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- Optical_lattice abstract "An optical lattice is formed by the interference of counter-propagating laser beams, creating a spatially periodic polarization pattern. The resulting periodic potential may trap neutral atoms via the Stark shift. Atoms are cooled and congregate in the locations of potential minima. The resulting arrangement of trapped atoms resembles a crystal lattice.Atoms trapped in the optical lattice may move due to quantum tunneling, even if the potential well depth of the lattice points exceeds the kinetic energy of the atoms, which is similar to the electrons in a conductor. However, a superfluid–Mott insulator transition may occur, if the interaction energy between the atoms becomes larger than the hopping energy when the well depth is very large. In the Mott insulator phase, atoms will be trapped in the potential minima and cannot move freely, which is similar to the electrons in an insulator. In the case of Fermionic atoms, if the well depth is further increased the atoms are predicted to form an antiferromagnetic, i.e. Néel state at sufficiently low temperatures. Atoms in an optical lattice provide an ideal quantum system where all parameters can be controlled. Thus they can be used to study effects that are difficult to observe in real crystals. They are also promising candidates for quantum information processing. The best atomic clocks in the world use atoms trapped in optical lattices, to obtain narrow spectral lines that are unaffected by the Doppler effect and recoil. There are two important parameters of an optical lattice: the well depth and the periodicity. The well depth of the optical lattice can be tuned in real time by changing the power of the laser, which is normally controlled by an AOM (acousto-optic modulator). The periodicity of the optical lattice can be tuned by changing the wavelength of the laser or by changing the relative angle between the two laser beams. The real-time control of the periodicity of the lattice is still a challenging task. Because the wavelength of the laser cannot be varied over a large range in real time, the periodicity of the lattice is normally controlled by the relative angle between the laser beams. However, it is difficult to keep the lattice stable while changing the relative angles, since the interference is sensitive to the relative phase between the laser beams. Continuous control of the periodicity of a one-dimensional optical lattice while maintaining trapped atoms in-situ was first demonstrated in 2005 using a single-axis servo-controlled galvanometer. This \"accordion lattice\" was able to vary the lattice periodicity from 1.30 to 9.3 μm. More recently, a different method of real-time control of the lattice periodicity was demonstrated, in which the center fringe moved less than 2.7 μm while the lattice periodicity was changed from 0.96 to 11.2 μm. Keeping atoms (or other particles) trapped while changing the lattice periodicity remains to be tested more thoroughly experimentally. Such accordion lattices are useful for controlling ultracold atoms in optical lattices, where small spacing is essential for quantum tunneling, and large spacing enables single-site manipulation and spatially resolved detection.Besides trapping cold atoms, optical lattices have been widely used in creating gratings and photonic crystals. They are also useful for sorting microscopic particles, and may be useful for assembling cell arrays.".
- Optical_lattice thumbnail OptLat.jpg?width=300.
- Optical_lattice wikiPageExternalLink latticeindex.html.
- Optical_lattice wikiPageExternalLink www.optical-lattice.com.
- Optical_lattice wikiPageExternalLink theme3.py?level=2&index1=172133.
- Optical_lattice wikiPageID "3800688".
- Optical_lattice wikiPageLength "7607".
- Optical_lattice wikiPageOutDegree "34".
- Optical_lattice wikiPageRevisionID "677645055".
- Optical_lattice wikiPageWikiLink Acousto-optic_modulator.
- Optical_lattice wikiPageWikiLink Antiferromagnetism.
- Optical_lattice wikiPageWikiLink Atom.
- Optical_lattice wikiPageWikiLink Atomic_clock.
- Optical_lattice wikiPageWikiLink Bose–Hubbard_model.
- Optical_lattice wikiPageWikiLink Category:Atomic_physics.
- Optical_lattice wikiPageWikiLink Category:Quantum_optics.
- Optical_lattice wikiPageWikiLink Cell_array.
- Optical_lattice wikiPageWikiLink Crystal.
- Optical_lattice wikiPageWikiLink Doppler_effect.
- Optical_lattice wikiPageWikiLink Electrical_conductor.
- Optical_lattice wikiPageWikiLink Electromagnetically_induced_grating.
- Optical_lattice wikiPageWikiLink Electron.
- Optical_lattice wikiPageWikiLink File:OptLat.jpg.
- Optical_lattice wikiPageWikiLink Frequency.
- Optical_lattice wikiPageWikiLink Grating.
- Optical_lattice wikiPageWikiLink Insulator_(electricity).
- Optical_lattice wikiPageWikiLink Interaction_energy.
- Optical_lattice wikiPageWikiLink Interference_(wave_propagation).
- Optical_lattice wikiPageWikiLink Laser.
- Optical_lattice wikiPageWikiLink List_of_laser_articles.
- Optical_lattice wikiPageWikiLink Louis_Néel.
- Optical_lattice wikiPageWikiLink Mott_insulator.
- Optical_lattice wikiPageWikiLink Phase_(waves).
- Optical_lattice wikiPageWikiLink Photonic_crystal.
- Optical_lattice wikiPageWikiLink Potential_well.
- Optical_lattice wikiPageWikiLink Quantum_information.
- Optical_lattice wikiPageWikiLink Quantum_tunnelling.
- Optical_lattice wikiPageWikiLink Recoil.
- Optical_lattice wikiPageWikiLink Scalar_potential.
- Optical_lattice wikiPageWikiLink Stark_effect.
- Optical_lattice wikiPageWikiLink Superfluidity.
- Optical_lattice wikiPageWikiLink Wavelength.
- Optical_lattice wikiPageWikiLinkText "Optical Lattices".
- Optical_lattice wikiPageWikiLinkText "Optical lattice".
- Optical_lattice wikiPageWikiLinkText "optical lattice".
- Optical_lattice wikiPageUsesTemplate Template:Quantum_computing.
- Optical_lattice wikiPageUsesTemplate Template:Reflist.
- Optical_lattice subject Category:Atomic_physics.
- Optical_lattice subject Category:Quantum_optics.
- Optical_lattice type TelevisionShow.
- Optical_lattice type Mechanic.
- Optical_lattice type Physic.
- Optical_lattice comment "An optical lattice is formed by the interference of counter-propagating laser beams, creating a spatially periodic polarization pattern. The resulting periodic potential may trap neutral atoms via the Stark shift. Atoms are cooled and congregate in the locations of potential minima.".
- Optical_lattice label "Optical lattice".
- Optical_lattice sameAs Q2027451.
- Optical_lattice sameAs الشبكات_البصرية.
- Optical_lattice sameAs Optisches_Gitter_(Quantenoptik).
- Optical_lattice sameAs Reticolo_ottico.
- Optical_lattice sameAs Sieć_optyczna.
- Optical_lattice sameAs m.0b0pd2.
- Optical_lattice sameAs Q2027451.
- Optical_lattice wasDerivedFrom Optical_lattice?oldid=677645055.
- Optical_lattice depiction OptLat.jpg.
- Optical_lattice isPrimaryTopicOf Optical_lattice.