Quantum Computers - Advantages and Disadvantages

In this generation of supercomputers, quantum computers are believed to be a million times more powerful and are considered the future of technology. They can process data much faster than any classical computer. However, there are both advantages and disadvantages of quantum computing, which are mentioned below.

Advantages of Quantum Computers

The following are the advantages of quantum computers −

• Quantum computers can multitask by processing calculations simultaneously. They can solve the problems more quickly. They are highly secure. China has recently launched a satellite using quantum computing and stated it can’t be hacked.
• Quantum computers perform calculations faster than classical computers, particularly when modeling quantum processes and factoring large numbers. They can drastically decrease the time required to perform certain calculations.
• Quantum systems can be more accurately and effectively by quantum computers rather than classical computers. This is because quantum computers are based on quantum theory.
• Compared to classical algorithms, quantum algorithms are more accurate and efficiently solve complex problems.
• Quantum systems can be more accurately and effectively by quantum computers rather than classical computers. This is because quantum computers are based on quantum theory.
• Encryptions used by classical computers can be simply cracked by quantum computers. They also offer new possibilities for secure communication.

Disadvantages of Quantum Computers

The following are the disadvantages of quantum computers −

• Quantum computers are too expensive to build and maintain. This may limit worldwide deployment. They require very low temperatures to process, around negative 460 degrees Fahrenheit, which is considered the lowest temperature of all time.
• Developing a robust, scalable quantum computer is challenging and its size and stability are constrained.
• Classical computers make less noise compared to quantum computers, which often encounter faults. Correcting these errors in a quantum computer is a challenging task.
• There is a shortage of qualified professionals for developing and building quantum algorithms and software, which is essential as quantum computers are still in their initial phases and require more specialists.
• At present, quantum computers are not fully scalable, and there is no robust, large-scale quantum computer that has the ability to effectively solve complex problems.
• As the standards are missing in quantum computing it might be difficult to compare and integrate the different quantum computers.