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The Atomic Dynamics of Rare Everlasting Electric Fields（图）
Atomic Dynamics Rare Everlasting Electric Fields
2018/1/31
By ricocheting neutrons off the atoms of yttrium manganite (YMnO3) heated to 3,000 degrees Fahrenheit, researchers have discovered the atomic mechanisms that give the unusual material its rare electro...
Penn and UC Merced Researchers Match Physical and Virtual Atomic Friction Experiments
Penn and UC Merced Researchers Match Physical Virtual Atomic Friction Experiments
2015/5/25
Technological limitations have made studying friction on the atomic scale difficult, but researchers at the University of Pennsylvania and the University of California, Merced, have now made advances ...
Atomic structure of a single large biomolecule from diffraction patterns of random orientations
X-ray free electron lasers Single particle x-ray diffraction Orientation Structure reconstruction
2012/4/20
The short and intense pulses of the new X-ray free electron lasers, now operational or under construction, may make possible diffraction experiments on single molecule-sized objects with high resoluti...
We study the condensed fraction of a harmonically-trapped atomic Bose gas at the critical point predicted by mean-field (MF) theory. The non-zero condensed fraction f0 is induced by critical correlati...
Magneto-Electric response functions for simple atomic systems
Magneto-Electric atomic systems
2011/9/14
We consider a simple atomic two-body bound state system that is overall charge neutral and placed in a static electric and magnetic field, and calculate the magneto-electric response function as a fun...
Propagation of the relativistic charged particle in an ultracold atomic gas with Bose-Einstein condensates
Bose-Einstein condensation relativistic charged particles energy losses
2010/11/25
We study theoretically some effects caused by a propagation of the charged particle in a dilute gas of alkali-metal atoms in the state with Bose-Einstein condensates. The energy change of the high-spe...
A First Passage Time Analysis of Atomic-Resolution Simulations of the Ionic Transport in a Bacterial Porin
Atomic-Resolution Simulations Ionic Transport Bacterial Porin
2010/11/24
We have studied the dynamics of chloride and potassium ions in the interior of the OmpF porin
under the influence of an external electric field. From the results of extensive all-atom molecular dynam...
Fast atomic transport without vibrational heating
Fast atomic transport vibrational heating
2010/11/5
We use the dynamical invariants associated with the Hamiltonian of an atom in a one dimensional moving trap to inverse engineer the trap motion and perform fast atomic transport without final vibrati...
Atomic Fock states by gradual trap reduction: from sudden to adiabatic limits
Atomic Fock states gradual trap reduction: sudden adiabatic limits
2010/10/18
We investigate the possibility to form high delity atomic Fock states by gradual reduction of
a quasi one dimensional trap containing spin polarized fermions or strongly interacting bosons in the To...
Gaussification of quantum states of traveling light beams in atomic memory
Gaussification quantum states atomic memory
2010/10/21
We propose and investigate a protocol for Gaussification of quantum states of traveling light
beams in an atomic quantum memory that couples to light via quantum non-demolition interaction.
The prot...
Competition between symmetry breaking and onset of collapse in weakly coupled atomic condensates
symmetry breaking atomic condensates
2010/4/6
We analyze the symmetry breaking of matter-wave solitons in a pair of cigar-shaped traps coupled by tunneling of atoms. The model is based on a system of linearly coupled nonpolynomial Schr\"odinger e...
Generation of macroscopic singlet states in atomic ensembles
Generation macroscopic singlet states atomic ensembles
2010/4/9
We study squeezing of the spin uncertainties by quantum non-demolition (QND) measurement in non-polarized spin ensembles. Unlike the case of polarized ensembles, the QND measurements can be performed ...
Impact of intrinsic localized modes of atomic motion on materials properties
atomic motion materials properties
2010/4/1
Recent neutron and x-ray scattering measurements show intrinsic localized modes (ILMs) in metallic uranium and ionic sodium iodide. Here, the role ILMs play in the behavior of these materials is exami...
Sources and technology for an atomic gravitational wave interferometric sensor
atom interferometers gravitational waves
2010/3/18
We study the use of atom interferometers as detectors for gravitational waves in the mHz - Hz frequency band, which is complementary to planned optical interferometers, such as LIGO and LISA. We descr...
Coherent Transport of Atomic Quantum States in a Scalable Shift Register
Coherent Transport Atomic Quantum Scalable Shift Register
2010/4/8
The coherent storage and transport of atomic quantum systems in versatile potential geometries are key elements for the investigation of quantum information processing and quantum degenerate gases. In...