A quantum register is a system comprising multiple qubits and is the quantum analog of the classical processor register.
Contents
Definition
An
The Hilbert space,
Quantum vs. Classical Register
First, there's a conceptual difference between the quantum and classical register. An
Moreover, while an
For example, consider a 2-bit-wide register. A classical register is able to store only one of the possible values represented by 2 bits -
If we consider 2 pure qubits in superpositions