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Author Topic: Bitcoin Blockchain & Quantum computing  (Read 3641 times)
BitcoinBarrel
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February 16, 2017, 05:40:22 PM
 #21

It's very simple, a value cannot be two values at the same time. This is a flawed idea from the start.



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bob123
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February 17, 2017, 11:42:43 AM
 #22

Hold your horses folks, Quantum Computing is Science-Fiction and NOT reality. Most likely will never exist.

Google made a simple quantum "computer" with three logic gates (well quantum gates in this case). While it does not compute anything, the outputs and inputs from the test rig confirms the theories on it. Might take a while but quantum computing is real.

This would probably take about 5-7 years until first real prototypes are available..
A solution to that problem can be found in this time easily.
But once it happened, todays crypthography can be thrown away.














 

 

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vnvizow
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February 17, 2017, 03:20:00 PM
 #23

It's very simple, a value cannot be two values at the same time. This is a flawed idea from the start.
Prove all the scientists working on it wrong then, probably could make a name for yourself and that generic website.

Walk down to The Winchester, grab a cold pint and wait for all of this to blow over
AgentofCoin
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February 17, 2017, 08:15:45 PM
 #24

Quantum computing will be like the jump from 32 bit to 64 bit CPU's.

Except the advancement will be much bigger.

IMHO, it would be much more complicated than that, but I do not think it can even be possible, according to quantum mechanics, a physical system, whether a set of electrons orbiting an atom, is described by a wave function but there is the postulate that a measurement destroys the consistency of an unobserved state and inevitably after the measurement stays in an unpredictable mixed state,
starting from that fact the traditional computation is based on two predictable states 1 y 0 (absence or presence of voltage) which allows operations at low level, behavior of the particles it is sometimes unpredictable, or are subject to admit there are non-physical objects called "consciousness", so that being uncontrolled states can not be used because it would not be the expected result, the mere fact of trying to understand and manipulate these phenomena can be sanctioned by that consciousness, in the same way that the human being defines its rules and as far as another can do use of his creation or created things and sanctions to those who do not meet, in my opinion that is something that should be avoided.

My understanding is that consciousness has now been shown by experimentation
not to be a factor in the outcome. The observer can be a non-conscious system as
long as that system is designed for observation, like a powered up camera.
Consciousness has no effect on the outcome, it seems to be pure observation alone.

In theory, a non-conscious advanced robot that could "observe", could collapse the
wave, and in theory create outcomes unknowingly.

I support a decentralized & unregulatable ledger first, with safe scaling over time.
Request a signed message if you are associating with anyone claiming to be me.
nemgun
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February 18, 2017, 06:09:03 PM
 #25

Just in order to setup some informations for the people who thinks Quantum Computing is scify, have a look at this website : https://www.dwavesys.com/
It is Dwaves, with some millions of dollars, you can have your own quantum computer. I wonder why there isn't any altcoin who wants to buy one and use it to break bitcoin algo, or any other algo.

Even if it is hard to predict wether a quantum computer can or can't break the code, everyone knows that he have serious chances to do it.
By the way, Dwaves isn't the only manufacturer, there is annother one in china.

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February 19, 2017, 08:55:06 PM
 #26

It's very simple, a value cannot be two values at the same time. This is a flawed idea from the start.
Prove all the scientists working on it wrong then, probably could make a name for yourself and that generic website.

Lol why would I invest time and energy in something I think is ridiculous?



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nemgun
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February 20, 2017, 05:13:38 PM
 #27

It's very simple, a value cannot be two values at the same time. This is a flawed idea from the start.
Prove all the scientists working on it wrong then, probably could make a name for yourself and that generic website.

Lol why would I invest time and energy in something I think is ridiculous?

If you have some millions $, we could do something to prove that bitcoin is superior to quantum computers, at least for now, because sooner or later they will be strong enough to break bitcoin double sha256.
But untill there, bitcoin is safe, do not believe the lies about wallet.dat been hacked, it is totally fake, anyone can generate fake informations in a unix terminal, they can even make a matrix-like screen, the package is "cmatrix" if you want to have it as a screen saver.

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February 26, 2017, 05:30:33 PM
 #28

I don't think there are true quantum computers.

Only quantum emulators.

A true quantum computer could probably break all existing encryption in seconds/minutes/hours.

Rather than months/years/decades.


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vnvizow
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February 27, 2017, 06:51:29 AM
 #29

I don't think there are true quantum computers.

Only quantum emulators.

A true quantum computer could probably break all existing encryption in seconds/minutes/hours.

Rather than months/years/decades.
It'll take a while before it gets to that, remember when regular computers take up stadium sized spaces because the logic gates are huuuge? That's where Quantum computers are at rn

Walk down to The Winchester, grab a cold pint and wait for all of this to blow over
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February 28, 2017, 08:28:50 PM
 #30

It'll take a while before it gets to that, remember when regular computers take up stadium sized spaces because the logic gates are huuuge? That's where Quantum computers are at rn

I'm not certain what the processing capability of a 1 QBIT CPU is.

It could be a lot. Even a basic quantum computer with 1 quantum bit could be groundbreaking technology.

 Smiley


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nemgun
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February 28, 2017, 08:41:42 PM
 #31

The links i sent you are about true quantum computers, not emulators, they work with close to subzero coolers. have a closer look at what they are offering.
There are also some shows in the informatics scene where companies from different countries shows their state of the art quantum computers.
For sure they are not miniaturized, and maybe this is why you think they are emulators, but i don't think you can emulate a quantum computer. Check also MIT quantum computer.

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February 28, 2017, 08:55:38 PM
 #32

The links i sent you are about true quantum computers, not emulators, they work with close to subzero coolers. have a closer look at what they are offering.
There are also some shows in the informatics scene where companies from different countries shows their state of the art quantum computers.
For sure they are not miniaturized, and maybe this is why you think they are emulators, but i don't think you can emulate a quantum computer. Check also MIT quantum computer.

As far as I know, the only difference between a quantum computer and an intel or amd CPU is the bit size of the registers.

An intel/amd x86 CPU is limited to binary bits. Its registers have 64 bits and each bit can only represent two binary values 0's and 1's.

A quantum computer has a bitsize larger than binary. Rather than being limited to 0's and 1's, its registers can hold greater values.

1 quantum bit could represent values from 0 to 1,000,000,000 or greater. This gives it a much higher base information density in comparison to existing CPU's.

Higher data density should translate to greater computational capacity.

There are a lot of emulators available which emulate the functionality of quantum bits on normal intel/amd hardware.

Search for "qubit emulator" there are a lot of them.

I think a true quantum computer should represent a big jump in computational capacity over existing architecture.

If there is no real technical advantage, its probably an emulator of some type.


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February 28, 2017, 09:09:17 PM
 #33

We're at the early working stages of quantum annealing computers, which are probabilistic. They isomorphically map a problem (map coloring maybe) to a quantum system (100 SQUIDS in an array), set initial conditions, then let the system relax into it's ground state (probably). This is not a universal quantum computer with logic gates acting on qubits.
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