Glossary of terminology and terms
No-cloning theorem
The no-cloning theorem states that it is impossible to create an identical copy of an arbitrary unknown quantum state.
State space
A state space is the set of all possible states of a system.
Quantum decoherence
Quantum decoherence is the loss of quantum coherence. Which is to say a quantum state returns to a classical state.
Quantum entanglement
Quantum entanglement is when two or more particles are generated, interacting, or sharing spatial proximity in such a way that the quantum state of each particle cannot be described independently from the others.
Quantum system
A quantum system, such as a quantum clock, whose primary function is to generate a quantum state and utilise this state for a purpose (E.g. magnetic field sensing).
Systems which utilise quantum technologies
These are systems which are designed to perform a function and merely use a quantum system as a subsystem to achieve the overall objective (e.g. a navigation system).
Qubit
A qubit is the basic unit of quantum information and can exist in superpositions of the |0⟩ and |1⟩ states. Qubits are analogous to classical bits used in classical computers.
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