IBM Quantum is advanced quantum cloud technology – several real quantum computer devices and simulators available for use through the cloud – enabling Fortune 500 companies, startups, national research labs and academic institutions to run experiments and explore use cases.
Foundations of quantum technology
Quantum bits or qubits are quantum mechanical systems, like the state of a single atom or even a microscopic superconducting circuit. Classical computing works with bits, and a bit can only ever be 0 or 1. Qubits can be effectively both 0 and 1 at the same time.
This quality of qubits, called quantum superposition, together with the related phenomenon of entanglement, is where the remarkable increase in computing power begins.
As the number of qubits grow, superposition allows the quantum computer to represent exponentially increasing sets of numbers. To get a sense of what this means, imagine putting one grain of rice on the first square of a chessboard. Now double that number on each square and by the end of the board you’ll have 92 billion tonnes of rice.
Carefully choreographed sequences of quantum logic gates – the quantum software program – manipulate superposition and entanglement across the vast array of quantum information, to expand computational power.