In quantum mechanics, and especially quantum information theory, the purity of a normalized quantum state is a scalar defined as γ ≡ tr ⁡ ( ρ 2 ) {\displaystyle...

precious metals Nine (purity), an informal unit of purity Purity, the colorfulness of a light source Purity (quantum mechanics), a measure of correlation...

which can be explained by classical mechanics. Beginning out of attempts to extend the understanding of quantum mechanics, the theory has developed in several...

two-state (or two-level) quantum-mechanical system, one of the simplest quantum systems displaying the peculiarity of quantum mechanics. Examples include the...

Superdense coding Quantum complex network Quantum mechanics Introduction to quantum mechanics Quantum computer Quantum cryptography Quantum nonlocality Heisenberg...

construct a quantum information theory, which is a generalization of Shannon's theory, within the formalism of a generalized quantum mechanics of open systems...

In quantum mechanics, a density matrix (or density operator) is a matrix that describes an ensemble of physical systems as quantum states (even if the...

of quantum dots in biology is as donor fluorophores in Förster resonance energy transfer, where the large extinction coefficient and spectral purity of...

different name and treatment, a quantum reference frame still shares much of the notions with a reference frame in classical mechanics. It is associated to some...

theory of relativity, Einstein also made important contributions to quantum mechanics. His mass–energy equivalence formula E = mc2, which arises from special...