Results 81 to 90 of about 32,417 (187)

Spatially truncated optical pumping cooling

New Journal of Physics, 2019
We present both the theoretical description and experimental implementation of a novel cooling technique for ultracold atoms trapped in a confining potential. We call the technique ‘spatially truncated optical pumping cooling.’ By using the fact that the
J Gilbert, R Ferrier Wilson, J Roberts
doaj   +1 more source

Collisional cooling of light ions by co-trapped heavy atoms

, 2016
We experimentally demonstrate cooling of trapped ions by collisions with co-trapped, higher mass neutral atoms. It is shown that the lighter $^{39}$K$^{+}$ ions, created by ionizing $^{39}$K atoms in a magneto-optical trap (MOT), when trapped in an ion ...
Dutta, Sourav, Rangwala, S. A., Sawant, Rahul   +2 more
core   +1 more source

Non‐Hermitian Topological Lattice Photonics: An Analytic Perspective

Advanced Photonics Research, Volume 6, Issue 11, November 2025.
This review establishes exact analytical solutions for non‐Hermitian Hatano–Nelson, Su–Schrieffer–Heeger, and generalized Rice–Mele models. We demonstrate non‐Hermitian skin effects via point‐gap topology, hybrid skin‐topological edge states in 2D lattices, and spin‐polarized boundary modes governed by dual bulk‐boundary correspondence.
Shihua Chen, Abdul Basit, Lingfang Li, Chong Hou, Yang Ruan, Yating Wei, Zhenhua Ni   +6 more
wiley   +1 more source

Observation of Magnetically Induced Trap Loss of Ultracold Thulium Atoms

EPJ Web of Conferences, 2015
We report the observation of influence of homogeneous magnetic field on an optical lattice losses of ultracold thulium atoms. The atomic cloud temperature was T = 15 mK. The dependence of trap population on a value of magnetic field has a broad resonance
Kalganova E.S., Vishnyakova G.A., Golovizin A.A., Tregubov D.O., Sukachev D.D., Akimov A.V., Kolachevsky N.N., Khabarova K.Yu., Sorokin V.N.   +8 more
doaj   +1 more source

Dispersion of First Sound in a Weakly Interacting Ultracold Fermi Liquid

Annalen der Physik, Volume 537, Issue 11, November 2025.
 The weak‐interaction, low‐temperature region of the phase diagram of a Fermi gas the so‐called Fermi liquid regime, which has been somewhat overlooked in ultracold gases‐is investigated. Precise and measurable predictions are presented for the viscosity and dispersion of first sound to leading order in the scattering length.
Thomas Repplinger, Songtao Huang, Yunpeng Ji, Nir Navon, Hadrien Kurkjian   +4 more
wiley   +1 more source

Mapping a cloud of ultracold atoms onto a miniature storage ring

, 2004
We describe how to realize magnetic and magneto-optical confinement of ultracold atoms in a torus with adjustable diameter and how an elliptical cloud of ultracold atoms can be adiabatically transformed to have a toroidal shape.
Andersson, Arnold, Bromley, Das, Das, Denschlag, Duan, Hänsel, Leonhardt, Muryshev, Olshanii, Ott, Oudenaarden, Pashkin, Petrov, Reichel, Rooijakkers, Sauer, Simmonds, Strecker, Tian, Townsend, Vengalattore, Wal, Wright, Zobay   +25 more
core   +1 more source

Low‐Energy Atomic Scattering: S‐Wave Relation Between the Interaction Potential and the Phase Shift

Annalen der Physik, Volume 537, Issue 11, November 2025.
The validity of the on‐shell approximation for s‐wave scattering is examined across one, two, and three dimensions using exactly solvable model interaction potentials. By comparing exact and approximate s‐wave components of the interaction potential, the analysis reveals that the approximation improves with increasing momentum and decreasing ...
Francesco Lorenzi, Luca Salasnich
wiley   +1 more source

Engineering thermal reservoirs for ultracold dipole–dipole-interacting Rydberg atoms

New Journal of Physics, 2018
We consider an open quantum system of ultracold Rydberg atoms. The system part consists of resonant dipole–dipole-interacting Rydberg states. The environment part is formed by ‘three-level atoms’: each atom has a ground state, a short-lived excited state,
D W Schönleber, C D B Bentley, A Eisfeld   +2 more
doaj   +1 more source

An atomic interface between microwave and optical photons

, 2012
A complete physical approach to quantum information requires a robust interface among flying qubits, long-lifetime memory and computational qubits. Here we present a unified interface for microwave and optical photons, potentially connecting engineerable
Hafezi, M., Kim, Z., Lev., B. L., Orozco, L. A., Rolston, S. L., Taylor, J. M.   +5 more
core   +1 more source

Coherence, Transport, and Chaos in 1D Bose–Hubbard Model: Disorder vs. Stark Potential

Fortschritte der Physik, Volume 73, Issue 11, November 2025.
Quantum coherence and criticality in finite Bose–Hubbard chains are investigated using exact diagonalization. Thermal fluctuations, Stark potential, and disorder reshape coherence, visibility, and superfluid response. Finite‐size systems show signatures of quantum criticality, with disorder suppressing global superfluidity but preserving local ...
Asad Ali, M.I. Hussain, Saif Al‐Kuwari, M. T. Rahim, H. Kuniyil, Seyed Mohammad Hosseiny, Jamileh Seyed‐Yazdi, Hamid Arian Zad, Saeed Haddadi   +8 more
wiley   +1 more source