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We investigate the sedimentation of initially packed paramagnetic particles in presence of a homogeneous external magnetic field, in a Hele-Shaw cell filled with water. Although the magnetic susceptibility of the particles is small and the…

软凝聚态物质 · 物理学 2020-08-12 Jérémy Vessaire , Nicolas Plihon , Romain Volk , Mickaël Bourgoin

Modern advances in polarized beam control should make it possible to accurately measure Stern-Gerlach (S-G) deflection of relativistic beams. Toward this end a relativistically covariant S-G formalism is developed that respects the opposite…

加速器物理 · 物理学 2016-11-14 Richard Talman

Two mechanisms of two-color (\omega + 2\omega) laser-induced field-free molecular orientation, based on the hyperpolarizability and ionization depletion, are explored and compared. The CO molecule is used as a computational example. While…

原子物理 · 物理学 2012-09-14 Michael Spanner , Serguei Patchkovskii , Eugene Frumker , Paul Corkum

We study the dynamics of paramagnetic molecular superrotors in an external magnetic field. Optical centrifuge is used to create dense ensembles of oxygen molecules in ultra-high rotational states. It is shown for the first time, that the…

量子物理 · 物理学 2015-06-10 A. A. Milner , A. Korobenko , J. Floß , I. Sh. Averbukh , V. Milner

The prospects for shielding ultracold, paramagnetic, dipolar molecules from inelastic and chemical collisions are investigated. Molecules placed in their first rotationally excited states are found to exhibit effective long-range repulsion…

原子物理 · 物理学 2016-01-20 Goulven Quéméner , John L. Bohn

Half-cycle laser pulse is applied on an absorbed molecule to investigate its alignment and orientation behavior. Crossover from field-free to hindered rotation motion is observed by varying the angel of hindrance of potential well. At small…

原子物理 · 物理学 2007-05-23 Y. Y. Liao , Y. N. Chen , D. S. Chuu

This paper studies the deflection of charged particles in a dipole magnetic field in Schwarzschild spacetime background in the weak field approximation. To calculate the deflection angle, we use Jacobi metric and Gauss-Bonnet theorem. Since…

广义相对论与量子宇宙学 · 物理学 2022-12-28 Zonghai Li , Wei Wang , Junji Jia

The strong coupling between intense laser fields and valence electrons in molecules causes a distortion of the potential energy hypersurfaces which determine the motion of nuclei in a molecule and influences possible reaction pathways. The…

This study shows the unexpected and counter-intuitive possibility of simultaneously orienting a molecule while delocalizing its molecular axis in a plane in field-free conditions. The corresponding quantum states are characterized and…

量子物理 · 物理学 2022-10-26 D. Sugny

Orientation states of two coupled polar molecules controlled by laser pulses are studied theoretically. By varying the period of a series of periodically applied laser pulse, transition from regular to chaotic behavior may occur. Schmidt…

量子物理 · 物理学 2007-05-23 Ying-Yen Liao , Yueh-Nan Chen , Der-San Chuu

We show that field-free molecular orientation induced by a half-cycle pulse may be considerably enhanced by an additional laser pulse inducing molecular anti-alignment. Two qualitatively different enhancement mechanisms are identified…

量子物理 · 物理学 2009-11-11 E. Gershnabel , I. Sh. Averbukh , R. J. Gordon

We report on criteria to detect entanglement between the light modes of two crossed optical cavities by analyzing the transverse deflection patterns of an atomic beam. The photon exchange between the modes and the atoms occurs around the…

We study the motion of a charged particle with magnetic moment in external electromagnetic fields utilizing covariant unification of Gilbertian and Amperian descriptions of particle magnetic dipole moment. Considering the case of a current…

经典物理 · 物理学 2021-06-04 Martin Formanek , Andrew Steinmetz , Johann Rafelski

We study the birefringence of the quantized polarized light in a magneto-optically manipulated atomic ensemble as a generalized Stern-Gerlach Effect of light. To explain this engineered birefringence microscopically, we derive an effective…

量子物理 · 物理学 2009-11-13 Yu Guo , Lan Zhou , Le-Man Kuang , C. P. Sun

Supersonic beams of polar molecules are deflected using inhomogeneous electric fields. The quantum-state selectivity of the deflection is used to spatially separate molecules according to their quantum state. A detailed analysis of the…

We propose a scheme to exhibit Stern-Gerlach (SG) deflection of high-dimensional vector optical soliton (VOS) at weak-light level in a cold atomic gas via electromagnetically induced transparency. We show that the propagating velocity and…

光学 · 物理学 2015-06-11 Chao Hang , Guoxiang Huang

Entanglement of spin and position variables produced by spatially inhomogeneous magnetic fields of Stern-Gerlach type acting on spinor Bose-Einstein condensates may lead to interference effects at the level of one-boson densities. A model…

凝聚态物理 · 物理学 2009-11-07 S. Cruz-Barrios , M. C. Nemes , A. F. R. de Toledo Piza

The Stern-Gerlach experiment has played an important role in our understanding of quantum behavior. We propose and analyze a modified version of this experiment where the magnetic field of the detector is in a quantum superposition, which…

量子物理 · 物理学 2018-03-29 R. G. Daghigh , M. D. Green , C. J. West

A new mechanism is described, analyzed and visualized, for the dissipation of suprathermal rotation energy of molecules in magnetic fields, a necessary condition for their alignment. It relies upon the Lorentz force perturbing the motion of…

星系天体物理 · 物理学 2016-02-17 Renaud Papoular

The mixed-field orientation of an asymmetric-rotor molecule with its permanent dipole moment non-parallel to the principal axes of polarizability is investigated experimentally and theoretically. We find that for the typical case of a…