Science Made Simple: What Is Quantum Computing?

Quantum Computer Cooling System
By U.S. Department of Energy April 21, 2021 DOE’s Lawrence Berkeley National Laboratory is using a sophisticated cooling system to keep qubits – the heart of quantum computers – cold enough for scientists to study them for use in quantum computers. Credit: Image courtesy of Lawrence Berkeley National Laboratory Quantum computing may revolutionize our ability to solve problems that are hard to address with even the largest supercomputers. Quantum computers consist of quantum bits, or “qubits.” These qubits play a similar role to the bits in today’s digital computers. However, the laws of quantum mechanics allow qubits to encode exponentially more information than bits. By manipulating information stored in these qubits, scientists can quickly produce high-quality solutions to difficult problems. Scientists have demonstrated these...