Quantum computer

 

Quantum computer

Ever heard of this term “quantum computer”, maybe in a sci-fi movie which would have shown that how with the help of quantum computer we can travel in time. Although this is not true what makes a quantum computer different from any other computer. Well this is quite a good question, let me tell you what you may already know “How classic computer works”.

How do classical computers work?

Well, in classical computers, semiconductors are used to make simple logic gates such as ADDITION, SUBTRACTION, and MULTIPLICATION although these operations do not seem complicated when there are millions of logic gates that can perform these operations you can probably do any kind of calculations in very little time. But as we move forward we are about to touch the physical barrier of transistors that we can use in a computer, to overcome this we are developing a quantum computer that uses quantum properties to do computational work. Even today we have developed some quantum computers for research purposes but they are way too expensive that even the rich can’t afford. Until they are super-rich. When you hear “super-rich” you may think of a guy named Bill gates. This means yes, Google has a quantum computer in their labs.

How fast can quantum computers be?

We do not know this yet, but for a quick comparison once, scientists designed mathematical the problem so complicated that it would 10,000 years for the fastest super computer to solve and the quantum computer owned by Google did it in just 200 seconds and now there are some articles saying that there is an algorithm if used then it can directly double the speed of the quantum computers. This shows that, we are actually at the initial stage of building a quantum computer.

How do quantum computers work?

In the quantum computer, we use quantum properties such as superposition and entanglement.

What is so special about entanglement? To know this, let us consider 2 coins and when we spun them together they are totally independent of each other. For example, if a coin comes out to be head second coin will be independent of the first coin that means it can be heads or tails.

But if we entangle them together then they become dependent on each other. Let me explain to you, if the coins are entangled and we spun them together if we stop them at the exact same time, we can observe that if a coin comes out to head then another coin will also come out to head whatever the distance between them but in quantum entanglement, we use quantum particles in the place of coins and to neglects wrong outcomes we use superposition.

Isn’t it fascinating?

When we can see quantum computers on our devices?

Probably after 20 or 30 years or maybe never, why am I saying that? Because we can almost do anything on computers we have today. And we are making quantum computers for research purposes which require a lot of processor performance and we have high internet speed and cloud technology through which we can access different computers, if we integrate quantum computers with cloud technology we can access quantum computer in our simple computers through this we all can access a quantum computer without actually having one.

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