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The inductive response of an object to an oscillating magnetic field reveals information about its electrical conductivity and magnetic permeability. Here we introduce a technique that uses measurements of the angular, frequency and spatial…

Applied Physics · Physics 2021-11-24 R. Gartman , W. Chalupczak

Optical absorption properties of magnetoexcitons in topological insulator bilayers under a strong magnetic field are theoretically studied. A general analytical formula of optical absorption selection rule is obtained in the noninteracting…

Mesoscale and Nanoscale Physics · Physics 2012-04-19 Zhigang Wang , Zhen-Guo Fu , Ping Zhang

The evanescent field outside an optical nanofiber (ONF) can create optical traps for neutral atoms. We present a non-destructive method to characterize such trapping potentials. An off-resonance linearly polarized probe beam that propagates…

Quantum Physics · Physics 2017-06-09 Pablo Solano , Fredrik K. Fatemi , Luis A. Orozco , S. L. Rolston

We consider conformal vector models which could play the role of a cosmological dark radiation component. We analyse the propagation of gravitational waves in the presence of this vector background and find a suppression in the tensor…

General Relativity and Quantum Cosmology · Physics 2022-09-14 Alfredo D. Miravet , Antonio L. Maroto

A self-oscillating magnetometer based on nonlinear magneto-optical rotation using amplitude-modulated pump light and unmodulated probe light (AM-NMOR) in 87Rb has been constructed and tested towards a goal of airborne detection of magnetic…

Atomic Physics · Physics 2015-05-18 Chris Hovde , Brian Patton , Eric Corsini , James Higbie , Dmitry Budker

We present a systematic derivation of the dynamical polarizability and the ac Stark shift of the ground and excited states of atoms interacting with a far-off-resonance light field of arbitrary polarization. We calculate the scalar, vector,…

Atomic Physics · Physics 2015-03-12 Fam Le Kien , Philipp Schneeweiss , Arno Rauschenbeutel

In general relativity, Maxwell's equations are embedded in curved spacetime through the minimal prescription, but this could change if strong-gravity modifications are present. We show that with a nonminimal coupling between gravity and a…

General Relativity and Quantum Cosmology · Physics 2019-02-27 Lorenzo Annulli , Vitor Cardoso , Leonardo Gualtieri

Vector beams (VBs) are fully polarized beams with spatially varying polarization distributions, and they have found widespread use in numerous applications such as microscopy, metrology, optical trapping, nano-photonics, and communications.…

Quantum Physics · Physics 2024-02-23 Xiaoqin Gao , Yingwen Zhang , Alessio D'Errico , Alicia Sit , Khabat Heshami , Ebrahim Karimi

We report on the experimental observation of incoherently coupled dark vector soliton trapping in a fiber laser. Dark vector solitons along the two orthogonal polarization directions though with large difference in central frequency, energy…

Optics · Physics 2009-05-07 H. Zhang , D. Y. Tang , L. M. Zhao , X. Wu , Q. L Bao , K. P. Loh

This article is designed as a step-by-step guide to optically pumped magnetometers based on alkali atomic vapor cells. We begin with a general introduction to atomic magneto-optical response, as well as expected magnetometer performance…

Atomic Physics · Physics 2023-03-01 Anne Fabricant , Irina Novikova , Georg Bison

The ability to image electromagnetic fields holds key scientific and industrial applications, including electromagnetic compatibility, diagnostics of high-frequency devices, and experimental scientific work involving field interactions.…

Surface based geometries of microfabricated wires or patterned magnetic films can be used to magnetically trap and manipulate ultracold neutral atoms or Bose-Einstein condensates. We investigate the magnetic properties of such atom chips…

Atomic Physics · Physics 2009-11-13 M. Volk , S. Whitlock , B. V. Hall , A. I. Sidorov

Light is a union of electric and magnetic fields, and nowhere is their complex relationship more evident than in the near fields of nanophotonic structures. There, complicated electric and magnetic fields varying over subwavelength scales…

Optics · Physics 2018-03-28 B. le Feber , J. E. Sipe , M. Wulf , L. Kuipers , N. Rotenberg

The optical interaction of light and matter is modeled as an oscillating dipole in a plane wave. We analyze absorption, scattering and extinction for this system by the energy flow, which is depicted by streamlines of the Poynting vector.…

Optics · Physics 2018-09-05 Moritz Striebel , Jeff F. Young , Jörg Wrachtrup , Ilja Gerhardt

We propose a cross-correlation method for the searches of ultra-light fields, in particular, with a space network of atomic sensors. The main motivation of the approach is cancellation of uncorrelated noises in the observation data and…

Cosmology and Nongalactic Astrophysics · Physics 2018-10-01 Tigran Kalaydzhyan , Nan Yu

We report an all-optical atomic vector magnetometer using dual Bell-Bloom optical pumping beams in a Rb vapor cell. This vector magnetometer consists of two orthogonal optical pumping beams, with amplitude modulations at $^{85}$Rb and…

Atomic Physics · Physics 2020-09-28 Bo Cai , Chuanpeng Hao , Zheru Qiu , Qianqian Yu , Wei Xiao , Dong Sheng

Vector beams are often regarded as non-separable superpositions of spatial and polarization degrees of freedom that satisfy the wave equation. This interpretation ties their polarization structure to their spatial shape. Here, we introduce…

We describe an atom interferometer to study the coherence of atoms reflected from an evanescent wave mirror. The interferometer is sensitive to the loss of phase coherence induced by the defects in the mirror. The results are consistent…

We evaluate the three-photon vertex functions at order $B$ and $B^{2}$ in a weak constant magnetic field at finite temperature and density with on shell external lines. Their application to the study of the photon splitting process leads to…

High Energy Physics - Phenomenology · Physics 2009-11-07 J. M. Martinez Resco , M. A. Valle Basagoiti

Optical absorption measurements are used to probe the spin polarization in the integer and fractional quantum Hall effect regimes. The system is fully spin polarized only at filling factor $\nu=1$ and at very low temperatures($\sim40$ mK).…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 P. Plochocka , J. M. Schneider , D. K. Maude , M. Potemski , M. Rappaport , V. Umansky , I. Bar-Joseph , J. G. Groshaus , Y. Gallais , A. Pinczuk