What has quantum computing achieved?

What has quantum computing achieved?

In October 2019, Google AI Quantum, with the help of NASA, became the first to claim to have achieved quantum supremacy by performing calculations on the Sycamore quantum computer more than 3,000,000 times faster than they could be done on Summit, generally considered the world’s fastest computer.

How does quantum computing help chemistry?

Electronic structure theory in quantum chemistry involves calculating quantum states of electrons, and the forces that exist between the electrons and the nucleus of each atom that make up a given molecule. The forces determine the energies, geometries, and the transitioning states between stable molecular structures.

What can a quantum computer do today?

In theory, it can solve massive problems in quantum dynamics, material science, quantum chemistry, optimization problems, and sampling. It’s demonstrated the ability to break encryption using algorithms, like SHOR’s or Grover’s.

How far off is quantum computing?

Most current quantum computers have around a hundred qubits at most. That might increase to a thousand or so over the next few years, but quantum computers that are actually useful are probably at least a decade away.

What is quantum chemistry and how does it work?

Quantum chemistry studies the ground state of individual atoms and molecules, and the excited states, and transition states that occur during chemical reactions. On the calculations, quantum chemical studies use also semi-empirical and other methods based on quantum mechanical principles, and deal with time dependent problems.

What is theoretical quantum chemistry and computational chemistry?

Theoretical quantum chemistry, the workings of which also tend to fall under the category of computational chemistry, seeks to calculate the predictions of quantum theory as atoms and molecules can only have discrete energies.

What is the quantum approach to computer science?

The quantum approach is different. At its purest, quantum computing lets you model nature as it is; no approximations. In the oft-quoted words of Richard Feynman, “Nature isn’t classical, dammit, and if you want to make a simulation of nature, you’d better make it quantum mechanical.”

How do quantum particles behave?

Quantum particles can behave like particles, located in a single place; or they can act like waves, distributed all over space or in several places at once.

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