A discrete quantity of energy proportional in magnitude to the frequency of the radiation it represents
The basic unit of information in a quantum computer
A nanoscale particle of semiconducting material that can be embedded in cells or organisms for various experimental purposes, such as labeling proteins
An abrupt transition of an electron, atom, or molecule from one quantum state to another, with the absorption or emission of a quantum
An energy level in a quantized system.
A three-valued logic for dealing with the observation and measurement of quantum phenomena (where simultaneous precise measurement of related variables is not necessarily possible), in which the distributive law of Boolean logic (that p and (q or r) implies (p and q) or (p and r)) does not hold.
An orbit (of an electron in an atom) defined by a set of quantum numbers.
A solid that exhibits quantum effects on the macroscopic scale.
A state of a quantized system that is described by a set of quantum numbers
= quantum sufficit.
A potential well in which electrons and holes are constrained to move in two dimensions only, typically by sandwiching an atomic layer of a semiconductor between layers of a material with a wider band gap, leading to a sharper density of states than in the bulk semiconductor; frequently attributive.
A wire-like piece of semiconductor in which the movement of electrons is restricted to one dimension, and quantum effects cause their energy of transverse motion (and hence the wire's resistance) to be quantized.
= quantum efficiency.
= Planck's constant.
An expert or specialist in quantum chemistry.
A number representing the degree to which an energy level of an atom with a single valence electron is displaced relative to the corresponding level of the hydrogen atom, being the amount by which the actual principal quantum number of the level exceeds the effective value of the number.
A theory that attempts to explain gravitational physics in terms of quantum mechanics
A liquid that exhibits quantum effects on the macroscopic scale.
Of or relating to quantum logic.
A reasonable sum of money to be paid for services rendered or work done when the amount due is not stipulated in a legally enforceable contract
A number that occurs in the theoretical expression for the value of some quantized property of a subatomic particle, atom, or molecule and can only have certain integral or half-integral values
A theory of matter and energy based on the concept of quanta, especially quantum mechanics
A state devoid of ordinary matter in which virtual particle–antiparticle pairs are continually created and annihilated through quantum fluctuations.
For what it is worth; with the understanding that the value or credibility of the statement, testimony, or piece of evidence under discussion may be diminished in consideration of mitigating factors.
= quantum valebant.
Of or relating to quantum chemistry.
The branch of physical chemistry concerned with the explanation of chemical phenomena in terms of quantum mechanics.
A computer that makes use of the quantum states of subatomic particles to store information
A condition resulting from, or forming part of, the application of quantum theory to a system; a condition that selects from the states allowed by classical physics those that are consistent with quantum theory.
Of or relating to quantum dynamics; quantum-mechanical.
= quantum mechanics.
The proportion of incident photons that are effective in causing the photodecomposition of a molecule, the emission of a photoelectron, or a similar photoeffect.
Relating to electronic properties as described or explained by quantum theory (rare);of or relating to quantum electronics.
The branch of mechanics that deals with the mathematical description of the motion and interaction of subatomic particles, incorporating the concepts of quantization of energy, wave-particle duality, the uncertainty principle, and the correspondence principle
A branch of complementary medicine that uses low-dosage electromagnetic radiation in the treatment, diagnosis, and prevention of disease
The statistics of the energy distribution of particles when the quantization of energy is taken into account.
To a sufficient extent; moderately, only as much as required. In later use chiefly Science.
An expert or specialist in quantum theory.
= quantum jump.
(An action to recover) the reasonable value of goods which have been provided or delivered without a legally enforceable contract stipulating a price.
The early form of quantum theory, based on classical mechanics, prior to the development of wave mechanics and matrix mechanics in the mid 1920s.
A quantum field theory in which the strong interaction is described in terms of an interaction between quarks mediated by gluons, both quarks and gluons being assigned a quantum number called “color.”
A technique for the encryption of transmitted information which uses quantum properties (typically the polarization or the entanglement of photons) to construct shared random cryptographic keys in such a way that any interception of the communication channel is revealed by the disturbance it causes to the quantum system.
Of or relating to quantum electrodynamics.
The branch of physics concerned with the practical consequences of the quantization of energy states and their interaction with electromagnetic radiation, and especially with the production or amplification of microwaves in crystals.
A short-lived variation in the amount of energy at a point in space occurring as a result of the uncertainty principle, which allows the law of the conservation of energy to be temporarily violated and very short-lived particles to be spontaneously created and annihilated.
Of or relating to quantum statistics.
A technique exploiting the entanglement of separate quantum systems in which information about a quantum state is transferred to a distant location so that a particle can effectively be recreated there, the original state being destroyed in the process.
As regards quantum theory, from the point of view of quantum theory.