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57 relations: Absorption (electromagnetic radiation), Angular frequency, Atom, Band gap, Cavity quantum electrodynamics, Chemiluminescence, Classical electromagnetism, Crystal structure, Einstein coefficients, Electroluminescence, Emission spectrum, Energy, Excited state, Fermi's golden rule, Fine-structure constant, Fluorescence, Frequency, Ground state, Heat, Jaynes–Cummings model, Laser, Laser science, Luminescence, Molecule, Paul Dirac, Phase (waves), Phase space, Phonon, Phosphorescence, Photon, Photonic crystal, Planck constant, Purcell effect, QED vacuum, Quantum, Quantum dot, Quantum electrodynamics, Quantum field theory, Quantum fluctuation, Quantum mechanics, Quantum revival, Quantum state, Radioactive decay, Refractive index, Schrödinger equation, Semiconductor, Spectral line, Spectroscopy, Speed of light, Stimulated emission, ..., Subatomic particle, Transition dipole moment, Two-state quantum system, Vacuum, Vacuum permittivity, Vacuum Rabi oscillation, Zero-point energy. Expand index (7 more) »
Absorption (electromagnetic radiation)
In physics, absorption of electromagnetic radiation is the way in which the energy of a photon is taken up by matter, typically the electrons of an atom.
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Angular frequency
In physics, angular frequency ω (also referred to by the terms angular speed, radial frequency, circular frequency, orbital frequency, radian frequency, and pulsatance) is a scalar measure of rotation rate.
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Atom
An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element.
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Band gap
In solid-state physics, a band gap, also called an energy gap or bandgap, is an energy range in a solid where no electron states can exist.
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Cavity quantum electrodynamics
Cavity quantum electrodynamics (cavity QED) is the study of the interaction between light confined in a reflective cavity and atoms or other particles, under conditions where the quantum nature of light photons is significant.
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Chemiluminescence
Chemiluminescence (also chemoluminescence) is the emission of light (luminescence), as the result of a chemical reaction.
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Classical electromagnetism
Classical electromagnetism or classical electrodynamics is a branch of theoretical physics that studies the interactions between electric charges and currents using an extension of the classical Newtonian model.
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Crystal structure
In crystallography, crystal structure is a description of the ordered arrangement of atoms, ions or molecules in a crystalline material.
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Einstein coefficients
Einstein coefficients are mathematical quantities which are a measure of the probability of absorption or emission of light by an atom or molecule.
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Electroluminescence
Electroluminescence (EL) is an optical phenomenon and electrical phenomenon in which a material emits light in response to the passage of an electric current or to a strong electric field.
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Emission spectrum
The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state to a lower energy state.
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Energy
In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.
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Excited state
In quantum mechanics, an excited state of a system (such as an atom, molecule or nucleus) is any quantum state of the system that has a higher energy than the ground state (that is, more energy than the absolute minimum).
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Fermi's golden rule
In quantum physics, Fermi's golden rule is a formula that describes the transition rate (probability of transition per unit time) from one energy eigenstate of a quantum system into other energy eigenstates in a continuum, effected by a weak perturbation.
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Fine-structure constant
In physics, the fine-structure constant, also known as Sommerfeld's constant, commonly denoted (the Greek letter ''alpha''), is a fundamental physical constant characterizing the strength of the electromagnetic interaction between elementary charged particles.
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Fluorescence
Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation.
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Frequency
Frequency is the number of occurrences of a repeating event per unit of time.
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Ground state
The ground state of a quantum mechanical system is its lowest-energy state; the energy of the ground state is known as the zero-point energy of the system.
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Heat
In thermodynamics, heat is energy transferred from one system to another as a result of thermal interactions.
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Jaynes–Cummings model
The Jaynes–Cummings model (JCM) is a theoretical model in quantum optics.
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Laser
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.
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Laser science
Laser science or laser physics is a branch of optics that describes the theory and practice of lasers.
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Luminescence
Luminescence is emission of light by a substance not resulting from heat; it is thus a form of cold-body radiation.
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Molecule
A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.
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Paul Dirac
Paul Adrien Maurice Dirac (8 August 1902 – 20 October 1984) was an English theoretical physicist who is regarded as one of the most significant physicists of the 20th century.
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Phase (waves)
Phase is the position of a point in time (an instant) on a waveform cycle.
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Phase space
In dynamical system theory, a phase space is a space in which all possible states of a system are represented, with each possible state corresponding to one unique point in the phase space.
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Phonon
In physics, a phonon is a collective excitation in a periodic, elastic arrangement of atoms or molecules in condensed matter, like solids and some liquids.
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Phosphorescence
Phosphorescence is a type of photoluminescence related to fluorescence.
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Photon
The photon is a type of elementary particle, the quantum of the electromagnetic field including electromagnetic radiation such as light, and the force carrier for the electromagnetic force (even when static via virtual particles).
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Photonic crystal
A photonic crystal is a periodic optical nanostructure that affects the motion of photons in much the same way that ionic lattices affect electrons in solids.
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Planck constant
The Planck constant (denoted, also called Planck's constant) is a physical constant that is the quantum of action, central in quantum mechanics.
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Purcell effect
The Purcell effect is the enhancement of a quantum system's spontaneous emission rate by its environment.
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QED vacuum
The Quantum Electrodynamic Vacuum or QED vacuum is the field-theoretic vacuum of quantum electrodynamics.
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Quantum
In physics, a quantum (plural: quanta) is the minimum amount of any physical entity (physical property) involved in an interaction.
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Quantum dot
Quantum dots (QD) are very small semiconductor particles, only several nanometres in size, so small that their optical and electronic properties differ from those of larger particles.
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Quantum electrodynamics
In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics.
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Quantum field theory
In theoretical physics, quantum field theory (QFT) is the theoretical framework for constructing quantum mechanical models of subatomic particles in particle physics and quasiparticles in condensed matter physics.
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Quantum fluctuation
In quantum physics, a quantum fluctuation (or vacuum state fluctuation or vacuum fluctuation) is the temporary change in the amount of energy in a point in space, as explained in Werner Heisenberg's uncertainty principle.
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Quantum mechanics
Quantum mechanics (QM; also known as quantum physics, quantum theory, the wave mechanical model, or matrix mechanics), including quantum field theory, is a fundamental theory in physics which describes nature at the smallest scales of energy levels of atoms and subatomic particles.
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Quantum revival
In quantum mechanics, the quantum revival is a periodic recurrence of the quantum wave function from its original form during the time evolution either many times in space as the multiple scaled fractions in the form of the initial wave function (fractional revival) or approximately or exactly to its original form from the beginning (full revival).
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Quantum state
In quantum physics, quantum state refers to the state of an isolated quantum system.
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Radioactive decay
Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy (in terms of mass in its rest frame) by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, gamma ray, or electron in the case of internal conversion.
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Refractive index
In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium.
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Schrödinger equation
In quantum mechanics, the Schrödinger equation is a mathematical equation that describes the changes over time of a physical system in which quantum effects, such as wave–particle duality, are significant.
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Semiconductor
A semiconductor material has an electrical conductivity value falling between that of a conductor – such as copper, gold etc.
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Spectral line
A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum, resulting from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies.
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Spectroscopy
Spectroscopy is the study of the interaction between matter and electromagnetic radiation.
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Speed of light
The speed of light in vacuum, commonly denoted, is a universal physical constant important in many areas of physics.
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Stimulated emission
Stimulated emission is the process by which an incoming photon of a specific frequency can interact with an excited atomic electron (or other excited molecular state), causing it to drop to a lower energy level.
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Subatomic particle
In the physical sciences, subatomic particles are particles much smaller than atoms.
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Transition dipole moment
The transition dipole moment or transition moment, usually denoted \scriptstyle for a transition between an initial state, \scriptstyle, and a final state, \scriptstyle, is the electric dipole moment associated with the transition between the two states.
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Two-state quantum system
In quantum mechanics, a two-state system (also known as a two-level system) is a quantum system that can exist in any quantum superposition of two independent (physically distinguishable) quantum states.
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Vacuum
Vacuum is space devoid of matter.
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Vacuum permittivity
The physical constant (pronounced as "epsilon nought"), commonly called the vacuum permittivity, permittivity of free space or electric constant, is an ideal, (baseline) physical constant, which is the value of the absolute dielectric permittivity of classical vacuum.
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Vacuum Rabi oscillation
A vacuum Rabi oscillation is a damped oscillation of an initially excited atom coupled to an electromagnetic resonator or cavity in which the atom alternately emits photon(s) into a single-mode electromagnetic cavity and reabsorbs them.
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Zero-point energy
Zero-point energy (ZPE) or ground state energy is the lowest possible energy that a quantum mechanical system may have.
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Redirects here:
Radiative rate, Spontaneous Emission.
References
[1] https://en.wikipedia.org/wiki/Spontaneous_emission
