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Thanks to Quantum Cryptography, this same behavior can be used to perfectly secure communications from eavesdropping or interception, since the very act of intercepting the data would corrupt it, so that the person disrupting the particle cannot get usable information from it, and the recipient can be alerted to the eavesdropping attempt. Rooted in the nature of subatomic particles themselves, such a system would be completely unbreakable, no matter how advanced the computer trying to crack the encryption.
Two bits in your computer can be in four possible states (00, 01, 10, or 11), but only one of them at any time. This limits the computer to processing one input at a time (like trying one corridor in the maze).
In a quantum computer, two qubits can also represent the exact same four states (00, 01, 10, or 11). The difference is, because of superposition, the qubits can represent all four at the same time. That’s a bit like having four regular computers running side-by-side.
If you add more bits to a regular computer, it can still only deal with one state at a time. But as you add qubits, the power of your quantum computer grows exponentially. For the mathematically inclined, we can say that if you have “n” qubits, you can simultaneously represent 2n states.)
originally posted by: InTheLight
a reply to: dfnj2015
I found an article that explains what they will be good at, or used for. One interesting tidbit is that the data can not be intercepted.
Thanks to Quantum Cryptography, this same behavior can be used to perfectly secure communications from eavesdropping or interception, since the very act of intercepting the data would corrupt it, so that the person disrupting the particle cannot get usable information from it, and the recipient can be alerted to the eavesdropping attempt. Rooted in the nature of subatomic particles themselves, such a system would be completely unbreakable, no matter how advanced the computer trying to crack the encryption.
interestingengineering.com...
And that is why governments are investing heavily in it.
sciencebusiness.net...
originally posted by: hombero
Tears of nuclear hellfire are more likely I'll bet.
a reply to: InTheLight
your quote refers to quantum cryptography. Here are two separate wikipedia articles if you want to read about quantum cryptography and quantum computing and see what's different:
originally posted by: InTheLight
a reply to: dfnj2015
I found an article that explains what they will be good at, or used for. One interesting tidbit is that the data can not be intercepted.
"Thanks to Quantum Cryptography, this same behavior can be used to perfectly secure communications from eavesdropping or interception, since the very act of intercepting the data would corrupt it, so that the person disrupting the particle cannot get usable information from it, and the recipient can be alerted to the eavesdropping attempt. Rooted in the nature of subatomic particles themselves, such a system would be completely unbreakable, no matter how advanced the computer trying to crack the encryption."
interestingengineering.com...
And that is why governments are investing heavily in it.
sciencebusiness.net...
originally posted by: dfnj2015
a reply to: LookingAtMars
I've watch 10 videos on quantum computing technology and have yet found one person capable of explaining what they are doing.
Traditional computers, on the hand, follow the Von Neumann architecture, have a get-fetch-execute cycle, are mathematical model to represent called a Turing machine, and any process like adding two numbers can be explained step-by-step.
Every time, and I mean every time, I hear some ask the question please explain what quantum computing does the answer is, well, the solve certain classes of problems that can't be solved on traditional computer HW. They are way faster. bla, bla, bla...
Just what exactly are they faster at? If nobody knows what they are doing then how do they know they have arrived at the right answer? Any complex problem with many ambiguous answers can be solved by some algorithm. Heck, you give me any two 20 digit numbers and I can tell the product in 1 second. It may be right but in same base N arithmetic my answer is correct.
To quantum computer is just nutty. Non-deterministic computing is just impossible. Here's a good question. If you feed the same so called class of problem that can't be solved on traditional HW to the same quantum computer twice, will it produce the exact same result twice in a row? I bet you the answer is NO!!!
If the problem can't be done manual and explained how to solve it manually then HOW in the hell do they know they have the right answer after running the program????????
Quantum computing is the new form of Ju-Ju prayer beads.
originally posted by: Arbitrageur
your quote refers to quantum cryptography. Here are two separate wikipedia articles if you want to read about quantum cryptography and quantum computing and see what's different:
originally posted by: InTheLight
a reply to: dfnj2015
I found an article that explains what they will be good at, or used for. One interesting tidbit is that the data can not be intercepted.
"Thanks to Quantum Cryptography, this same behavior can be used to perfectly secure communications from eavesdropping or interception, since the very act of intercepting the data would corrupt it, so that the person disrupting the particle cannot get usable information from it, and the recipient can be alerted to the eavesdropping attempt. Rooted in the nature of subatomic particles themselves, such a system would be completely unbreakable, no matter how advanced the computer trying to crack the encryption."
interestingengineering.com...
And that is why governments are investing heavily in it.
sciencebusiness.net...
Quantum cryptography
Quantum computing
Quantum computing is more broad and can solve a wider array of problems whereas cryptography is a more narrow application of quantum computing.
I think there's definitely a market for quantum cryptography, but I think the market for quantum computing in more general applications is yet to be demonstrated.
Internally, Google has spent the last three years building a massive platform for artificial intelligence and now they’re unleashing it on the world. Although, Google would prefer you call it machine intelligence. They feel that the word artificial intelligence carries too many connotations, and fundamentally, they’re trying to create genuine intelligence—just in machines.
According to a theoretical paper published in the Annals of Physics, by Dr. Ovidiu Racorean from the General Direction of Information Technology in Bucharest, Romania, the geometry of spacetime around a rapidly spinning black hole (Kerr black hole) behaves like a quantum computer, and it can encode photons with quantum messages.
But despite the interest, implementing Grover’s algorithm has taken time because of the significant technical challenges involved. The first quantum computer capable of implementing it appeared in 1998, but the first scalable version didn’t appear until 2017, and even then it worked with only three qubits. So new ways to implement the algorithm are desperately needed.
Today Stéphane Guillet and colleagues at the University of Toulon in France say this may be easier than anybody expected. They say they have evidence that Grover’s search algorithm is a naturally occurring phenomenon. “We provide the first evidence that under certain conditions, electrons may naturally behave like a Grover search, looking for defects in a material,” they say.
That has obvious implications for quantum computing, but its real import may be much more profound. For some time, theorists have debated whether quantum search could explain one of the greatest mysteries about the origin of life. The idea that Grover searches occur in nature could finally solve the conundrum.
originally posted by: OccamsRazor04
a reply to: dfnj2015
This might be what you are looking for.
Two bits in your computer can be in four possible states (00, 01, 10, or 11), but only one of them at any time. This limits the computer to processing one input at a time (like trying one corridor in the maze).
In a quantum computer, two qubits can also represent the exact same four states (00, 01, 10, or 11). The difference is, because of superposition, the qubits can represent all four at the same time. That’s a bit like having four regular computers running side-by-side.
If you add more bits to a regular computer, it can still only deal with one state at a time. But as you add qubits, the power of your quantum computer grows exponentially. For the mathematically inclined, we can say that if you have “n” qubits, you can simultaneously represent 2n states.)
cosmosmagazine.com...
Think of it like a radio. You want to find a song you like, so you start flipping through the stations. You only ever check one station at once. When there are only 5 stations it won't take very long. Now imagine 100 stations, that's going to take a while. Now what if you have 10 million stations, imagine how long it will take checking one station at a time. You can make the time it takes to check faster, but you can never ever get over the 1 at a time limitation. That is a standard computer.
Now imagine a radio that can check every single station, all 10 million, at the same time. That's a quantum computer. The one Google is testing can check 9,007,199,254,740,992 different states at the same time.
Regular computer with 53 regular bits has 9,007,199,254,740,992 different states it can be, but it can only be 1 of those at any one time.
Quantum computer with 53 Q bits has 9,007,199,254,740,992 different states it can be, and it can be all of them at once.
As far as I know, QC is too noisy to do anything useful.