Quantum computing won't completely replace classical computing - at least not in the foreseeable future - since many computational tasks won't benefit from it. In contrast, we can expect computers to perform hundreds of millions of times more quickly for the types of complex calculations it excels at.

In addition, quantum simulations may be able to replace laboratory experiments, reduce the cost of research, and even reduce the need for human and animal testing. From better analytics to faster trading, quantum computers have tremendous potential to benefit the financial sector.

Cryptocurrencies are secured by a technique called public key cryptography. ... This is the first quantum blockchain and will accelerate cryptocurrencies in the future. If progress continues, quantum computers will be able to crack public key cryptography, potentially posing a serious threat to the crypto world, where some currencies are worth hundreds of billions of dollars.

A quantum computer has an astronomical amount of computational power, and it will be able to harness this to create the next generation of blockchains. Not only quantum proof, but also quantum fast!