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Effect on quantum mechanics in which quantum systems are bound
the term quantum coupling does not have a universally accepted definition in scientific literature—unlike quantum entanglement or the coupling constant—it
Quantum_coupling
Coupling in quantum physics
In quantum mechanics, angular momentum coupling is the procedure of constructing eigenstates of total angular momentum out of eigenstates of separate angular
Angular_momentum_coupling
Two systems are coupled if they are interacting with each other
dimensionless coupling constant. In quantum electrodynamics, this value is known as the fine-structure constant α, approximately equal to 1/137. For quantum chromodynamics
Coupling_(physics)
Interaction between electronic and nuclear vibrational motion in a molecule
Vibronic coupling (also called nonadiabatic coupling or derivative coupling) in a molecule involves the interaction between electronic and nuclear vibrational
Vibronic_coupling
Parameter describing the strength of a force
of physics. Couplings arise naturally in a quantum field theory. A special role is played in relativistic quantum theories by couplings that are dimensionless;
Coupling_constant
cause a large rovibronic coupling. Afterglow plasma Vibronic coupling Jungen, Ch (2019-01-22). Molecular Applications of Quantum Defect Theory. Routledge
Rovibronic_coupling
Theoretical framework in physics
renormalized coupling constant, which changes with the energy scale, is also called the running coupling constant. The coupling constant g in quantum chromodynamics
Quantum_field_theory
First modular utility-scaled quantum computer system
to advance science. IBM has stated that their quantum coupling technology will allow multiple Quantum System Two units to connect together, to create
IBM_Q_System_Two
Topics referred to by the same term
resonance) Quantum coupling, when quantum states in one of the systems will cause an instantaneous change in all of the bound systems Azo coupling, often
Coupling_(disambiguation)
Field theory coupling of charge but not higher moments
In analytical mechanics and quantum field theory, minimal coupling refers to a coupling between fields which involves only the charge distribution and
Minimal_coupling
Principle of quantum mechanics
Quantum superposition is a fundamental principle of quantum mechanics that states that linear combinations of solutions to the Schrödinger equation are
Quantum_superposition
Quantum measurement phenomenon
distinguished from the quantum Zeno effect) is the watchdog effect, in which the time evolution of a system is affected by its continuous coupling to the environment
Quantum_Zeno_effect
Proposed quantum computer implementation
A trapped-ion quantum computer (TIQC) is one proposed approach to a large-scale quantum computer. Ions, or charged atomic particles, can be confined and
Trapped-ion_quantum_computer
Scalar–fermion interaction
In particle physics, the Yukawa coupling or Yukawa interaction, named after Hideki Yukawa, is an interaction between particles according to the Yukawa
Yukawa_coupling
Quantum mechanical phenomenon
In physics, quantum tunnelling, barrier penetration, or simply tunnelling is a quantum mechanical phenomenon in which an object such as an electron or
Quantum_tunnelling
Quantum computing implementation
quantum computing is a branch of quantum computing and solid-state physics that implements superconducting electronic circuits as qubits in a quantum
Superconducting quantum computing
Superconducting_quantum_computing
Concept in theoretical physics
running couplings cease to change. In particle physics, this treatment reflects the changes in the underlying physical laws (codified in a quantum field
Renormalization_group
Quantum field theory of electromagnetism
In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and
Quantum_electrodynamics
Topics referred to by the same term
angular momentum coupling in quantum mechanics Leakage inductance This disambiguation page lists articles associated with the title Coupling coefficient.
Coupling_coefficient
Statistical model in quantum mechanics of magnetic materials
interaction. For quantum mechanical reasons (see exchange interaction or Magnetism § Quantum-mechanical origin of magnetism), the dominant coupling between two
Quantum_Heisenberg_model
Loss of quantum coherence
irreversible. As with any coupling, entanglements are generated between the system and environment. These have the effect of sharing quantum information with—or
Quantum_decoherence
Nano-scale semiconductor particles
Meirav; Banin, Uri (16 December 2019). "Colloidal quantum dot molecules manifesting quantum coupling at room temperature". Nature Communications. 10 (1):
Quantum_dot
Quantum number parameterizing spin and angular momentum
In chemistry and quantum mechanics, the spin quantum number is a quantum number (designated s) that describes the intrinsic angular momentum (or spin
Spin_quantum_number
Mathematics of a particle physics model
The Standard Model of particle physics is a gauge quantum field theory containing the internal symmetries of the unitary product group SU(3) × SU(2) × U(1)
Mathematical formulation of the Standard Model
Mathematical_formulation_of_the_Standard_Model
Quantum device which stores energy
A quantum battery is a type of electric battery that uses the principles of quantum mechanics to store energy. They have the potential to be more efficient
Quantum_battery
Notation in quantum physics
atomic term symbols assume LS coupling (also known as Russell–Saunders coupling) in which the all-electron total quantum numbers for orbital (L), spin
Term_symbol
Theory of the strong nuclear interactions
In theoretical physics, quantum chromodynamics (QCD) is the study of the strong interaction between quarks mediated by gluons. Quarks are fundamental
Quantum_chromodynamics
Relativistic interaction in quantum physics
In quantum mechanics, the spin–orbit interaction (also called spin–orbit effect or spin–orbit coupling) is a relativistic interaction of a particle's
Spin–orbit_interaction
Means of studying the interaction of light and matter
avenues for quantum simulation, quantum error correction, and hybrid quantum systems. The strong, controllable coupling between artificial atoms and cavity
Circuit quantum electrodynamics
Circuit_quantum_electrodynamics
Computational benchmark
In quantum computing, quantum supremacy or quantum advantage is the goal of demonstrating that a programmable quantum computer can solve a problem that
Quantum_supremacy
Proposed state of matter in semiconductors
extra spin-orbit coupling terms that mix spin-up and spin-down electrons. Such a non-trivial state (exhibiting or not exhibiting a quantum spin Hall effect)
Quantum_spin_Hall_effect
Possible outcome of renormalization in physics
not possess the true quantum triviality. Analogously, the positive β {\displaystyle \beta } -function with the linear strong coupling asymptotics is established
Quantum_triviality
Function that encodes the dependence of a coupling parameter on the energy scale
physics, specifically quantum field theory, a beta function or Gell-Mann–Low function, β(g), encodes the dependence of a coupling parameter, g, on the
Beta_function_(physics)
Quantum number related to rotational symmetry
operators Principal quantum number Orbital angular momentum quantum number Magnetic quantum number Spin quantum number Angular momentum coupling Clebsch–Gordan
Total angular momentum quantum number
Total_angular_momentum_quantum_number
When the angular frequency of a system matches its natural vibrational frequency
In physics, rotational–vibrational coupling occurs when the rotation frequency of a system is close to or identical to a natural frequency of internal
Rotational–vibrational coupling
Rotational–vibrational_coupling
Quantum mechanical system that interacts with a quantum-mechanical environment
In physics, an open quantum system is a quantum mechanical system that interacts with an external quantum system, known as the environment or the bath
Open_quantum_system
Dissipation in quantum systems
not translationally invariant, in the sense that the coupling is different wherever the quantum particle is located. This gives rise to an unphysical
Quantum_dissipation
Formal constraint in quantum mechanics
the failure of LS coupling. J = L + S {\displaystyle J=L+S} is the total angular momentum, L {\displaystyle L} is the azimuthal quantum number, S {\displaystyle
Selection_rule
Symmetry between bosons and fermions
Supersymmetric quantum mechanics adds the SUSY superalgebra to quantum mechanics as opposed to quantum field theory. Supersymmetric quantum mechanics often
Supersymmetry
Quantum number related to the strong force
quarks within hadrons. In a quantum field theory, a coupling constant and a charge are different but related notions. The coupling constant sets the magnitude
Color_charge
Markovian quantum master equation for density matrices (mixed states)
Born, Markov, and rotating wave, respectively. The weak-coupling limit derivation assumes a quantum system with a finite number of degrees of freedom coupled
Lindbladian
Process in quantum computing
Quantum error correction (QEC) comprises a set of techniques used in quantum memory and quantum computing to protect quantum information from errors arising
Quantum_error_correction
Dimensionless number that quantifies the strength of the electromagnetic interaction
and the Bohr radius a0: re = αƛe = α2a0. In quantum electrodynamics, α is directly related to the coupling constant determining the strength of the interaction
Fine-structure_constant
Type of field where the net flow of electromagnetic energy is zero
quantum mechanics the wave function interaction may be discussed in terms of particles and described as quantum tunneling. Evanescent wave coupling is
Evanescent_field
Field theory of scalar fields
arising from quantum triviality. However, the question can only be answered non-perturbatively, since it involves strong coupling. A quantum field theory
Scalar_field_theory
Chemistry based on quantum physics
Quantum chemistry, or molecular quantum mechanics, is a branch of physical chemistry which applies quantum mechanics to chemical systems to predict physical
Quantum_chemistry
controlling the coupling strength of the components. This allows quantum experiments to verify that the phonons within the SAW Resonator are in quantum fock states
Quantum_acoustics
Model of quantum optics
different universality classes. The Dicke model is a quantum mechanical model that describes the coupling between a single-mode cavity and N {\displaystyle
Dicke_model
Different states of quantum systems
A quantum mechanical system or particle that is bound—that is, confined spatially—can only take on certain discrete values of energy, called energy levels
Energy_level
Quantum number denoting orbital angular momentum
In quantum mechanics, the azimuthal quantum number ℓ is a quantum number for an atomic orbital that determines its orbital angular momentum and describes
Azimuthal_quantum_number
concerned. However, all the good quantum numbers in the above case of the hydrogen atom (with negligible spin-orbit coupling), namely l , j , m l , m s ,
Good_quantum_number
Type of quantum computer
A topological quantum computer is a type of quantum computer. It utilizes anyons, a type of quasiparticle that occurs in two-dimensional systems. The
Topological_quantum_computer
Cryptography based on quantum mechanical phenomena
Quantum cryptography is the exploiting of quantum-mechanical properties such as quantum entanglement, measurement disturbance, no-cloning theorem, and
Quantum_cryptography
American physicist
physics and quantum field theory, with major contributions to the renormalization group theory of Fermi liquids, the fractional quantum Hall effect,
Ramamurti_Shankar
Attempt to find a consistent theory of quantum gravity
renormalizable quantum field theory, indeed with a UV critical surface of reduced dimensionality, coordinatized by only a few relevant couplings. Results of
Asymptotic_safety
Method in physics used to deal with infinities
the coupling of quantum chromodynamics and the weak isospin coupling of the electroweak force tend to decrease, and the weak hypercharge coupling of the
Renormalization
In particle physics, the history of quantum field theory starts with its creation by Paul Dirac, when he attempted to quantize the electromagnetic field
History of quantum field theory
History_of_quantum_field_theory
Application of quantum mechanics and chemistry to biology
states for quantum entities, such as excitons. Process coherence, on the other hand, refers to the degree of coupling between multiple quantum entities
Quantum_biology
five possible idealized modes of coupling. The last two rows are degenerate because they have the same good quantum numbers. In practice there are also
Hund's_cases
Quantum field theory
energies in quantum chromodynamics is not completely understood due to the difficulties of managing such a theory with a strong coupling. This may be
Yang–Mills_theory
Physical theory with fields invariant under the action of local "gauge" Lie groups
in the quantum theory; a phenomenon called an anomaly. Among the most well known are: The scale anomaly, which gives rise to a running coupling constant
Gauge_theory
In atomic physics, close coupling is a quantum mechanics method to calculate the multi-electronic atomic and molecular structure from fine structure to
Close_coupling
Theory of quantum gravity merging quantum mechanics and general relativity
(2013d). "New variables for classical and quantum gravity in all dimensions: IV. Matter coupling". Classical and Quantum Gravity. 30 (4) 045004. arXiv:1105.3706
Loop_quantum_gravity
Branch of molecular spectroscopy
theoretical treatment as for pure rotational spectroscopy gives the rotational quantum numbers, energy levels, and selection rules. In linear and spherical top
Rotational–vibrational spectroscopy
Rotational–vibrational_spectroscopy
Physics experiment in quantum mechanics
A delayed-choice quantum eraser experiment is an elaboration on the quantum eraser experiment that incorporates concepts considered in John Archibald Wheeler's
Delayed-choice_quantum_eraser
Type of recurrent neural network with random and non-trainable internal structure
especially in the quantum regime where measurement back-action must be taken into account. In this architecture, randomized coupling between lattice sites
Reservoir_computing
Phenomenon in quantum chromodynamics
In quantum chromodynamics (QCD), color confinement or infrared slavery, is the phenomenon that color-charged particles (such as quarks and gluons) cannot
Color_confinement
Effect in quantum mechanics where conductivity acquires quantized values
spin-orbit coupling to generate a finite Hall voltage even in the absence of an external magnetic field (hence called "anomalous"), the quantum anomalous
Quantum_anomalous_Hall_effect
Type of formal logic
statistical data. Quantum physics Black hole physics Hawking radiation Quantum computing Spintronics Quantum entanglement Quantum coupling Uncertainty principle
Paraconsistent_logic
Coupling constant divergence at high energies
is the momentum (or energy) scale at which the coupling constant (interaction strength) of a quantum field theory becomes infinite. Such a possibility
Landau_pole
Quantum physics-based metaheuristic for optimization problems
Quantum annealing (QA) is an optimization process for finding the global minimum of a given objective function over a given set of candidate solutions
Quantum_annealing
Electromagnetic effect in physics
The quantum Hall effect (or integer quantum Hall effect) is a quantized version of the Hall effect which is observed in two-dimensional electron systems
Quantum_Hall_effect
Theory of forces and subatomic particles
{\displaystyle Y_{\text{e}}} are 3 × 3 matrices of Yukawa couplings, with the mn term giving the coupling of the generations m and n, and h.c. means Hermitian
Standard_Model
Quantum chromodynamics on a lattice
Lattice QCD is a well-established non-perturbative approach to solving the quantum chromodynamics (QCD) theory of quarks and gluons. It is a lattice gauge
Lattice_QCD
Laboratory technique
spin greater than 1/2 because the spin quantum number has more than two possible values. For instance, coupling to deuterium (a spin-1 nucleus) splits
Nuclear magnetic resonance spectroscopy
Nuclear_magnetic_resonance_spectroscopy
Equivalence of two physical theories
single eleven-dimensional theory called M-theory. In quantum field theory and string theory, a coupling constant is a number that controls the strength of
S-duality
Theory of a quantum origin of consciousness
originates at the quantum level inside neurons (rather than being a product of neural connections). The mechanism is held to be a quantum process called
Orchestrated objective reduction
Orchestrated_objective_reduction
Property of computational resources needed
matter-geometry coupling in the quantum extremal surface prescription. These results suggest that non-local magic may be a resource not only for quantum computational
Magic_(quantum_information)
Device converting heat flow into usable work at the nanoscale
A quantum heat engine generates power from heat flow between hot and cold reservoirs, operating under the principles of quantum mechanics. Scovil and
Quantum_heat_engine
Quasiparticles arising from EM wave coupling
involve polaritons and could be useful in quantum computers. In 2024 researchers reported ultrastrong coupling of the PEPI layer in a Fabry-Pérot microcavity
Polariton
Quantum-mechanical version of computer memory
In quantum computing, a quantum memory is the quantum-mechanical version of ordinary computer memory. Whereas ordinary memory stores information as binary
Quantum_memory
Quantized unit of magnetic flux
quantization is therefore called magnetic flux quantum. The first to realize the importance of the flux quantum was Dirac in his publication on monopoles The
Magnetic_flux_quantum
timeline of quantum computing and communication. Erwin Schrödinger publishes a theorem setting the basis for quantum steering and the limits of quantum state
Timeline of quantum computing and communication
Timeline_of_quantum_computing_and_communication
Concept in quantum mechanics
The adiabatic theorem is a concept in quantum mechanics. Its original form, due to Max Born and Vladimir Fock (1928), was stated as follows: A physical
Adiabatic_theorem
Proposed semiconductor implementation of quantum computers
The spin qubit quantum computer is a quantum computer based on controlling the spin of charge carriers (electrons and electron holes) in semiconductor
Spin_qubit_quantum_computer
Superconducting qubit implementation
Measurement, control and coupling of transmons is performed by means of microwave resonators with techniques from circuit quantum electrodynamics also applicable
Transmon
Quantum mechanical model
The quantum harmonic oscillator is the quantum-mechanical analog of the classical harmonic oscillator. Because an arbitrary smooth potential can usually
Quantum_harmonic_oscillator
Model for the origin of the universe
Loop quantum cosmology – Finite, symmetry-reduced model of loop quantum gravity Loop quantum gravity – Theory of quantum gravity merging quantum mechanics
Big_Bounce
Intrinsic quantum property of particles
accurate models for the interaction with spin require relativistic quantum mechanics or quantum field theory. The existence of electron spin angular momentum
Spin_(physics)
Linear combination of Slater determinants
several CSFs; all have the same total quantum numbers for spin and spatial parts but differ in their intermediate couplings. A configuration state function
Configuration_state_function
Lowest possible energy of a quantum system or field
c}}\approx {\frac {1}{137}}} The fine-structure constant is the coupling constant of quantum electrodynamics (QED) determining the strength of the interaction
Zero-point_energy
Various physical phenomena
frictional effects or any other form of obvious coupling with its smooth empty environment, under quantum mechanics the surrounding region of vacuum is
Superradiance
In gate-based quantum computing, various sets of quantum logic gates are commonly used to express quantum operations. The following tables list several
List_of_quantum_logic_gates
Branch of physics
beam-splitter in quantum optics language). This can be used for state transfer between phonons and photons (which requires the so-called "strong coupling regime")
Cavity_optomechanics
Energy level splitting due to strong light-matter coupling
be observed in cavity quantum electrodynamics, exciton-polariton systems, circuit quantum electrodynamics, magnon-photon coupling, and plasmon-exciton
Rabi_splitting
Framework of superstring theory
the framework of quantum mechanics, a radically different formalism for describing physical phenomena based on probability. A quantum theory of gravity
M-theory
Type of quantum computer built out of Rydberg atoms
neutral atom quantum computer is a type of quantum computer built using Rydberg atoms; this type has many commonalities with trapped-ion quantum computers
Neutral_atom_quantum_computer
Mathematical description of quantum state
In quantum mechanics, a wave function (or wavefunction) is a mathematical description of the quantum state of an isolated quantum system. The most common
Wave_function
Model in quantum optics
quantum information processing and coherent control. Various experiments have demonstrated the dynamics of the Jaynes–Cummings model in the coupling of
Jaynes–Cummings_model
Relativistic quantum mechanical wave equation
of quantum mechanics and the theory of special relativity, and was the first theory to fully account for special relativity in the context of quantum mechanics
Dirac_equation
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