Atom photons. Medical search. Frequent questions

However, the transfer of the photon momentum to electrons predicted by theoretic calculations is so tiny that it was previously not possible to measure it. (scitechdaily.com)
Saying photons are energy is like saying electrons are charge. (physicsforums.com)
If photons have momentum, when an electron captures a photon, does it make any difference in the electrons energy or path after capture depending on the direction the photon was traveling before it was captured by the electron? (physicsforums.com)
The electrons in a semiconductor can absorb photons of light having energies greater than the band gap energy, and this property forms the basis of devices such as photovoltaic cells. (sciencedaily.com)
Graphene has another attractive property as a photon absorber: the electrons which absorb the energy are able to retain it efficiently, rather than losing energy to vibrations of the atoms of the material. (sciencedaily.com)
Quarks incur and push away by exchanging gluons as electrons loosen photons in the electromagnetic fields. (astronoo.com)
Photons, electrons and atoms, oh my! (trnmag.com)
Visible light photons and X-ray photons are both produced by the movement of electrons in atoms . (howstuffworks.com)
If not, the photon can't shift electrons between orbitals. (howstuffworks.com)
Radio waves don't have enough energy to move electrons between orbitals in larger atoms, so they pass through most stuff. (howstuffworks.com)
Our motivation for this is to create and study hybridized quantum states between electrons and photons. (lu.se)
It dissolves the "glue" between atoms, thereby affecting the electrons. (lu.se)
The electrons filling the core hole that is generated during the absorption process emit x-ray photons whose energy can be analyzed. (lu.se)

The device is a further development of the COLTRIMS principle that was invented in Frankfurt and has meanwhile spread across the world: it consists of ionizing individual atoms, or breaking up molecules, and then precisely determining the momentum of the particles. (scitechdaily.com)
This wave nature of matter could be used to create a tractor beam that could reel in atoms or molecules, a new study proposes. (sciencenews.org)
A new kind of tractor beam could use a beam of particles to reel in atoms or molecules, physicists propose in the May 5 Physical Review Letters . (sciencenews.org)
Between the reflective surfaces there were dissolved pigment molecules with which the photons collided periodically. (nanowerk.com)
In these collisions, the molecules 'swallowed' the photons and then 'spit' them out again. (nanowerk.com)
Because these photons are emitted by relatively cool interstellar molecules, submillimeter astronomy studies the early stages of formation of stars and galaxies by observing these interstellar clouds of molecules. (sciencedaily.com)
McClean and Drevniok have mounted the tip used for STM onto a sharp tuning fork to create what they call a qPlus sensor that allows for the chance to "feel" the presence of molecules on the surface and to differentiate molecules from the similar-looking missing silicon atoms . (phys.org)
Einstein used 2 principles of physics as the basis for his discovery: (1) Light travels in packets of energy known as photons, and (2) most atoms or molecules exist naturally in a ground or low-energy state (E 0 ). (medscape.com)
The populations of atoms or molecules that become excited are the lasing medium. (medscape.com)
Some photons are emitted spontaneously from the excited atoms or molecules that cause light to travel in all directions within the laser cavity. (medscape.com)
make these clusters ideal as model systems to understand how the primary sequence of processes is affected by surrounding atoms or molecules. (lu.se)
Quantum optics describes how individual quanta of light, the photons, interact with atoms, molecules and larger pieces of matter. (lu.se)
Attoscience is the study of electron dynamics in quantum systems, such as atoms, molecules and solids, on a time scale down to a few attoseconds (1 as = 10^-18 s). (lu.se)
Most of the information we get from different plasma, in space and in the laboratory, reaches us via electromagnetic radiation - light - from atoms, ions and molecules. (lu.se)
Examples of studies range from in-situ investigation of the magnetism of isolated atoms or single molecules, to the properties of oxide materials in thin-film or bulk crystal form, topological insulators, or hybrid ferromagnetic -2D materials such as Graphene. (lu.se)

Most radionuclides release high-energy photons as gamma rays but PET uses radionuclides that release particles called positrons. (msdmanuals.com)
The HHG process can be understood as a 3-step process: 1) the electron tunnels from the atom due to the strong laser field, 2) the electron propagates in the continuum driven by the laser field and 3) the electron recombines with the atom and emits short bursts of high-energy photons. (lu.se)

Scheme for heralded entanglement generation in a large atomic ensemble by single-photon detection. (phys.org)
Scientists have so far been able to entangle large groups of atoms, although most attempts have only generated entanglement between pairs in a group. (phys.org)
Only one team has successfully entangled 100 atoms-the largest mutual entanglement to date, and only a small fraction of the whole atomic ensemble. (phys.org)
Now Vuletic and his colleagues have successfully created a mutual entanglement among 3,000 atoms, virtually all the atoms in the ensemble, using very weak laser light-down to pulses containing a single photon. (phys.org)
Until now, the entanglement of photons usually took place in special, non-linear crystals. (mpg.de)
This allows a single-atom single-photon switch to be built, that can distribute entanglement over large distances as a node in a quantum network. (lu.se)

Physicists from MIT and the University of Belgrade have developed a new technique that can successfully entangle 3,000 atoms using only a single photon. (phys.org)
Physicists at the Max Planck Institute of Quantum Optics have managed to entangle more than a dozen photons efficiently and in a defined way. (mpg.de)
A team of physicists at the Max Planck Institute of Quantum Optics in Garching has now for the very first time demonstrated this task with photons emitted by a single atom. (mpg.de)
The question of which reaction partner (electron or atom nucleus) conserves the momentum of the photon has occupied physicists for over 30 years. (scitechdaily.com)
Nanowerk News ) Physicists from the University of Bonn have developed a completely new source of light, a so-called Bose-Einstein condensate consisting of photons. (nanowerk.com)
The Bonn physicists then increased the quantity of photons between the mirrors by exciting the pigment solution using a laser. (nanowerk.com)

Completing the series allows you to pursue advanced study and research in cold atoms, as well as in specialized topics in condensed matter physics. (classcentral.com)

We propose a superradiant laser based on two-photon Raman transition of caesium-133 atoms which collectively emit photons on an ultra narrow transition into the mode of a low Q resonator known as optical bad-cavity regime. (arxiv.org)
Different lasing mediums (which can be solid, liquid, or gas) emit photons in different wavelengths of the EM spectrum. (medscape.com)

Photon counting detectors are showing great potential for pre-clinical and clinical applications as outlined by [ 13 - 16 ]. (frontiersin.org)
Most photon detectors are based on semiconductors. (sciencedaily.com)

The researchers say the technique provides a realistic method to generate large ensembles of entangled atoms , which are key components for realizing more-precise atomic clocks. (phys.org)
Today's best atomic clocks are based on the natural oscillations within a cloud of trapped atoms. (phys.org)
The accuracy of atomic clocks improves as more and more atoms oscillate in a cloud. (phys.org)
Conventional atomic clocks' precision is proportional to the square root of the number of atoms: For example, a clock with nine times more atoms would only be three times as accurate. (phys.org)
Interfacing thermal atomic vapors with Nano-photonics on a chip provides a unique testbed for manipulating the interaction of atoms with photons and other atoms on a miniaturized scale. (aps.org)
The slot mode constrains the probed atomic density to an effective one-dimension hence leading to geometry dependent atom-light and atom-atom interactions. (aps.org)
It is devoted to the study of the interactions between photons and atoms in atomic and molecular physics, quantum optics, and laser physics. (freepdfbook.com)
We consider few-photon ionization of atomic lithium by linearly polarized femtosecond laser pulses and demonstrate that asymmetries of the electron angular distribution can occur for initially polarized (2p, m=+1) target atoms. (mst.edu)
Atomic Mass-- The mass of a neutral atom of a nuclide, usually expressed in terms of 'atomic mass units. (cdc.gov)
Atomic Mass Number-- The total number of nucleons (neutron plus protons) in the nucleus of an atom. (cdc.gov)
Atomic Number-- The number of protons in the nucleus of an atom. (cdc.gov)
Photoionization of an atomic electron is followed by electronic relaxation which results in a migration of charge within the atom. (lu.se)
Weakly bound, atomic and molecular, clusters have been the subject of many studies to investigate structures, dynamics and energetics of nano-scale objects, with the goal to understand the evolution of their properties from isolated atoms to the bulk solid. (lu.se)

In Lund we focus on Multiconfigurational method and the main part is concerned with solving the Dirac Equation for complex atoms and ions. (lu.se)
This protein uses energy from a molecule called adenosine triphosphate (ATP) to transport charged atoms (ions) into and out of cells. (medlineplus.gov)

Photons are massless, so they always move at the speed of light in vacuum, 299792458 m/s (or about 186,282 mi/s). (wikipedia.org)
A photon is massless, has no electric charge, and is a stable particle. (wikipedia.org)
if photons are massless, then the constant in the Lorentz-transformation is the speed of light. (kateva.org)
Without the Higgs, these particles would be massless, like photons. (newscientist.com)
Some particles, such as photons, do not interact with the field at all and remain massless. (newscientist.com)
In this "electroweak" theory, electromagnetic forces arise by the long-range exchange of massless photons, and the short-range weak force is due to the exchange of massive particles called W and Z particles, predicted in the 1960s and discovered in the 1980s at CERN, the European particle physics laboratory near Geneva, Switzerland, which is now the home of the LHC. (newscientist.com)

The beam is tuned to just below the frequency of an absorption line, so only atoms moving towards the source of the beam will absorb, and therefore slow down. (physicsforums.com)
He added that emission and absorption of light by the atom occurs by quantum jumps between these discrete orbits. (ens.fr)
Atoms in their ground state undergo absorption of photons of light energy. (medscape.com)
Photoinduced processes in complex systems can be modeled as a sequence of events initiated by the absorption of a photon. (lu.se)
In x-ray absorption spectroscopy (XAS) the energy of the absorbed photon raises an electron from a deeply bound state into unoccupied bound states or it gains enough energy to escape the atom. (lu.se)
If the energy of the the photon is sufficient to overcome the binding potential the electron the absorption probability is influenced by a electron scattering process from the local environment of the surrounding atoms. (lu.se)
Soft X ray transmission microscopy with circularly polarized photons tuned at specific resonant energies allows to image magnetic textures by exploiting the dichroic absorption contrast which depends on the angle of the magnetization and X-ray beam. (lu.se)

Using an additional control pulse, the researchers also specifically triggered the emission of a photon that is entangled with the quantum state of the atom. (mpg.de)
Title of program: BREMSS Catalogue Id: ABTF_v1_0 Nature of problem During a collision event, the coupling of the electron-atom system with the empty modes of the electromagnetic field can lead to the spontaneous emission of bremsstrahlung radiation. (mendeley.com)
The decay of silver and hafnium atoms with a vacancy in the K shell by the emission of photon pairs which continuously share the transition energy was studied. (unizg.hr)
For stimulated emission to occur, more atoms must exist in the excited state than in the ground state, a situation known as a population inversion. (medscape.com)
Optical cavities, such as the Fabry-Perot cavity, are among other things known for its use in lasers to amplify the stimulated emission from atoms. (lu.se)
However, when the cavity is made sufficiently small and highly reflective, the theory of quantum electrodynamics (QED) describes how the cavity can also amplify the spontaneous emission of atoms. (lu.se)
The fine structure of this x-ray emission (XES) give detailed information on the density of filled states and can be used due to the influence of spin-orbit coupling to track the oxidation and total spin state of the emitting atom. (lu.se)

Employing two-photon excitation, including a telecom wavelength, we observed that the guided mode transmission spectrum gets modified when the photonic mode is coupled to rubidium atoms through its evanescent tail. (aps.org)
A single rubidium atom is trapped in an optical resonator consisting of two highly reflective mirrors. (mpg.de)
To do this, the Max Planck researchers placed a rubidium atom at the center of an optical cavity - a kind of echo chamber for electromagnetic waves. (mpg.de)
A single rubidium atom is trapped between the conically shaped mirrors inside the holder. (mpg.de)
By cooling Rubidium atoms deeply and concentrating a sufficient number of them in a compact space, they suddenly become indistinguishable. (nanowerk.com)

The experiments of cavity quantum electrodynamics we perform at Laboratoire Kastler-Brossel on circular Rydberg atoms, which interact with photons trapped in superconducting cavities, illustrate straightforwardly the ideas of Bohr and Einstein. (ens.fr)

Photons, the particles of light, are particularly well suited for this because they are robust by nature and easy to manipulate,' says Philip Thomas, a doctoral student at the Max Planck Institute of Quantum Optics (MPQ) in Garching near Munich. (mpg.de)
Today, when, say, Grinding Gear Games, makes a game sale on the other side of the world, photons, tiny particles of light, race to their new home in a fraction of a second. (billbennett.co.nz)

Repeated excitation of the atom causes several entangled single photons to be emitted in succession. (mpg.de)

Abstract We propose two distinct fast routines to evaluate the cross sections of the one-photon processes occuring in the course of fast electron-hydrogen atom collisions: free-free transitions observed in the presence of an external laser source and bremsstrahlung. (mendeley.com)
These photons become amplified by collisions with excited atoms in the lasing medium that then release photons in exactly the same direction, phase, and wavelength. (medscape.com)

The researchers first cooled a cloud of atoms, then trapped them in a laser trap, and sent a weak laser pulse through the cloud. (phys.org)
This means: in principle, each control pulse actually delivers a photon with the desired properties. (mpg.de)
Practical single-photon switching, namely controlling the direction of one single-photon pulse with a control field that is another single-photon pulse, has not been achieved experimentally to date. (technion.ac.il)
When numerous photons from a laser pulse bombard an argon atom, they ionize it. (scitechdaily.com)
We present a demonstration of two-photon double ionization of neon using an intense extreme ultraviolet (XUV) attosecond pulse train (APT) in a photon energy regime where both direct and sequential mechanisms are allowed. (lu.se)

Single InAs/GaAs quantum dots (QDs) are one of the most promising solid-state quantum emitters for applications such as quantum light generation and single-photon level nonlinear optics 1 . (nature.com)
To support the massive upgrade of the Advanced Photon Source (APS) facility at the U.S. Department of Energy's (DOE) Argonne National Laboratory, the APS optics team has begun the monumental task of building a state-of-the-art optical system - essentially from scratch. (photonics.com)
We will discuss the nessecary parts of a laser (resonators and amplifiers), the physics behind the function (interaction between photons and atoms) and the specific properties which defines a laser (beam optics). (lu.se)

Now, Imagine there is a photon with the same wavelength. (justaaa.com)
Einstein also discovered that, when a photon of light energy of the same wavelength strikes an excited atom (E n ), that photon and the photon of light that is released are discharged simultaneously and will therefore be identical in frequency and phase. (medscape.com)
These include coherence (the photons are all in phase), collimation (they travel parallel with no divergence), and monochromaticity (they all have the same wavelength and, therefore, the same color if within the visible light spectrum). (medscape.com)

In this physics course, you will be introduced to the QED Hamiltonian (Quantum ElectroDynamics), and learn how to construct diagrams for light-atom interactions. (classcentral.com)
With laser light of a certain frequency, the state of the atom could be precisely addressed. (mpg.de)
To the best of our knowledge, the 14 interconnected light particles are the largest number of entangled photons that have been generated in the laboratory so far,' Thomas emphasises. (mpg.de)
Atom-Photon Interactions: Basic Processes and Applications allows the reader to master various aspects of the physics of the interaction between light and matter. (freepdfbook.com)
Albert Einstein received the Nobel Prize for explaining the photoelectric effect: in its most intuitive form, a single atom is irradiated with light. (scitechdaily.com)
According to Einstein, light consists of particles (photons) that transfer only quantized energy to the electron of the atom. (scitechdaily.com)
A photon (from Ancient Greek φῶς, φωτός (phôs, phōtós) 'light') is an elementary particle that is a quantum of the electromagnetic field, including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force. (wikipedia.org)
The name photon derives from the Greek word for light, φῶς (transliterated phôs). (wikipedia.org)
Einstein showed that light is quantized and introduced the concept of photons, the young Danish physicist announced in 1913 that matter too could be described by quanta. (ens.fr)
For "light particles," or photons, this should also work. (nanowerk.com)
This allowed them to concentrate the cooled-off light particles so strongly that they condensed into a "super-photon. (nanowerk.com)
Both are wavelike forms of electromagnetic energy carried by particles called photons (see How Light Works for details). (howstuffworks.com)
The difference between X-rays and visible light rays is the energy level of the individual photons. (howstuffworks.com)
The atoms that make up your body tissue absorb visible light photons very well. (howstuffworks.com)
By adding electricity, heat, or light energy to atoms in their ground state, their energy level can be raised. (medscape.com)
Synchrotron radiation is a light that is extremely bright, i.e. photon-dense, and equally intense at all wavelengths. (lu.se)
By investigating these atoms at different times after the structure was excited with light we can trace the development of electronic and structural changes even in very complex systems or in other words follow the electron through the molecule and over interfaces. (lu.se)

The photon concept has led to momentous advances in experimental and theoretical physics, including lasers, Bose-Einstein condensation, quantum field theory, and the probabilistic interpretation of quantum mechanics. (wikipedia.org)

The modern photon concept originated during the first two decades of the 20th century with the work of Albert Einstein, who built upon the research of Max Planck. (wikipedia.org)
Also, the photon obeys Bose-Einstein statistics, and not Fermi-Dirac statistics. (wikipedia.org)
The atoms we use are ruled by Bohr's model and the photons, which we detect without demolishing them thanks to these atoms, behave like the photons Einstein thought of trapping and counting in a box. (ens.fr)
This is what makes it so difficult to get the quantity of cool photons that is required for Bose-Einstein condensation to occur. (nanowerk.com)

These may collectively release their energy in a burst of photons. (ieee.org)
In this study, a post-image reconstruction material decomposition method is constructed for a low-energy micro-CT setup using a photon counting x-ray detector. (frontiersin.org)
The low photon energy range (4-11 keV) allows for K-edge contrast separation of naturally occurring materials in organic tissue without the need of additional contrast agents. (frontiersin.org)
With the photon counting detector, this data was obtained by acquiring two energy window images on each side of the K-edge of one material in the sample. (frontiersin.org)
A different approach is to use a photon counting detector with multiple energy-discriminating thresholds as shown by [ 9 - 11 ]. (frontiersin.org)
Breaking up the atom partially consumes the photon's energy. (scitechdaily.com)
Photon vs Energy: What's the Difference? (physicsforums.com)
Regarding Heisenberg's question, it's still unknown what would happen if photons had no energy left to transfer. (physicsforums.com)
Why can't photons be the same as energy? (physicsforums.com)
Photons are the bosuns (carrier particles) for electromagnetic energy. (physicsforums.com)
Another good way to put it would be to say that photons have properties other than their energy. (physicsforums.com)
Is it possible to have a photon with no energy left to tranfer? (physicsforums.com)
So if an electron captures a photo, and jumps up to the next energy state, regardless of the direction of the photon, where does the momentum change due to the direction of the photon go? (physicsforums.com)
In 1926, Gilbert N. Lewis popularized the term photon for these energy units. (wikipedia.org)
In chemistry and optical engineering, photons are usually symbolized by hν, which is the photon energy, where h is the Planck constant and the Greek letter ν (nu) is the photon's frequency. (wikipedia.org)
a. what is the energy of the emitted photon if an electron in the hydrogen atom. (justaaa.com)
Question:a. what is the energy of the emitted photon if an electron in the hydrogen atom. (justaaa.com)
a. what is the energy of the emitted photon if an electron in the hydrogen atom makes a transition from the n=7 state to the n=2 state? (justaaa.com)
graphene can therefore absorb photons of any energy. (sciencedaily.com)
This property makes graphene particularly attractive for absorbing very low energy photons (terahertz and infrared) which pass through most semiconductors. (sciencedaily.com)
So the Maryland researchers used a special trick: when bilayer graphene is exposed to an electric field it has a small band gap, large enough that its resistance becomes strongly temperature dependent, but small enough to maintain its ability to absorb low energy infrared photons. (sciencedaily.com)
Investigation of quad-energy high-rate photon counting for X-ray computed tomography using a cadmium telluride detector. (americanelements.com)
To obtain four kinds of tomograms at four different X-ray energy ranges simultaneously, we have constructed a quad-energy (QE) X-ray photon counter with a cadmium telluride (CdTe) detector and four sets of comparators and microcomputers (MCs). (americanelements.com)
When an electron drops to a lower orbital, it needs to release some energy -- it releases the extra energy in the form of a photon. (howstuffworks.com)
The energy level of the photon depends on how far the electron dropped between orbitals. (howstuffworks.com)
When a photon collides with another atom, the atom may absorb the photon's energy by boosting an electron to a higher level. (howstuffworks.com)
For this to happen, the energy level of the photon has to match the energy difference between the two electron positions. (howstuffworks.com)
The energy level of the photon fits with various energy differences between electron positions. (howstuffworks.com)
X-ray photons also pass through most things, but for the opposite reason: They have too much energy. (howstuffworks.com)
Some of the energy from the X-ray photon works to separate the electron from the atom, and the rest sends the electron flying through space. (howstuffworks.com)
A larger atom is more likely to absorb an X-ray photon in this way, because larger atoms have greater energy differences between orbitals -- the energy level more closely matches the energy of the photon. (howstuffworks.com)
Smaller atoms, where the electron orbitals are separated by relatively low jumps in energy, are less likely to absorb X-ray photons. (howstuffworks.com)
However, a small percentage of atoms naturally exists at any given time at a higher, discrete energy level (E 1 , E 2 , E n ). (medscape.com)
The energy is then released spontaneously in the form of photons or electromagnetic (EM) waves to return to the ground state. (medscape.com)
The annihilation of a positron-electron pair results in the production of two photons, each of 0.51 MeV in energy (see pair production). (cdc.gov)
By tuning the photon energy across the threshold for the sequential process the double ionization signal can be turned on and off, indicating that the two-photon double ionization predominantly occurs through a sequential process. (lu.se)
The demonstrated performance opens up possibilities for future XUV-XUV pump-probe experiments with attosecond temporal resolution in a photon energy range where it is possible to unravel the dynamics behind direct versus sequential double ionization and the associated electron correlation effects. (lu.se)
A radionuclide is a radioactive form of an element, which means it is an unstable atom that becomes more stable by releasing energy as radiation. (msdmanuals.com)
An example is intercalating atoms between MXene sheets for energy storage applications such as anodes in supercapacitors and batteries. (lu.se)
At BOREAS, experiments use either the beamline XMCD vector cryomagnet or a multipurpose UHV reflectometer in combination with x-ray photons of energy on the range of 100 eV to 4000 eV (VLS-grating monochromator) and ful - polarization control (Apple II EPU). (lu.se)

The soft tissue in your body is composed of smaller atoms, and so does not absorb X-ray photons particularly well. (howstuffworks.com)

The particles that make us up - which bind together to form protons, neutrons, nuclei and ultimately atoms - have mass. (newscientist.com)

H I describes the interactions between the atom and the waveguide, where the Dirac delta functions δ ( x ) and δ ( x − d ) indicate that the atom-waveguide couplings occur at x = 0 and x = d , respectively. (consultoracis.com.ar)

i) the high enhancement causes the radiative lifetime of the atoms to be reduced by several orders of magnitude, greatly increasing the fluorescence. (lu.se)

When an atom absorbs or emits a photon, momentum is interchanged. (physicsforums.com)

The elementary processes in which photons are emitted, absorbed, scattered, or exchanged between atoms are treated in detail and described using diagrammatic representation. (freepdfbook.com)
Photons are emitted in many natural processes. (wikipedia.org)

This year, Bohr's model of the Hydrogen atom is 100 years old. (ens.fr)
Bohr's Model of the Atom. (wiley-vch.de)

And then, right in the center of that space, there's a tiny nucleus - a dense knot of protons and neutrons that give the atom most of its mass. (space.com)
And the numbers of those protons and neutrons determine whether the atom is iron or oxygen or xenon, and whether it's radioactive or stable. (space.com)
Still, no one knows how those protons and neutrons (together known as nucleons) behave inside an atom. (space.com)
Outside an atom, protons and neutrons have definite sizes and shapes. (space.com)

He postulated that, in the Hydrogen atom, only a set of orbits is allowed, corresponding to discrete energies and radiuses. (ens.fr)

For some mirrors, this means that atoms must be removed from the mirror's surface one by one. (photonics.com)

This symbol for the photon probably derives from gamma rays, which were discovered in 1900 by Paul Villard, named by Ernest Rutherford in 1903, and shown to be a form of electromagnetic radiation in 1914 by Rutherford and Edward Andrade. (wikipedia.org)
Photons--Particlelike Properties of Radiation. (wiley-vch.de)
Annihilation Radiation-- The photons produced when an electron and a positron unite and cease to exist. (cdc.gov)

A laser beam within the clock, directed through the cloud of atoms, can detect the atoms' vibrations, which ultimately determine the length of a single second. (phys.org)

Together with colleagues from the Quantum Dynamics Division led by Prof. Gerhard Rempe, he has now succeeded in taking an important step towards making photons usable for technological applications such as quantum computing: For the first time, the team generated up to 14 entangled photons in a defined way and with high efficiency. (mpg.de)

The simplest idea is this: as long as the electron is attached to the nucleus, the momentum is transferred to the heavier particle, i.e., the atom nucleus. (scitechdaily.com)
In the analysis of Compton Scattering, the photon is assumed to be a particle that has a momentum determined by the de Broglie hypothesis. (physicsforums.com)
As with other elementary particles, photons are best explained by quantum mechanics and exhibit wave-particle duality, their behavior featuring properties of both waves and particles. (wikipedia.org)
In the Standard Model of particle physics, photons and other elementary particles are described as a necessary consequence of physical laws having a certain symmetry at every point in spacetime. (wikipedia.org)
Alpha Particle (symbolized by Greek letter )-- A charged particle emitted from the nucleus of certain radioactive atoms. (cdc.gov)

A variety of geometries such as photonic crystal devices and whispering gallery mode resonators have been employed to achieve such behaviour for bright single-photon sources and strongly-coupled QD-cavity systems 2 . (nature.com)

For example, the quantum effect known as superposition enables atoms and other building blocks of the cosmos to essentially exist in two or more places or states at the same time. (ieee.org)
Thus, if the atom is in a superposition on a transition in resonance with the cavity, an incoming photon will be put into a superposition of being reflected and not. (lu.se)

Following a novel technique, the researchers generated up to 14 entangled photons in an optical resonator, which can be prepared into specific quantum physical states in a targeted and very efficient manner. (mpg.de)

You can make the argument that a single photon cannot possibly change the state of 3,000 atoms, but this one photon does-it builds up correlations that you didn't have before," says Vladan Vuletic, the Lester Wolfe Professor in MIT's Department of Physics, and the paper's senior author. (phys.org)
The trick to this experiment was that we used a single atom to emit the photons and interweave them in a very specific way,' says Thomas. (mpg.de)
Because the chain of photons emerged from a single atom, it could be produced in a deterministic way,' Thomas explains. (mpg.de)
We present a scheme for the demonstration of a 1-atom based single-photon switch, utilizing cavity-QED with toroidal micro-resonators. (technion.ac.il)
The device we propose will also function as a 1-qbit quantum memory, enabling a deterministic quantum state transfer between a single photon and an atom, with no need for any control field. (technion.ac.il)
b Two paths of a single photon propagating from port 1 to port 2 (left) or from port 2 to port 1 (right). (consultoracis.com.ar)
Both these two things contribute to enabling single atoms to be detected. (lu.se)
iii) With such a strong coupling, the presence of a single atom in the cavity can shift the cavity resonance, deciding whether incoming photons are reflected or transmitted. (lu.se)

Moiseev S.A, Ablayev F.M, Andrianov S.N, Quantum computer based on triangular atom-photon molecule//Proceedings of SPIE - The International Society for Optical Engineering. (kpfu.ru)
Moreover, photons have been studied as elements of quantum computers, and for applications in optical imaging and optical communication such as quantum cryptography. (wikipedia.org)
Multielectron Atoms--Optical Excitations. (wiley-vch.de)

At such minuscule scales, particles such as atoms are known to behave differently from matter at the macroscale. (phys.org)

The differential transition probabilities of 2s→1s, 3s→1s, 3d→1s, and 4sd→1s two-photon decay per decay of a K-shell vacancy have been determined. (unizg.hr)

X-ray photons are detected using the CdTe detector, and the event pulses produced using amplifiers are sent to four comparators simultaneously to regulate four threshold energies of 20, 33, 50 and 65keV. (americanelements.com)

If, however, a photon has interacted with the atoms, its polarization rotates just slightly-a sign that it was affected by quantum "noise" in the ensemble of spinning atoms, with the noise being the difference in the number of atoms spinning clockwise and counterclockwise. (phys.org)

1992) 'Two-photon decay in silver and hafnium atoms', Physical Review A , 46(1), pp. 132-141. (unizg.hr)
Radioactive decay of 109Cd and of 179Ta was used to generate K-shell vacancy states in silver and hafnium atoms, respectively. (unizg.hr)

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Massless6

Absorption7

Emission7

Rubidium5

Rydberg1

Particles of light2

Excitation1

Collisions2

Pulse5

Optics3

Wavelength3

Light17

Lasers1

Einstein4

Energy40

Absorb1

Nuclei1

Occur1

Radiative1

Emits1

Processes2

Bohr's2

Protons4

Hydrogen1

Mirrors1

Radiation3

Detect1

Applications such as quantum1

Particle5

Photonic1

Superposition2

Researchers1

Single8

Optical3

Behave differently1

Transition1

Energies1

Affected by quantum1

Decay2