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Velocity map imaging inside an electrostatic quadrupole guide is demonstrated. By switching the voltages that are applied to the rods, the quadrupole can be used for guiding Stark decelerated molecules and for extracting the ions. The…

化学物理 · 物理学 2017-08-23 Marina Quintero Pérez , Paul Jansen , Hendrick L. Bethlem

Atoms can be trapped using a combination of static and rotating magnetic fields. A theoretical analysis is performed of a rotating polarisation axis which is used to eliminate regions of zero coupling. A similar result is found using linear…

原子物理 · 物理学 2015-05-18 Barry M. Garraway , Hélène Perrin

Following a recent demonstration of stable trapping of floating particles by stationary (monochromatic) structured water waves [Nature 638, 394 (2025)], we report dynamic water-wave tweezers that enable controllable transport of trapped…

Beams of helium atoms in Rydberg states with principal quantum number $n=52$, and traveling with an initial speed of 1950 m/s, have been accelerated, decelerated and guided while confined in moving electric traps generated above a curved,…

原子物理 · 物理学 2014-12-17 P. Lancuba , S. D. Hogan

A microstructured array of over 1200 electrodes on a substrate has been configured to generate an array of local minima of electric field strength with a periodicity of $120 \mu$m about $25 \mu$m above the substrate. By applying…

原子物理 · 物理学 2008-04-23 Samuel A. Meek , Hendrick L. Bethlem , Horst Conrad , Gerard Meijer

In this work, we optically trapping microparticles with higher order Frozen Wave using holographic optical tweezers. Frozen Waves are diffraction resistant optical beams, obtained by superposing copropagating Bessel beams with the same…

The wave function of a moderately cold atom in a stationary near-resonant standing light wave delocalizes very fast due to wave packet splitting. However, we show that frequency modulation of the field may suppress packet splitting for some…

原子物理 · 物理学 2015-06-18 Victor Argonov

We investigate the steady-state electronic transport through a suspended dimer molecule coupled to leads. When strongly coupled to a vibrational mode, the electron transport is enhanced at the phonon resonant frequency and higher-order…

介观与纳米尺度物理 · 物理学 2013-02-18 D. H. Santamore , Neill Lambert , Franco Nori

The dynamics of a quantum particle bound by an accelerating delta-functional potential is investigated. Three cases are considered, using the reference frame moving along with the {\delta}-function, in which the acceleration is converted…

量子物理 · 物理学 2015-05-27 Er'el Granot , Boris Malomed

We study the dynamics of a supersonic molecular beam in a low-finesse optical cavity and demonstrate that most molecules in the beam can be decelerated to zero central velocity by the intracavity optical field in a process analogous to…

原子物理 · 物理学 2014-10-20 Zhihao Lan , Yongkai Zhao , Peter F. Barker , Weiping Lu

It is shown that a superposition of static and rapidly oscillating electric {\it monopole} (source) fields is capable of trapping particles with a permanent electric dipole moment. Thus, the new trapping mechanism differs fundamentally from…

原子物理 · 物理学 2011-02-15 R. Blümel

We produce SO_2 molecules with a centre of mass velocity near zero using a Stark decelerator. Since the initial kinetic energy of the supersonic SO_2 molecular beam is high, and the removed kinetic energy per stage is small, 326…

原子物理 · 物理学 2009-11-13 O. Bucicov , M. Nowak , S. Jung , G. Meijer , E. Tiemann , Ch. Lisdat

Plasmonic nanopores are extensively investigated as single molecules detectors. The main limitations in plasmonic nanopore technology are the too fast translocation velocity of the molecule through the pore and the consequent very short…

应用物理 · 物理学 2021-05-12 Nicolò Maccaferri , Paolo Vavassori , Denis Garoli

We show how one can measure the signal from slow jumps of a single molecule between metastable positions using a setup where the molecule is fixed to one lead, and one of the coupling strengths is controlled externally. Such a measurement…

介观与纳米尺度物理 · 物理学 2013-04-04 Tero T. Heikkila , Wolfgang Belzig

Carbon monoxide molecules in their electronic, vibrational, and rotational ground state are highly attractive for trapping experiments. The optical or ac electric traps that can be envisioned for these molecules will be very shallow,…

We show, through modeling and simulation, that it is feasible to construct a storage ring that will store dense bunches of strong-field-seeking polar molecules at 30 m/s (kinetic energy of 2K) and hold them, for several minutes, against…

加速器物理 · 物理学 2009-11-11 Hiroshi Nishimura , Glen Lambertson , Juris G. Kalnins , Harvey Gould

We propose a method to trap polar molecules with the electrical force induced by the surface acoustic wave (SAW) on piezoelectric materials. In this approach, the electrical force is perpendicular to the moving direction of the polar…

量子物理 · 物理学 2025-04-18 Haijin Ding , Re-Bing Wu , Yu-xi Liu

A new strategy for trapping quantum particles is presented, which behaves like an effective harmonic oscillator potential trap wherever is desired. The approach is based on harmonic contraction and expansion of the system around a fixed…

量子物理 · 物理学 2019-03-14 Sebastián Carrasco , José Rogan , Juan Alejandro Valdivia

The Stark interaction of polar molecules with an inhomogeneous electric field is exploited to select slow molecules from a room-temperature reservoir and guide them into an ultrahigh vacuum chamber. A linear electrostatic quadrupole with a…

化学物理 · 物理学 2009-11-07 S. A. Rangwala , T. Junglen , T. Rieger , P. W. H. Pinkse , G. Rempe

We propose and analyze an electrostatic-optical nano-scale trap for cold diatomic polar molecules. The main ingredient of our proposal is an square-array of ferroelectric nano-rods {with alternating polarization}. We show that, in contrast…

量子气体 · 物理学 2018-02-21 Omjyoti Dutta , Geza Giedke