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Polar molecules are an emerging platform for quantum technologies based on their long-range electric dipole-dipole interactions, which open new possibilities for quantum information processing and the quantum simulation of strongly…

The quantum transport in a narrow channel (NC) is studied in the presence of a time-dependent delta-profile electric field. The electric field is taken to be transversely polarized, with frequency $\omega$, causing inter-subband and…

介观与纳米尺度物理 · 物理学 2015-06-25 C. S. Chu , C. S. Tang

Ultracold atoms confined in a dipole trap are submitted to a potential whose depth is proportional to the real part of their dynamic dipole polarizability. The atoms also experience photon scattering whose rate is proportional to the…

原子物理 · 物理学 2017-04-11 Maxence Lepers , Jean-François Wyart , Olivier Dulieu , --

We determine trapping conditions for ultracold polar molecules, where pairs of internal states experience identical trapping potentials. Such conditions could ensure that detrimental effects of inevitable inhomogeneities across an ultracold…

原子物理 · 物理学 2015-06-12 Alexander Petrov , Constantinos Makrides , Svetlana Kotochigova

Artificial molecules containing just one or two electrons provide a powerful platform for studies of orbital and spin quantum dynamics in nanoscale devices. A well-known example of these dynamics is tunneling of electrons between two…

Trapping ultracold molecules in conservative traps is essential for applications -- such as quantum state-controlled chemistry, quantum simulations, and quantum information processing. These applications require high densities or…

原子物理 · 物理学 2022-11-29 Juliana J. Park , Yu-Kun Lu , Alan O. Jamison , Wolfgang Ketterle

Kinetics of spatially uniform distribution of 2D electrons in crossed electric and magnetic fields in the presence of microwave radiation has been studied. In the present model the contribution from the microwave radiation and the effects…

介观与纳米尺度物理 · 物理学 2015-06-25 I. I. Lyapilin , A. E. Patrakov

We consider cold collisions of OH molecules in the $^2\Pi_{3/2}$ grounds state, under the influnce of a magnetic field. We find that modest fields of several thousand gauss can act to suppress inelastic collisions of weak-field seeking…

原子物理 · 物理学 2009-11-10 Christopher Ticknor , John L. Bohn

Strong-field ionization of polar molecules contains rich dynamical processes such as tunneling, excitation, and Stark shift. These processes occur on a sub-cycle time scale and are difficult to distinguish in ultrafast measurements. Here,…

原子物理 · 物理学 2021-12-15 Jia-Yin Che , Chao Chen , Shang Wang , Guo-Guo Xin , Yan-Jun Chen

We study the energy spectrum and wave packet dynamics of electrons in a two-dimensional periodic potential subject to a perpendicular spatially modulated magnetic field. We observe avoided band crossings, metal-insulator transitions, and…

介观与纳米尺度物理 · 物理学 2007-05-23 Björn Naundorf , Roland Ketzmerick

Detecting the internal state of polar molecules is a substantial challenge when standard techniques such as resonance-enhanced multi photon ionization (REMPI) or laser-induced fluorescense (LIF) do not work. As this is the case for most…

原子物理 · 物理学 2014-12-01 Rosa Glöckner , Alexander Prehn , Gerhard Rempe , Martin Zeppenfeld

We have experimentally and theoretically investigated the mixed-field orientation of rotational-state-selected OCS molecules and we achieve strong degrees of alignment and orientation. The applied moderately intense nanosecond laser pulses…

Laser cooling and magneto-optical trapping of molecules typically involves multiple transitions driven by several laser frequencies. We analyze how magneto-optical trapping forces depend on the angular momenta, $F_l$ and $F_u$, and the…

原子物理 · 物理学 2015-06-22 M. R. Tarbutt

Polar molecules in selected quantum states can be guided, decelerated, and trapped using electric fields created by microstructured electrodes on a chip. Here we explore how transitions between two of these quantum states can be induced…

原子物理 · 物理学 2015-03-17 Gabriele Santambrogio , Samuel A. Meek , Mark J. Abel , Liam M. Duffy , Gerard Meijer

Nonlinear magneto-optical rotation is studied under non-equilibrium conditions. The polarization rotation of linearly polarized light traversing a rubidium vapor cell is observed versus the time-dependent (swept) longitudinal magnetic field…

原子物理 · 物理学 2020-03-25 Raghwinder Singh Grewal , Szymon Pustelny

In this chapter we review the field of radio-frequency dressed atom trapping. We emphasise the role of adiabatic potentials and give simple, but generic models of electromagnetic fields that currently produce traps for atoms at microkelvin…

原子物理 · 物理学 2017-06-27 Hélène Perrin , Barry M. Garraway

We demonstrate that ultracold symmetric top molecules loaded into an optical lattice can realize highly tunable and unconventional models of quantum magnetism, such as an XYZ Heisenberg spin model. We show that anisotropic dipole-dipole…

量子气体 · 物理学 2015-03-20 M. L. Wall , K. Maeda , L. D. Carr

We theoretically investigate the properties of highly polar diatomic molecules containing $^2S$-state transition-metal atoms. We calculate potential energy curves, permanent electric dipole moments, spectroscopic constants, and leading…

原子物理 · 物理学 2021-02-16 Michał Śmiałkowski , Michał Tomza

The impact of the optical field polarization on the spectrum of magnetically-induced transitions, a class of transitions forbidden at zero magnetic field, is studied with a weak-probe sub-Doppler technique. The high spectral resolution of…

原子物理 · 物理学 2025-02-19 A. Sargsyan , E. Klinger , A. Amiryan , D. Sarkisyan

In this article we present a concrete proposal for spin squeezing the ultracold ground state polar paramagnetic molecule OH, a system currently under fine control in the laboratory. In contrast to existing work, we consider a single,…

量子物理 · 物理学 2016-01-20 M. Bhattacharya