then why is it called that?

Hoe do YOU define a quantum computer?
>>
So if we make a true quantum computer that uses quantum entanglement to communicate at FTL speeds between 2 machines, does that mean we can make a computer that infinity scalable in size? If we have 2 machines, add a 3rd, then a 4th, and so on... Kinda like an internet, except the internet bandwidth speed would be FTL. In effect making one giant global sized computer. Also, if we build such a machine, would it also be plausible that aliens would have their own version of a FTL distributed computer system? What if our our distributed computer system accidentally intersects with some alien's distributed computer system. Wouldn't that mean we could communicate with aliens, or have access to some alien lifeforms internet? Now if it's possible for this to happen by accident, and there's more than 2 intelligent alien life forms capable of building these quantum computers, would it not be reasonable to say that all reasonably intelligent alien life forms participate in a interstellar internet system?

I guess what I'm getting at is, when do we get to see alien porn?
>>
i partly just want to own one quibit to somehow incorporate it into a regular computer.

How would a quibit interact along other components you think?
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>>9125555
>
Get out of here CIA pleb!
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>>9125713
It can't interact with them, the basis of encoding information is inherently different
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>>9125728
I get the whole "Horse racing the right brothers plane" analogy

But i guarantee you that in the beginning of computers. That same thing was said

I mean come on the first computers ran off of punch cards!
>>
>>9125713
>>9125734
It would be about as useful as a lone qubit; useless.
>>
>>9125383
It's not "made" of anything, it's just the basic unit of information for quantum computers. Same way that a bit is the unit of information for conventional computers.
>>
>>9125704
>So if we make a true quantum computer that uses quantum entanglement to communicate at FTL speeds


That's impossible so the rest of your post is irrelevant.
>>
>>9125778
That's disingenuous. The classical answer to his question for example is obvious, he is speaking about the state of the transistors. What he is asking is obviously the analog to that.
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>>9125704
>communicate at FTL speeds
So I have the feeling that you heard the phrase "quantum computer" and decided in your head what that should mean and didn't do any actual reading on it.
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>>9125854
This guy gets it! YES, If we think about "quantum " computers as not computers.

Then, somebody tell me how to make information analysis chip/machine.

Pretty sure we get confused with terms that quantum doesn't belong with computer.

Lets pretend computers do not exist at all ok?

How do i make pic related? Whats the process?
>>
So pretend that currently now, your typing on a machine i have no idea of. But you want to explain how to make a quibit chip/analyzing machine.

Lets just call it a machine for now, so not to confuse.
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>>9125899
If you're talking about D-wave's qubits, they're encoding information using superconductors.
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>>9125913
quibits isnt a base name for that technology?

I'm sure there are variations of it but in my world a hard-drive is still a hard-drive. No matter how fast or slow it runs
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>>9125935
Qubit is a quantum analogue of a bit. Just like how it's possible to choose many things to represent your bits (magnetic states in your hard drive, voltage in your circuits), there are many choices for qubits, ranging from the internal electronic states of ions, magnetic spins of molecules and D-waves choice of superconductors and flux.
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>>9125944
Very thought out answer, i appreciate it. But lets say im holding the "Mother board" of a d-wave or any other "quantum machine" What am i holding?

Material wise, what is holding this quibit in its place?
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File: maxresdefault.jpg (147KB, 1920x1080px) Image search: [Google]
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>>9125957
>What am i holding?

well, there is not a motherboard in the classical sense, its a ceiling suspended column of different stages of signal processing, thermal and EM shielding. https://venturebeat.com/wp-content/uploads/2015/05/D-wave.jpg (on this pic the shielding blankets are removed, you could say this assembly is the motherboard which holds the cpu on the bottom <-pic related) I/O subsystem is responsible for passing information from the user to the processor and back. the signals are low frequency (<30MHz) analog currents, carried on metal lines, transitioning to superconducting lines at low temperatures. components of the I/O subsystem include the processor mount and wirebonding to it, low frequency bandpass filters for removing noise from the lines; room temperature electronics for converting signals coming from a front end server to analog currents; and the front end server which receives programming instructions from a user.
thats the computer with the main shielding blankets in place https://venturebeat.com/wp-content/uploads/2015/05/D-wave.jpg
it is divided into different temperature and EM shielding zones, the bottom literally is the coldest spot in the known universe, it is using helium in a "dry" dilution pulse tube refrigerator to reach a temperature of 15milli kelvin, which is approximately 150 times colder than interstellar space. the cooling system creates a pulsing, almost heartbeat sounding noise in operation.
here is a video about the architecture of the chip
https://www.youtube.com/watch?v=PqSgmCg1kew
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File: cooling-082015 copy.png (190KB, 223x400px) Image search: [Google]
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>>9126008
heres a pic of the temperature zones of the processor I/O assembly.
The computer can be cooled down to operating temperature within several hours, and once this temperature is reached remain cold for months or years.
the entire computer is enclosed into yet another thermal/EM shielding enclosure, which makes most of its size. it measures about 10'x10'x10' https://www.wired.com/wp-content/uploads/2014/05/ff_dwave-sb_f.jpg
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>>9126008
..........I know the...this is a waste of time on this board.

Everything you just said can be told from a 15 year old doing a youtube video for 1000 views.

No offense really anon.

But i get (sorta) the science behind the function and whats required to bring it to life ( your response)

Mystery is.....*breath

What is the base of a quibit chip, and what is the materials required to build one.

If i handed you a d-wave "mother board" then told you what you just told me. Then said build another one could you?
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File: tut-hardware-fab-cross-section.jpg (53KB, 550x166px) Image search: [Google]
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the chips are photographically etched onto a silicon wafer using techniques modified from the processes used to make semiconductor integrated circuits, its not magic. kinda like one of these old magnetic core memories from the 60s , a grid of super conducting traces on a silicon substrate, where the junctions can be encoded with a qbit. the qbit is not a physical thing, its just a state of information.
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>>9125957
>what is holding this quibit in its place
that is like asking "what is holding my 64 bit in place" its just a superconducting multiplexed array of transistors
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File: tut-hardware-qubit-loops.jpg (77KB, 400x300px) Image search: [Google]
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>>9126028
>transistors

they do not use transistors, they use josephson junctions, wired into a multiplexed grid. a j junction is a quantum mechanical device, which is made of two superconducting electrodes separated by a spacer , like a thin insulating tunnel barrier, a normal metal, or a semiconductor, ferromagnet, etc.
with some modifications, you can make these in a regular processor foundry
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File: graphene_ballistic_366x210.jpg (11KB, 366x210px) Image search: [Google]
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>>9126033
when a junction is encoded it holds an electromagnetic field which can be measured for each cell to get a readout, like the core memories back then
Thread posts: 28
Thread images: 6


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