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Solar magnetic fields are closely related to various physical phenomena on the sun, which can be extrapolated with different models from photospheric magnetograms. However, the Open Flux Problem (OFP), the underestimation of the magnetic…

Solar and Stellar Astrophysics · Physics 2024-05-30 Guanglu Shi , Li Feng , Beili Ying , Shuting Li , Weiqun Gan

We present the design and characterization of a dual-mode radiofrequency (rf) cavity, a novel electromagnetic structure with potential benefits such as compactness, efficiency, cost reduction and multifunctionality. The cavity was designed…

Applied Physics · Physics 2024-10-02 Benjamin Sims , David Sims , Sergey V. Baryshev , John W. Lewellen

An effective field model is introduced here within the micromagnetics formulation, to study roughness in magnetic structures, by considering sub-exchange length roughness levels as a perturbation on a smooth structure. This allows the…

Materials Science · Physics 2016-01-20 Serban Lepadatu

The Muon Ionization Cooling Experiment (MICE) at the Rutherford Appleton Laboratory aims to demonstrate $\approx$ 10% ionization cooling of a muon beam by its interaction with low-Z absorber materials followed by restoration of longitudinal…

Accelerator Physics · Physics 2013-12-06 Daniel M. Kaplan

The strong coupling between an emitter and a cavity is significant for advancing quantum networks. Due to their long optical and spin coherence times, rare-earth ions (REIs) represent a compelling platform for quantum networks. However,…

Quantum Physics · Physics 2025-04-15 Quanshen Shen , Wentao Ji , Junyu Guan , Li Qian , Zihua Chai , ChangKui Duan , Ya Wang , Kangwei Xia

We propose a cavity based laser cooling and trapping scheme, providing tight confinement and cooling to very low temperatures, without degradation at high particle densities. A bidirectionally pumped ring cavity builds up a resonantly…

Quantum Physics · Physics 2009-11-10 Th. Elsaesser , B. Nagorny , A. Hemmerich

Extrapolations of line-of-sight photospheric field measurements predict radial interplanetary magnetic field (IMF) strengths that are factors of ~2--4 too low. To address this "open flux problem,'' we reanalyze the magnetograph measurements…

Solar and Stellar Astrophysics · Physics 2022-10-05 Y. -M. Wang , R. K. Ulrich , J. W. Harvey

Hybridizing collective spin excitations and a cavity with high cooperativity provides a new research subject in the field of cavity quantum electrodynamics and can also have potential applications to quantum information. Here we report an…

Quantum Physics · Physics 2015-12-04 Dengke Zhang , Xin-Ming Wang , Tie-Fu Li , Xiao-Qing Luo , Weidong Wu , Franco Nori , J. Q. You

We study theoretically the optical properties of an exciton in a two-dimensional ring threaded by a magnetic flux. We model the quantum ring by a confining potential that can be continuously tuned from strictly one-dimensional to truly…

Mesoscale and Nanoscale Physics · Physics 2011-12-05 C. González-Santander , F. Domínguez-Adame , R. A. Römer

High impedance RF coils, such as self-decoupled coils, reduce the electromagnetic coupling between the coil elements and eliminates the use of complex decoupling technologies. Although the high impedance design promises excellent decoupling…

Medical Physics · Physics 2022-05-31 Aditya Bhosale , Xiaoliang Zhang

The article explores the ion flux response of a capacitor configuration to an alternating voltage. The model system comprises a symmetric binary electrolyte confined between plan-parallel capacitor plates. The AC response is investigated…

Chemical Physics · Physics 2018-10-03 Sonja Babel , Michael Eikerling , Hartmut Löwen

The subject of the present theoretical and experimental investigations is the effect of the external magnetic field induction on dark current and a possibility of breakdown. The generalization of the Fowler-Nordheim equation makes it…

Accelerator Physics · Physics 2019-10-04 S. Lebedynskyi , O. Karpenko , R. Kholodov , V. Baturin , Ia. Profatilova , N. Shipman , W. Wuensch

We present results from a theoretical and experimental study of spin-splitting in small open lateral quantum dots (i.e. in the regime when the dot is connected to the reservoirs via leads that support one or more propagating modes). We…

Mesoscale and Nanoscale Physics · Physics 2008-04-04 M. Evaldsson , I. V. Zozoulenko , M. Ciorga , P. Zawadzki , A. S. Sachrajda

Power storage devices such as batteries are a crucial part of modern technology. The development and use of batteries has accelerated in the past decades, yet there are only a few techniques that allow gathering vital information from…

We describe how sideband cooling techniques may be applied to large spin ensembles in magnetic resonance. Using the Tavis-Cummings model in the presence of a Rabi drive, we solve a Markovian master equation describing the joint spin-cavity…

Quantum Physics · Physics 2014-02-25 Christopher J. Wood , Troy W. Borneman , David G. Cory

The non-local dielectric response theory is extended to describe oblique reflection of light from quantum wells subjected to the magnetic field. This allows us to calculate the dispersion and polarization of the exciton-polariton modes in…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 D. D. Solnyshkov , M. M. Glazov , I. A. Shelykh , A. V. Kavokin , E. L. Ivchenko , G. Malpuech

In this work we realize a narrow spectroscopic feature using a technique that we refer to as magnetically-induced optical transparency. A cold ensemble of $^{88}$Sr atoms interacts with a single mode of a high-finesse optical cavity via the…

Atomic Physics · Physics 2017-07-05 Matthew N. Winchester , Matthew A. Norcia , Julia R. K. Cline , James K. Thompson

In this work, a sensitivity of the rate of relaxation of ground-state atomic coherences to magnetic-field inhomogeneities is studied. Such coherences give rise to many interesting phenomena in light-atom interactions, and their lifetimes…

Classical Physics · Physics 2009-11-13 S. Pustelny , D. F. Jackson Kimball , S. M. Rochester , V. V. Yashchuk , D. Budker

A novel magnetic interference effect is proposed for a neutral, but polarizable exciton in a quantum ring with a finite width. The magnetic interference effect originates from the nonzero dipole moment in the exciton. The ground state of…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 S. E. Ulloa , A. O. Govorov , A. V. Kalameitsev , R. Warburton , K. Karrai

We have investigated the field-angle behaviors of magnetic excitations under an in-plane magnetic field for proximate Kitaev systems. By employing the exact diagonalization method in conjunction with the linear spin wave theory, we have…

Strongly Correlated Electrons · Physics 2021-10-15 Beom Hyun Kim
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