Friday 23 September 2011

Quantum Computing



One or the other time we all feel that our laptops and desktops are really slow. Whenever we need to index a very large database or even run a long CPP code we see the processor is taking too much time. To overcome this quantum computing was first proposed in early 1970’s.

It is basically based on quantum physics. It works in qubits or quantum bits instead of usual binary bits by using quantum physics properties of nuclei and atoms. The main function of quantum computing was to perform calculations faster and to solve solve some real life mysteries. We all know that computer only reads binary digits i.e. 0 and 1 but with incoming of quantum computers computer can take any values between 0 and 1. A usual computer does one problem at a time as it can take only one value as input but it is not the case with quantum computers. They can perform series of calculations in a  single go and making calculations exponentially faster. Quantum computers can also produce interference between the inputs. And while doing the calculations simultaneously and interfering one right answer is obtained. A quantum computer has a very high potential and is no match to the computer a normal man uses. A quantum computer can perform a huge amount of operations at once which cant even be calculated in no. by modern laptops with same speed the quantum computer solves it.

Quantum computing is not befitted with tasks like mailing and processing word files but is very efficient in performing calculations, cryptography and indexing of databases.

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