Searching huge databases, creating unbreakable ciphers are just two of the applications that quantum computers will do in seconds, and today's computers take a long time
In quantum computers, the data is not processed by hand. The source of the concept of the quantum computer is in the following diagnosis, which was put forward by the physicist Richard Feynman in 1981. When trying to calculate the predictions of quantum mechanics for large physical systems, it seems that a normal computer (built according to classical mechanics) does not can do this efficiently because of the exponential resources required to represent the wave function. However, nature itself performs these calculations, in an enclave, when the physical system exists in reality. From this, it seems that nature, which operates according to quantum mechanics, has an advantage in its calculation ability compared to a "classical" computer (that is, the physical Church-Turing thesis in its strong version is violated). If so, we may be able to build a new type of computer that utilizes quantum effects to perform calculations more efficiently. Such a computer will be able to calculate the predictions of quantum mechanics efficiently - and perhaps even perform other calculations more efficiently than any "classical" computer.
On this basis, precise models of quantum computers were defined whose operation is according to the laws of quantum mechanics, and which it seems that in principle can be realized in reality. Also, the calculation ability of these computational models was examined, and it was found that they are indeed stronger than the "classical" models in certain respects.
The quantum computer is based on storing qubits and operating on them, in analogy to a classical computer operating on bits. The difference between the two, and the additional power source of the quantum computer, comes from the superposition and entanglement phenomena that exist for qubits.
Electrons passing through transistors like in today's computers, but through atoms placed in a cage using a method known as quantum bits or - Q bit. "This is a new concept of computing" says Prof. Arthur Eckert from the University of Oxford in Great Britain. "She performs the calculations in a different way."
A bit is a basic unit of information represented by 1 or 0 in conventional electronic computers. A Q bit will also be represented as a 1 or a 0, but it can also be in both states at the same time - a feature known by physicists as superposition. This will allow a quantum computer to work on many problems and arrive at many solutions at the same time. "It's like a massive parallel processor installed on a single piece of software." Prof. Eckert said in a conversation with the BBC website.
According to him, this method has many advantages, especially for solving problems with a large amount of data and variables. "Using quantum computing, it will be possible to attack heavy problems in a time span of seconds, which in classical computers may take a huge amount of time" says Prof. David Avshalom from the University of California at St. Barbara. In February 2007, the Canadian company D-Wave systems claimed that it had succeeded in demonstrating work on a quantum computer. The company's CEO, Rabbi Martin, said that the demonstration represents "a significant step forward in solving commercial and scientific problems, which until now were considered unsolvable."
However, many in the quantum computing community remain skeptical, mainly because the company has released very little information about the machine. The display itself was not impressive either. "This is not what we understand as quantum computing" said Prof. Eckert. "The demonstration shown by the company members can also be solved using conventional computers." However, Prof. Eckert believes that quantum computing will eventually arrive. At least in the first stage they will not run commercial personal computing software but specific applications such as searching large databases, creating particularly strong ciphers or simulating atomic structures. The application of the real force will be close to the design of new materials or complex systems," he said.
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There is some confusion in the article: the main achievement of a quantum computer is cracking ciphers (for example RSA) and really not creating ciphers. In order to create a quantum cipher, there is no need for a quantum computer.
Regarding the construction of the computer: if you were asked how a laptop computer would be built before the transistor was invented, would you know the answer? The construction of the quantum computer is still in its infancy, and although hundreds of millions of dollars are invested in it, the path is still unclear, and there are many different directions (but all are in their infancy, or still in the embryonic stage)
Seriously, how do you build a quantum computer? Is it like a regular computer just a different operating system? I did not really understand
Thanks for the article. Well done for the effort and investment.
But unfortunately she is bad.
A qubit is a directional vector whose magnitude is 1.
Similar to the point on the XY graph whose distance from the beginning of the axes is 1.
Or according to Euler's notation: x+yi
and hence the difference from a normal gaze.
But in the end a wind came and blew them all away.
And the memory runs out.
In short, how do you build a quantum computer?
Society:
Wikipedia and Google are not tools intended for virtuous individuals. Anyone can use them. Those of you who are really interested can just search.
Here is an example of a Wikipedia search result:
http://en.wikipedia.org/wiki/Quantum_computing
I was hoping for more…
It's nice to point out that a quantum computer works with q-bits that take advantage of the superposition feature, but what exactly would software that uses this look like?
It would have been nice to see a theoretical example of how software that utilizes the capabilities of the quantum computer is written and works and an explanation of how it progresses in the quantum processor compared to today's processor. Perhaps some simple algorithm that will demonstrate, for example, how an operation that lasts for (O of 2 times n) in a normal processor, becomes (O of n) in a quantum processor (brute force for discovering encryption keys, for example).
Dear commenters,
Admittedly, lofty ideas such as human dignity, the culture of debate, acceptance of the other, tolerance, etc. all disappear at once when a clumsy commenter insists on giving public expression to his musings and by the way tramples the Hebrew language in his path. That's who I am, and again, I'm sorry if my style offended any of you.
Moshik, you must improve your spelling... you will be taken more seriously..
And besides, I also want to know exactly what the technological limitations are today for producing (even a tiny bit) one tiny one like this..
And here is a site for one of the two games I play (everyone gives a site and I'm allowed too! I created a rhyme and was left scorned): http://strikeracer.gpotato.com
Roy,
100 years is not exactly 100 years ago someone came up with the idea but the big discoveries have been made in recent years.
Regarding the theory, you know that there is a really, really, really accurate theory about a time machine, but the distance between idea and execution is great (I'm not saying it's impossible, but there is a great distance of knowledge and research and "black holes" that need to be completed and it's still not clear if it's possible in reality, like you I know four theories failed at the practical stage.
Regarding Eitan, believe me I was not offended, and the truth is that it also made me laugh and I was happy to receive a correction (the truth is that I am not an expert on this topic and I was happy to learn more) it's just a shame that he didn't justify his reaction.
Moshik,
Approximately 100 years is not new, and many discoveries and explanations have been made through it, so it is not a topic in diapers as you think...
Regarding quantum computation, there is already the theory, the problem is, according to what I understand, mainly technological, but we are working on it.
And give Eitan respect, I'm sure he was funny...
Um... I know it's not a lie, but it seems to me that it is quite related to your website.
I am participating in the Applied Materials project, which is a high school project, they teach us all kinds of things about computers, and today was this topic..
generation,
What else do you want to know? Maybe I can answer you.
Not really close to "everything I wanted to know" about quantum computers.
Strong
Ha ha ha
Funny enough, so let's explain a few things to her
1. Quantum physics is a physics that started to be researched not long ago, it is new and unknown, therefore a quantum computer is nice in theory, but the imaginary path to reality is far away.
2. I didn't say that this doesn't make sense, I just said that this topic is so far from being certain. There are things in physics that seem obvious, such as Newton's laws, but quantum physics.
post Scriptum
If you are already in the section of sites, carry it
http://www.shesh.co.il/ Maybe this will make you stop giving unrelated comments
Moshik,
I suggest that you start with sites with slightly clearer content.
For example: http://www.hop.co.il/
Successfully!
Sounds nice, but one thing:
For this to really work, we have to assume that there are indeed worlds that accept something that is still on the fence of leaving, and even if there is a way to communicate with them so that the computer can calculate it, in short, who is coming with me to a world where there are no wars lol