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Branch of particle physics concerning interactions between two photons
Two-photon physics, also called gamma–gamma physics, is a branch of particle physics that describes the interactions between two photons. Normally, beams
Two-photon_physics
Elementary particle or quantum of light
example, two photons may interact indirectly through virtual electron–positron pairs. Such photon–photon scattering (see two-photon physics), as well
Photon
Gas-like collection of photons
In physics, a photon gas is a gas-like collection of photons, which has many of the same properties of a conventional gas like hydrogen or neon – including
Photon_gas
Simultaneous absorption of two photons by a molecule
atomic physics, two-photon absorption (TPA or 2PA), also called two-photon excitation or non-linear absorption, is the simultaneous absorption of two photons
Two-photon_absorption
How to create matter from fundamentals particles to galaxies
particles precipitating out of colliding photon jets (see two-photon physics). Currently, two-photon physics studies creation of various fermion pairs
Matter_creation
Hypothetical force carrier particle connected to dark matter
Model of Particle Physics with a new abelian U(1) gauge symmetry. The corresponding new spin-1 gauge boson (i.e., the dark photon) can then couple very
Dark_photon
Creation of particle-antiparticle pair from a neutral boson
chamber, leading to the 1948 Nobel Prize in Physics. If the photon is near an atomic nucleus, the energy of a photon can be converted into an electron–positron
Pair_production
Study of electronic structures
Time-resolved two-photon photoelectron (2PPE) spectroscopy is a time-resolved spectroscopy technique which is used to study electronic structure and electronic
Two-photon photoelectron spectroscopy
Two-photon_photoelectron_spectroscopy
Phenomenon in particle physics
particle physics, the Primakoff effect, named after Henry Primakoff, is the resonant production of neutral pseudoscalar mesons by high-energy photons interacting
Primakoff_effect
Collision causing gamma ray emission
electron–positron creation, is a form of pair production governed by two-photon physics. Bhabha scattering Pair production Annihilation radiation Meitner–Hupfeld
Electron–positron annihilation
Electron–positron_annihilation
Computed tomography technique
Photon-counting computed tomography (PCCT) is a form of X-ray computed tomography (CT) in which X-rays are detected using a photon-counting detector (PCD)
Photon-counting computed tomography
Photon-counting_computed_tomography
Concept in quantum mechanics
concept in quantum mechanics that fundamental entities of the universe, like photons and electrons, exhibit particle or wave properties according to the experimental
Wave–particle_duality
Particle whose invariant mass is zero
particle physics, a massless particle is an elementary particle whose invariant mass is zero. At present the only confirmed massless particle is the photon. The
Massless_particle
Physics experiment
L. (1 March 1999). "Quantum effects in one-photon and two-photon interference". Reviews of Modern Physics. 71 (2): S274–S282. Bibcode:1999RvMPS..71..274M
Double-slit_experiment
Compact astronomical body
the photon sphere will decrease for increasing black hole charge. For non-extremal, charged, rotating black holes, there will always be two photon spheres
Black_hole
Fluorescence imaging technique
Two-photon excitation microscopy (TPEF or 2PEF) is a fluorescence imaging technique that is particularly well-suited to image scattering living tissue
Two-photon excitation microscopy
Two-photon_excitation_microscopy
Particle detector at Cornell University
substantial margin. CLEO has studied two-photon physics, where both an electron and positron radiate a photon. The two photons interact to produce either a vector
CLEO_(particle_detector)
Physics phenomenon
entangled photons. In 2022, the Nobel Prize in Physics was awarded to Aspect, Clauser, and Zeilinger "for experiments with entangled photons, establishing
Quantum_entanglement
Theory of forces and subatomic particles
The Standard Model of particle physics is the theory describing three of the four known fundamental forces (electromagnetic, weak and strong interactions
Standard_Model
Elementary particle involved with rest mass
needed] into two leptons (electrons or muons) and a photon ( ℓℓγ ), via virtual photon decay. This can happen in three ways: Higgs to virtual photon to ℓℓγ
Higgs_boson
Subatomic particle having no substructure
(not including dark matter), mostly photons and other massless force carriers. The Standard Model of particle physics contains 12 flavors of elementary
Elementary_particle
Concept in physics
Virtual photons are a fundamental concept in particle physics and quantum field theory that play a crucial role in describing the interactions between
Virtual_photon
Storage with three-dimensional resolution for information
Readout System in a Photochromic Polymer under Two-Photon Excitation". Japanese Journal of Applied Physics. 41 (8): 5160–5165. Bibcode:2002JaJAP..41.5160A
3D_optical_data_storage
Historical development of physics
Physics is a branch of science in which the primary objects of study are matter and energy. These topics were discussed across many cultures in ancient
History_of_physics
Technique in quantum optics
A single-photon source is a light source that emits light as single particles or photons. Single-photon sources are distinct from coherent light sources
Single-photon_source
Hypothetical particle
In physics, a magnetic photon is a hypothetical particle. It is a mixture of even and odd C-parity states and, unlike the normal photon, does not couple
Magnetic_photon
Hypothetical particle dual to the photon
In theoretical physics, the dual photon is a hypothetical elementary particle that is a dual of the photon under electric–magnetic duality which is predicted
Dual_photon
Subatomic particle; lightest meson
electrons with photons. The π0 was identified definitively at the University of California's cyclotron in 1949 by observing its decay into two photons. Later
Pion
Solid-state photodetector
A single-photon avalanche diode (SPAD), also called Geiger-mode avalanche photodiode (G-APD or GM-APD) is a solid-state photodetector within the same family
Single-photon_avalanche_diode
Professor of Experimental Physics
mathematician David Hilbert, also she released a book: "A review of Two Photons Physics". "Susan Catherine Cooper". inspirehep.net. Retrieved 28 October
Susan_Cooper_(physicist)
Function characterizing the interactions between photons and quarks
The photon structure function, in quantum field theory, describes the quark content of the photon. While the photon is a massless boson, through certain
Photon_structure_function
Type of single-photon detector
The superconducting nanowire single-photon detector (SNSPD) is a type of optical and near-infrared single-photon detector based on a current-biased superconducting
Superconducting nanowire single-photon detector
Superconducting_nanowire_single-photon_detector
Breast imaging technique
Photon-counting mammography was introduced commercially in 2003 and was the first widely available application of photon-counting detector technology in
Photon-counting_mammography
In quantum physics, type of particle that gives rise to forces between other particles
36.1801R. doi:10.1007/s10701-006-9081-9. S2CID 14008778. Kragh, Helge (2014). "Photon: New light on an old name". arXiv:1401.0293 [physics.hist-ph].
Force_carrier
Electron-positron production from two photons
process in which a positron–electron pair is created from the collision of two photons. It is the simplest mechanism by which pure light can be potentially
Breit–Wheeler_process
Technique for creating microscopic structures
wavelength. The main difference is the avoidance of photomasks. Instead, two-photon absorption is utilized to induce a change in the solubility of the resist
Multiphoton_lithography
Scattering of photons off charged particles
scattering of a high-frequency photon through an interaction with a charged particle, usually an electron. Specifically, when the photon interacts with a loosely
Compton_scattering
Class of subatomic particle
by treating photons as identical and indistinguishable particles, he independently derived Planck's law without relying on classical physics. He sent this
Boson
List compiling of particle accelerators used for particle physics experiments
physics experiments. Some early particle accelerators that more properly did nuclear physics, but existed prior to the separation of particle physics
List of accelerators in particle physics
List_of_accelerators_in_particle_physics
Collision of a particle and its antiparticle
particles, such as an electron colliding with a positron to produce two photons. The total energy and momentum of the initial pair are conserved in the
Annihilation
Study of matter-light interactions at small scales
Atomic, molecular, and optical physics (AMO) is the study of matter–matter and light–matter interactions, at the scale of one or a few atoms and energy
Atomic, molecular, and optical physics
Atomic,_molecular,_and_optical_physics
Emission of electrons when electromagnetic radiation hits a material
(1968). "The photoelectric effect without photons" (PDF). Coral Gables, FL: Center for Theoretical Physics, University of Miami. we understand the photoeffect
Photoelectric_effect
Interference effect of two photons
The Hong–Ou–Mandel effect is a two-photon interference effect in quantum optics that was demonstrated in 1987 by Chung Ki Hong (Korean: 홍정기), Zheyu Jeff
Hong–Ou–Mandel_effect
Type of quantum state
In physics, a squeezed coherent state is a quantum state that is usually described by two non-commuting observables having continuous spectra of eigenvalues
Squeezed_coherent_state
Elementary particle that mediates the strong force
difficult to analyze compared to quantum electrodynamics (QED) where the photon carries no electric charge. The term was coined by Murray Gell-Mann in 1962
Gluon
Elementary particle with negative charge
classical physics of a point particle electron having intrinsic angular momentum and magnetic moment can be explained by the formation of virtual photons in
Electron
Detectors in Nuclear Physics
Photon Multiplicity Detector (PMD) is a detector used in the measurement of the multiplicity and spatial distribution of photons produced in nucleus -
Photon_Multiplicity_Detector
Description of physical properties at the atomic and subatomic scale
Planck: the reluctant revolutionary". Physics World. Retrieved 12 December 2020. Stachel, John (2009). "Bohr and the Photon". Quantum Reality, Relativistic
Quantum_mechanics
Quantum mechanics thought experiment
predicted. The bomb tester takes advantage of two characteristics of elementary particles, such as photons or electrons: nonlocality and wave–particle duality
Elitzur–Vaidman_bomb_tester
Simultaneous absorption of two photons of differing energies by a molecule
In atomic physics, non-degenerate two-photon absorption (ND-TPA or ND-2PA) or two-color two-photon excitation is a type of two-photon absorption (TPA)
Non-degenerate two-photon absorption
Non-degenerate_two-photon_absorption
Kinetic energy released by ionizing radiation from uncharged particles per unit mass
Photon energy is transferred to matter in a two-step process. First, energy is transferred to charged particles in the medium through various photon interactions
Kerma_(physics)
Lord Kelvin in a speech identified two main issues in classical physics that represented "two clouds" for the physics of 20th century: the lack of evidence
List of unsolved problems in physics
List_of_unsolved_problems_in_physics
Hypothetical elementary particle
property, it is also considered a candidate for dark matter. Physics portal Dark photon Chameleon particle, a dark energy candidate that can also be converted
Axion
Quantum physics thought experiment
point of quantum theory: "It is wrong to attribute a tangibility to the photon in all its travel from the point of entry to its last instant of flight
Wheeler's delayed-choice experiment
Wheeler's_delayed-choice_experiment
Type of very low energy photons
In particle physics, soft photons are photons having photon energies much smaller than the energies of the particles participating in a particular scattering
Soft_photon
Study of subatomic particles and forces
Particle physics or high-energy physics is the study of fundamental particles and forces that constitute matter and radiation. The field also studies combinations
Particle_physics
Transient quantum fluctuation (physics)
attraction between two charges—can be thought of as resulting from the exchange of virtual photons between the charges. Virtual photons are the exchange
Virtual_particle
Penetrating form of electromagnetic radiation
most often decays into two photons. Many other hadrons and massive bosons also decay electromagnetically. High energy physics experiments, such as the
Gamma_ray
Particle smaller than an atom
particles. Particle physics and nuclear physics study these particles and how they interact. Most force-carrying particles such as photons or gluons are called
Subatomic_particle
spectroscopy Two-dimensional point vortex gas Two-phase flow Two-photon absorption Two-photon physics Two-state quantum system Two-stream instability Two New Sciences
Index_of_physics_articles_(T)
Experiment in quantum physics
trajectory of the incident photon. For the experiment, a collimated x-ray beam is directed to a scattering material in a gap between two counters. The counters
Bothe–Geiger coincidence experiment
Bothe–Geiger_coincidence_experiment
List of particles in matter including fermions and bosons
hypothesized molecular, atomic, and subatomic particles in particle physics, condensed matter physics and cosmology. Elementary particles are particles with no
List_of_particles
Quasiparticle of mechanical vibrations
sound waves, similar to photons as quantized light waves. The study of phonons is an important part of condensed matter physics. They play a major role
Phonon
Type of event in the early universe
emitting photons, but the physics of the two events differ. There were very many more photons than electrons. The interaction rate of the photons is given
Decoupling_(cosmology)
Quantum correlations related to wave-particle duality
physics, the Hanbury Brown and Twiss (HBT) effect is any of a variety of correlation and anti-correlation effects in the intensities received by two detectors
Hanbury Brown and Twiss effect
Hanbury_Brown_and_Twiss_effect
Bosons that mediate the weak interaction
Nobel Prize in Physics, a most unusual step for the conservative Nobel Foundation. The W+ , W− , and Z0 bosons, together with the photon (γ), comprise
W_and_Z_bosons
Systematic procedure of turning a classical theory into a quantum one
referring to photons as field "quanta" (for instance as light quanta). This procedure is basic to theories of atomic physics, chemistry, particle physics, nuclear
Quantization_(physics)
Physical constant in quantum mechanics
={\frac {h}{2\pi }}} , is commonly used in quantum physics equations. It relates the energy of a photon to its angular frequency, and the linear momentum
Planck_constant
Two-photon photovoltaic effect (TPP effect) is an energy collection method based on two-photon absorption (TPA). The TPP effect can be thought of as the
Two-photon photovoltaic effect
Two-photon_photovoltaic_effect
Subatomic particle
patterns of photons as electron neutrinos do. Electron neutrinos and tau neutrinos, in contrast to muon neutrinos, both cause sphere-shaped photon detection
Tau_neutrino
Scientific field of study
the field of physics is called a physicist. Physics is one of the oldest academic disciplines. Over much of the past two millennia, physics, chemistry,
Physics
Field of physics that studies the atom
Demtröder, W. (2006). Atoms, molecules and photons : an introduction to atomic-, molecular-, and quantum-physics. Berlin: Springer. ISBN 978-3-540-32346-4
Atomic_physics
Quantum mechanics experiment
mechanics experiment to demonstrate the violation of Bell's inequalities with photons using distant detectors. Its 1982 result allowed for further validation
Aspect's_experiment
Antiparticle of the electron
collision occurs at low energies, it results in the production of two or more photons. Positrons can be created by positron emission radioactive decay
Positron
Secure communication method
between two parties, Alice and Bob. In an entanglement-based scheme, Alice and Bob share pairs of entangled photons. This means the state of one photon is
Quantum_key_distribution
Physics experiment in quantum mechanics
one photon in a two-slit apparatus: even though it is one photon, it still somehow interacts with both slits. In the two diagrams in Fig. 1, photons are
Delayed-choice_quantum_eraser
Theorem in physics
W. (2002). "Entangled photons, nonlocality, and Bell inequalities in the undergraduate laboratory". American Journal of Physics. 70 (9): 903–910. arXiv:quant-ph/0205171
Bell's_theorem
Sub-field of quantum physics and optics
branch of atomic, molecular, and optical physics and quantum chemistry that studies the behavior of photons (individual quanta of light). It includes
Quantum_optics
Quantum explanation of electromagnetic polarization
superposition of the two. Equivalently, a photon can be described as having horizontal or vertical linear polarization, or a superposition of the two. The description
Photon_polarization
Quantum mechanical state change
its ground state) and emits a quantized amount of energy in the form of a photon into a field that was previously devoid of radiation.Lasers start via spontaneous
Spontaneous_emission
Inelastic scattering of photons by matter
In chemistry and physics, Raman scattering or the Raman effect (/ˈrɑːmən/) is the inelastic scattering of photons by matter, meaning that there is both
Raman_scattering
Frequency in atomic physics
atom absorbs two photons simultaneously and is promoted directly between the initial and final states. The beat note of the two photons must be resonant
Rabi_frequency
Particle scattering in which kinetic energy is not conserved
In chemistry, nuclear physics, and particle physics, inelastic scattering is a process in which the internal states of a particle or a system of particles
Inelastic_scattering
Particle with opposite charges
antiparticle of the positron is the electron. Some particles, such as the photon, are their own antiparticle. Otherwise, for each pair of antiparticle partners
Antiparticle
Physics experiment
to determine which of two slits a photon has passed through, the photon cannot interfere with itself. When a stream of photons is marked in this way,
Quantum_eraser_experiment
German–American physicist (1906–1972)
became interested in physics, and chose to pursue a Ph.D. instead. In her 1931 thesis, she worked out the theory of possible two-photon absorption by atoms
Maria_Goeppert_Mayer
French particle physicist
Higgs boson and contributed to various physics analyses, including jet fragmentation functions and two-photon physics.[citation needed] In 1992, he joined
Gautier_Hamel_de_Monchenault
even smaller particles such as quarks. Particle physics studies these smallest particles; nuclear physics studies atomic nuclei and their (immediate) constituents:
History_of_subatomic_physics
Branch of physics
carriers: phonons (lattice vibration waves), electrons, fluid particles, and photons. Heat is defined as thermal energy in transit resulting from a spatial
Heat_transfer_physics
Exotic particle made of an antiproton and positron
allowed two photon absorption. Antihydrogen atoms excited to the 2s state can then evolve in one of several ways: They can emit two photons and return
Antihydrogen
Production of light due to absorption of high-energy photons or particles
emits ultraviolet or visible light under excitation from high energy photons (X-rays or gamma rays) or energetic particles (such as electrons, alpha
Scintillation_(physics)
Type of subatomic particle
In particle physics, a fermion is a subatomic particle that follows Fermi–Dirac statistics. Fermions have a half-integer spin (spin 1/2, spin 3/2
Fermion
Atoms composed of exotic particles
However, it has been shown that kaonium emerges as a sharp resonance in photon-photon to meson-meson cross sections . The true analogs of positronium in the
Exotic_atom
Full range of electromagnetic radiation frequencies
system. In atomic and nuclear physics, the distinction between X-rays and gamma rays is based on sources: the photons generated from nuclear decay or
Electromagnetic_spectrum
Technique in attosecond physics
Reconstruction of attosecond beating by interference of two-photon transitions, more commonly known as RABBITT or RABBIT for short, is a widely used technique
Reconstruction of attosecond beating by interference of two-photon transitions
Reconstruction_of_attosecond_beating_by_interference_of_two-photon_transitions
Composite subatomic particle
In particle physics, a hadron is a composite subatomic particle made of two or more quarks that are held together by the strong nuclear force. Pronounced
Hadron
Physical model of propagating energy
wave–particle duality, behaving both as waves and as discrete particles called photons. Electromagnetic radiation is produced by accelerating charged particles
Electromagnetic_radiation
Something that has mass and volume
mass and volume. However it does not include massless particles such as photons, or other energy phenomena or waves such as light or heat. Matter exists
Matter
Quantum field theory of electromagnetism
The Theory of Photons and Electrons. Springer-Verlag. ISBN 978-0-387-07295-1. Kane, G. L. (1993). Modern Elementary Particle Physics. Westview Press
Quantum_electrodynamics
Hadron (subatomic particle) that is composed of three quarks
mesons". Physics Letters. 8 (3): 214–215. Bibcode:1964PhL.....8..214G. doi:10.1016/S0031-9163(64)92001-3. Pais, A. (1953). "On the Baryon-meson-photon System"
Baryon
TWO PHOTON-PHYSICS
TWO PHOTON-PHYSICS
Male
Native American
Native American Miwok name HONON means "bear."
Surname or Lastname
English
English : probably a reduced form of Thornton, or a habitational name from Thorton in Marnhull, Dorset, which has the same origin.
Male
Greek
(Φόβος) Greek name PHOBOS means "fear." In mythology, this is the name of a son of Ares. It is also the name of a moon of Mars.
Surname or Lastname
English (mainly central and northwestern England)
English (mainly central and northwestern England) : habitational name from Hooton in Cheshire, or from Hooton Levitt, Hooton Pagnell, or Hooton Roberts in South Yorkshire, all named with Old English hÅh ‘spur of land’ + tÅ«n ‘farmstead’.See Hooten.
Surname or Lastname
English
English : variant of Whitton.James Whiton of Hingham, Norfolk, England, came to Plymouth, MA, in 1635.
Surname or Lastname
English
English : topographic name for someone who lived by a postern gate, from Old French posterne; in some cases it would have been a metonymic occupational name for a gatekeeper.English : habitational name from Poston in Herefordshire or Poston in Shropshire, which is named with an Old English personal name Possa + þorn ‘thorn tree’.
Male
Greek
(Πλάτων) Greek name derived from the word platys, PLATON means "broad, flat; plateau."
Female
Greek
(Φωτινή) Greek name derived from the word phos, PHOTINE means "light."
Male
Greek
(ΠλοÏτων) Greek name derived from the word ploutos, PLOUTON means "wealth." In mythology, this is the name of a god of the underworld.Â
Surname or Lastname
English (chiefly West Midlands)
English (chiefly West Midlands) : habitational name from any of various places called Parton; most are named with Old English peretūn ‘pear orchard’ (a compound of pere ‘pear’ + tūn ‘enclosure’, with later change of -er- to -ar-, a regular phonetic development in Middle English). There are examples in Gloucestershire, two in Cumbria, and one in Kircudbrightshire, Scotland.
Male
Greek
(Φίλων) Greek name derived from the word phileo, PHILON means "to love."
Male
Greek
(Φώτιος) Greek name derived from the element phos, PHOTIOS means "light."
Surname or Lastname
English and Irish (County Donegal)
English and Irish (County Donegal) : variant spelling of Payton.
Surname or Lastname
English
English : habitational name from Penton Mewsey, Hampshire, which is named with Old English pening ‘penny’ + tūn ‘farmstead’, ‘settlement’, i.e. a farmstead paying a penny rent.
Male
Greek
Greek name PHAETON means "the shining one." In mythology, this is the name of one of the steeds of Aurora. The other is Abrax.
Surname or Lastname
English (mainly Cambridgeshire)
English (mainly Cambridgeshire) : habitational name from a place in Lincolnshire called Panton, from Old English pamp ‘hill’, ‘ridge’ or panne ‘pan’ + tūn ‘enclosure’, ‘settlement’.
Male
Greek
(φώλος) Greek name PHOLOS means "of the cave" or "of the den." In mythology, this is the name of a wise centaur. He was a friend of Herakles who accidentally poisoned him; he surrendered his immortality to be rid of the agony of the poison.
Surname or Lastname
English, northern Irish, and Scottish
English, northern Irish, and Scottish : from a pet form of the personal name Pate.The American general George Patton (1885–1945) was born in San Gabriel, CA, into a family with a long military tradition. His earliest American ancestor, Robert Patton, had emigrated from Scotland to VA c.1770.
Male
English
Variant spelling of English unisex Payton, PEYTON means "Pæga's settlement."
Surname or Lastname
English
English : habitational name from Pelton, a place in County Durham, named from an unattested Old English personal name Pēola + tūn ‘farmstead’, ‘settlement’.
TWO PHOTON-PHYSICS
TWO PHOTON-PHYSICS
TWO PHOTON-PHYSICS
TWO PHOTON-PHYSICS
TWO PHOTON-PHYSICS
TWO PHOTON-PHYSICS
TWO PHOTON-PHYSICS
a.
Divided from the border to the base into two distinct parts; bipartite.
a.
Employing two hands; as, the two-hand alphabet. See Dactylology.
a.
Having two lips.
pl.
of Phyton
pl.
of Photo
n.
The sum of one and one; the number next greater than one, and next less than three; two units or objects.
pl.
of Phylon
n.
A South American butterfly (Ithonia phono) having nearly transparent wings.
n.
One and one; twice one.
a.
Divided about half way from the border to the base into two segments; bifid.
n.
A chiton.
pl.
of Cornet-a-piston
a.
Measuring two feet; two feet long, thick, or wide; as, a two-foot rule.
n.
A handsome American butterfly (Euphydryas, / Melitaea, Phaeton). The upper side of the wings is black, with orange-red spots and marginal crescents, and several rows of cream-colored spots; -- called also Baltimore.
n.
A symbol representing two units, as 2, II., or ii.
n.
A contraction of Photograph.
n.
One of the parts which by their repetition make up a flowering plant, each being a single joint of a stem with its leaf or leaves; a phytomer.