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Atom interferometers deployed in space are excellent tools for high precision measurements, navigation, or Earth observation. In particular, differential interferometric setups feature common-mode noise suppression and enable reliable…

We propose and demonstrate a radio-frequency atomic magnetometer with sub-Doppler laser cooled rubidium-87. With a simple and compact design, our system demonstrates a sensitivity of $330~pT/\sqrt{Hz}$ in an unshielded environment, thus…

We present a portable optically pumped magnetometer instrument for ultra-sensitive measurements within the Earth's magnetic field. The central part of the system is a sensor head operating a MEMS-based Cs vapor cell in the light-shift…

We have performed measurements of the temperature dependence of the magnetoresistance up to 9 T in bulk single crystals of UPt3 with the magnetic field along the b axis, the easy magnetization axis. We have confirmed previous results for…

Strongly Correlated Electrons · Physics 2008-07-03 T. M. Lippman , J. P. Davis , H. Choi , J. Pollanen , W. P. Halperin

Several on-going and future experiments use a Stokes polarimeter (i.e. a rotating wave plate followed by a steady polarizer and by an unpolarized detector) to measure the small polarized component of the Cosmic Microwave Background. The…

Instrumentation and Methods for Astrophysics · Physics 2010-06-17 Maria Salatino , Paolo de Bernardis

Some of the most sensitive methods of measuring magnetic fields utilize interactions of resonant light with atomic vapor. Recent developments in this vibrant field are improving magnetometers in many traditional areas such as measurement of…

Atomic Physics · Physics 2015-06-26 D. Budker , M. V. Romalis

The detection of environmental magnetic fields is well established by optically pumped atomic magnetometers. Another focus of magnetometry can be the research on magnetic or spin-active solid-state samples. Here we introduce a simple and…

Atomic Physics · Physics 2017-03-08 Daniel Arnold , Steven Siegel , Emily Grisanti , Jörg Wrachtrup , Ilja Gerhardt

We present a novel approach allowing an optically pumped magnetometer (OPM) to be operated within Earth's magnetic field as a vector magnetometer whose sensitive axis can be freely defined. This approach enables the measurement of any…

Instrumentation and Detectors · Physics 2024-08-20 Thomas Schönau , Theo Scholtes , Florian Wittkämper , Alexander Sekels , Stefan Hiebel , Gregor Oelsner , Ronny Stolz

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

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

A detailed study about magnetic sensing techniques based on anisotropic magnetoresistive sensors shows that the technology is suitable for low-frequency space applications like the eLISA mission. Low noise magnetic measurements at the…

Instrumentation and Methods for Astrophysics · Physics 2016-04-29 I. Mateos , J. Ramos-Castro , A. Lobo

The full sky cosmic microwave background polarization field can be decomposed into `electric' and `magnetic' components. Working in harmonic space we construct magnetic variables that can be measured from observations over only a portion of…

Astrophysics · Physics 2007-05-23 Antony Lewis , Anthony Challinor , Neil Turok

Atomic magnetometers have very high absolute precision and sensitivity to magnetic fields but suffer from a fundamental problem: the vectorial or tensorial interaction of light with atoms leads to "dead zones", certain orientations of…

Atomic Physics · Physics 2015-05-14 A. Ben-Kish , M. V. Romalis

We experimentally demonstrate that a squeezed probe optical field can improve the sensitivity of the magnetic field measurements based on nonlinear magneto-optical rotation (NMOR) with an amplitude-modulated pump when compared to a coherent…

Quantum Physics · Physics 2023-07-19 Jiahui Li , Irina Novikova

On a basis of extensive analytical and numerical studies we show that a linear-polarized microwave field creates a stationary magnetization in mesoscopic ballistic quantum dots with two-dimensional electron gas being at a thermal…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. D. Chepelianskii , D. L. Shepelyansky

We demonstrate a proof-of-principle magnetometer that relies on the active oscillation of a cold atom Raman laser to continuously map a field-sensitive atomic phase onto the phase of the radiated light. We demonstrate wideband sensitivity…

Atomic Physics · Physics 2015-06-11 Joshua M. Weiner , Kevin C. Cox , Justin G. Bohnet , Zilong Chen , James K. Thompson

Vector magnetometry was studied using the electromagnetically induced transparency (EIT) with linear $\perp$ linear ($lin \perp lin$) polarization of the probe and the pump beams in $^{87}Rb$ - $D_2$ transition. The dependence of the EIT on…

Quantum Physics · Physics 2019-07-03 Bankim Chandra Das , Arpita Das , Dipankar Bhattacharyya , Sankar De

In this study we present a new method of measuring magnetostriction with an atomic force microscope adapted for the application magnetic fields. The experiment allows us to visualise, in an elegant and educational way how the lateral…

Materials Science · Physics 2007-05-23 A. C. Papageorgopoulos , H. Wang , C. Guerrero , N. Garcia

The possibility of a polarization sounding of the pulsar magnetosphere is examined, using intrinsic pulsar emission as a probe signal, for modern radio telescopes operating in the meter and decameter wavelength range. Different models of…

Astrophysics of Galaxies · Physics 2015-06-11 O. M. Ulyanov , A. I. Shevtsova , A. A. Seredkina

Alignment-based optically pumped magnetometers (OPMs) are capable of measuring oscillating magnetic fields with high sensitivity in the fT/sqrt(Hz) range. Until now, alignment-based magnetometers have only used paraffin-coated vapour cells…

Applied Physics · Physics 2023-06-30 L. M. Rushton , L. Elson , A. Meraki , K. Jensen