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Ultracold atom waves may shed light on rogue ocean killers
Ultracold atom waves shed light rogue ocean killers
2017/7/19
By precisely controlling the quantum behavior of an ultracold atomic gas, Rice University physicists have created a model system for studying the wave phenomenon that may bring about rogue waves in Ea...
Characterizing entanglement of an artificial atom and a cavity cat state with Bell’s inequality
Characterizing entanglement cavity cat state Bell’s inequality
2016/1/22
The Schrodinger’s cat thought experiment highlights the counterintuitive concept of entan-glement in macroscopically distinguishable systems. The hallmark of entanglement is the detection of strong co...
09.05.14 - An EPFL-led research collaboration has shown for the first time the maximum theoretical limit of energy needed to control the magnetization of a single atom. The fundamental work can have g...
Fundamental Limit to Atom-Ion Sympathetic Cooling in Paul Traps
Atom-Ion Sympathetic Paul Traps Atomic Physics
2012/5/31
We present a fundamental limit to the sympathetic cooling of ions in radio-frequency traps using cold atoms. The limit arises from the work done by the trap electric field during a long-range ion-atom...
Van der Waals-Casimir-Polder interaction of an atom with a composite surface
Van der Waals-Casimir-Polder interaction atom composite surface Atomic Physics
2012/5/29
We study the dispersion interaction of the van der Waals and Casimir-Polder (vdW-CP) type between a neutral atom and the surface of a metal by allowing for nonlocal electrodynamics, i.e. electron diff...
Phase shift in an atom interferometer induced by the additional laser lines of a Raman laser generated by modulation
atom interferometer additional laser lines of a Raman laser modulation Atomic Physics
2012/5/28
The use of Raman laser generated by modulation for light-pulse atom interferometer allows to have a laser system more compact and robust. However, the additional laser frequencies generated can pertur...
视频：南京大学大学物理学第43讲 Hydrogen atom。
Dynamics of hydrogen-like atom bounded by maximal acceleration
Maximal acceleration Extended Relativistic Dynamics Hydrogen-like atom probabilistic description center of mass
2012/4/20
The existence of a maximal acceleration for massive objects was conjectured by Caianiello 30 years ago based on the Heisenberg uncertainty relations. Many consequences of this hypothesis have been stu...
Total angular momentum representation for atom-molecule collisions in electric fields
Total angular momentum representation atom-molecule collisions electric fields
2012/2/28
It is shown that the atom-molecule collision problem in the presence of an external electric field can be solved using the total angular momentum representation in the body-fixed coordinated frame, le...
Deterministic production of free-propagating Fock states of programmable photon number from a single atom-cavity system
Deterministic production free-propagating Fock states programmable photon number single atom-cavity system
2012/2/28
We propose a mechanism for producing Fock states on demand leaking from a single mode optical cavity interacting with a single atom and a laser pulse. The number of photons can be chosen, as it is det...
Interferometric thermometry of a single sub-Doppler cooled atom
Interferometric thermometry single sub-Doppler cooled atom
2012/2/28
Efficient self-interference of single-photons emitted by a sideband-cooled Barium ion is demonstrated. First, the technical tools for performing efficient coupling to the quadrupolar transition of a s...
Atomic fragments from the nuclear reaction of the ${}^{6}$Li atom with slow neutrons
Atomic fragments the nuclear reaction Li atom slow neutrons
2011/8/5
Abstract: Approximate probabilities of formation of various atoms and ions in different bound states are determined for the exothermic nuclear $(n,{}^{6}$Li$;t,{}^{4}$He)-reaction of atomic lithium-6 ...
A Relativistic Version of the Two-Level Atom in the Rest-Frame Instant Form of Dynamics
the Two-Level Atom the Rest-Frame Instant Form of Dynamics High Energy Physics - Theory
2011/8/30
Abstract: We define a relativistic version of the two-level atom, in which an extended atom is replaced by a point particle carrying suitable Grassmann variables for the description of the two-level s...
A Relativistic Version of the Two-Level Atom in the Rest-Frame Instant Form of Dynamics
Relativistic Version the Two-Level Atom the Rest-Frame Instant Form of Dynamics
2011/8/16
Abstract: We define a relativistic version of the two-level atom, in which an extended atom is replaced by a point particle carrying suitable Grassmann variables for the description of the two-level s...
Cold collisions of an open-shell S-state atom with a ^2Pi molecule: N(^4S) colliding with OH in a magnetic field
Cold collisions open-shell S-state atom OH magnetic field
2011/8/3
Cold collisions of an open-shell S-state atom with a ^2Pi molecule: N(^4S) colliding with OH in a magnetic field.