What Exactly Is Quantum Computing?

At the end of this reading and other ones I did on the same topic I ended up with my understanding of this new breakthrough Quantum Computing (QC) technology. As far as I understood, in very simple words quantum computer it is not at its best  boosting computing performances in any context like sequential operations or deterministic operations like just browsing the internet or streaming a video. For this purpose is more performing a deterministic “traditional” multi-processor computer.

QC delivers all its incredible performance when it comes to pull together many conditions, n-complex problems,  to be all verified at the same time to find the optimal solution, e.g. np complex problem , breaking any RSA security code or anayze genome code.

So quantum computing will slowly grow side by side with  the traditional computing to address specific problems that cannot be managed in the traditional way for lack of time/computational resources.

Not clear where this new technology could lead alike the “Theory of relativity“: its another opportunity, more powerful and comprehensive way to read and interact with Universe’s laws.

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quantum-internet-

Quantum computers are nothing like the regular computers or even supercomputers. While the top supercomputers use extensive parallelism with numerous processing units to get its super speed, the Quantum computers work with the physics of quantum mechanics at its core.

How Does Quantum Computing Work?

[…]The quantum computers use atoms (quanta) as its physical system. Unlike in regular computing where the information is carried in either 0 or 1 bit, the quantum mechanics allows an atom to be in both 0 and 1 state simultaneously. This bit of data is called a qubit. ( Don’t hold your head just yet!)

bit-qubit

So, as per the theory, if there are equal number of qubits and the regular bits, then the qubits will hold twice the information, i.e. if there are n qubits in the supercomputer, then it will have 2^n different states.

[…]

As of today, many private players have entered into the competition to build a quantum computer, that would actually silence the critics. D-Wave has recently claimed to break the 1000 qubits barrier record. Other tech giants such as Google and IBM are advancing to develop their own quantum computers as well.

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