The quantum bit or qubit is the elementary unit that can carry quantum information.

A qubit is a binary quantum state. The state can be well-determined (blue, orange) or undetermined (in superposition).

When two qubits are in a state where measuring one qubit can affect the result of measuring the other qubit,

Quantum computation consists of applying a sequence of elementary quantum operations to qubits.

Quantum circuits depict the sequence of operations applied to qubits in the course of a quantum computation.

Quantum communication takes place via standard optical fibers carrying photons.

Best poster prize at QIP 2023.

Interference is the key to understanding the difference between quantum computing and randomized computing.

What Einstein referred to as “spooky action at a distance” is a result of quantum entanglement.