What is quantum computing and what is its scope in future?

Last Updated on January 14, 2023 by techtudum

Definition of quantum computing:

Quantum computing refers to the use of quantum mechanical phenomena like superposition, entanglement etc, to perform computing. Traditional computing works with bits. That is all information is processed and exchanged in 1, 0 /true-false signal which comprises a bit. That is bit is the unit of information in traditional computing. In quantum computer qubits are used instead.

Quantum computing is a computer science method which uses the properties of quantum physics to solve problems that would be too complex for today’s computers. The first application of quantum computing was in cryptography, but it has since been applied to other fields, including chemistry and materials science.

quantum computing

Quantum computing is still in its infancy and there are many challenges ahead, including the ability to build large-scale quantum computers with sufficient processing power. However, recent advances have made quantum computing much more practical than earlier methods; for example, some companies have already started selling commercial products based on this technology.

Scope of quantum computing:

As of today a limited success is made in the direction of quantum computing and very small number of qubits has been designed so far. But its application will revolutionise the field of computing. D-wave the pioneer in quantum computing is working with the Google to manufacture qubits. The latest news is that they have sold a quantum computer with more than 1000 qubits called 2X quantum computer to the US military or the NSA. Google will be making a pioneering statement on quantum computing on December, 8 this year. So keep waiting for that.

The most grand scope for quantum computer is cosmology, believe it or not for our universe is itself a quantum supercomputer, refer to the paper by Prof. S. Lloyd [1312.4455] The universe as quantum computer. So, advancement in the future can let us program the universe itself. For example, in 2020 entropy reversal using the quantum computing was possible, reversing entropy is reversal of time. Similarly, existence of time crystals was predicted using quantum computing in 2021.

Technological perspective for quantum computing:

The traditional computing technology follows the Moore’s law that states that the number of transistors in a microprocessor doubles approximately in every two years. This means the industry needs to dive into smaller and smaller fabrication methods. Currently, the Intel has already shipped its Skylake architecture based upon 14 nm process and is working on 10 nm process. But this process will soon end when it will hit the 1 nm process because from there on quantum tunnelling effect will start to dominate.

moore's law for quantum computing

Whereas the quantum computing will follow the analogous Rose’s law that states that the number of qubits have doubled every year with twice the speed that of the Moore’s law.
So far see the trend by D-Wave in qubit development.

number of qubits and future predictions for number of qubits in quantum computing

Future of quantum computing:

Quantum computing has a great potential for future. You perhaps noticed that present day information processing and storage needs increment of the bits registers more and more (eg. 32 bits, 64 bits) also information storages (10TB etc ) quantum computing will allow very large amount of information storage with a very small number of qubits. Qubit will help in solving very complex computation problems like turbulence, many body problems etc. Quantum computing will destroy any “secure” present day encryptions like RSA easily by its ability to determine very large prime numbers in short time (Shor’s algorithm is one example). Following is the hypothetical pathway for the future of quantum computing comprising the Rose’s law.

Rose's law in quantum computing

So, we can assume faster than universe computing by 2017 by the use of quantum computer.

Will quantum computing be a booming industry in 10 years?

Here is how much was spent on quantum computing worldwide in 2021:

Estimated Global Effort in quantum computing 2021

Average consumer probably won’t have a need to interact with a quantum computer – but they sure will rip the benefits of products made possible with quantum computing:

  • Pharma: new mechanisms of drug design hence cheaper medicine + finding cure for incurable diseases.
  • Material design: cheaper cars, airplanes, houses, pretty much everything man-made in your surroundings.
  • Economy: more optimal financial markets, better liquidity for companies who need capital (which is all companies)
  • Many other things: better battery design, better fertilisers for agriculture, better weather forecasting, etc.

I write about tech and games. Since my childhood i have been in love with gadgets and futuristic world hence my passion towards tech is something else.


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