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We present a detailed analysis of the usefulness of ultracold atomic collisions for sensing the strength of an external magnetic field as well as its spatial gradient. The core idea of the sensor, which we recently proposed in K. Jachymski…

Quantum Physics · Physics 2018-06-11 Tomasz Wasak , Krzysztof Jachymski , Tommaso Calarco , Antonio Negretti

Any means to control gravity like electromagnetism is currently out of reach by many orders of magnitude even under extreme laboratory conditions. Some often poorly executed experiments or pseudoscience theories appear from time to time…

General Physics · Physics 2024-08-26 Martin Tajmar , Matthias Kößling , Oliver Neunzig

Time-resolved Faraday rotation spectroscopy is currently exploited as a powerful technique to probe spin dynamics in semiconductors. We propose here an all-optical approach to geometrically manipulate electron spin and to detect the…

Quantum Physics · Physics 2009-11-07 Xin-Qi Li , Cheng-Yong Hu , Li-Xiang Cen , Hou-Zhi Zheng , YiJing Yan

Rotation estimation plays a fundamental role in many computer vision and robot tasks. However, efficiently estimating rotation in large inputs containing numerous outliers (i.e., mismatches) and noise is a recognized challenge. Many robust…

Computer Vision and Pattern Recognition · Computer Science 2025-02-11 Taosi Xu , Yinlong Liu , Xianbo Wang , Zhi-Xin Yang

The mathematical foundation is laid for a relatively new type of magnets generating uniform transverse field - tilted coil magnets. These consist of concentric nested solenoidal coils with elliptical turns tilted at a certain angle to the…

Accelerator Physics · Physics 2007-05-23 A. M. Akhmeteli , A. V. Gavrilin

The combination of high sensitive superconducting quantum interference device (SQUID) with high quality nanoparticles allowed to check the simplest classical model describing the magnetisation reversal by uniform rotation which were…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 W. Wernsdorfer , C. Thirion , N. Demoncy , H. Pascard , D. Mailly

Whether quantum physics is universally valid is an open question with far-reaching implications. Intense research is therefore invested into testing the quantum superposition principle with ever heavier and more complex objects. Here we…

We describe a room-temperature alkali-metal atomic magnetometer for detection of small, high frequency magnetic fields. The magnetometer operates by detecting optical rotation due to the precession of an aligned ground state in the presence…

Atomic Physics · Physics 2010-10-12 M. P. Ledbetter , V. M. Acosta , S. M. Rochester , D. Budker , S. Pustelny , V. V. Yashchuk

We report on the design and performance of a highly sensitive combined $^3$He/Cs magnetometer for the absolute measurement of magnetic fields. The magnetometer relies on the magnetometric detection of the free spin precession of nuclear…

Superconductors used in magnet technology could carry extreme currents because of their ability to keep the magnetic flux motionless. The dynamics of the magnetic flux interaction with superconductors is controlled by this property. The…

Accelerator Physics · Physics 2015-01-29 F Gömöry

The capability to probe the dispersion of elementary spin, charge, orbital, and lattice excitations has positioned resonant inelastic x-ray scattering (RIXS) at the forefront of photon science. In this work, we will investigate how RIXS can…

Superconductivity · Physics 2016-05-13 Pasquale Marra

The all-sky survey of Faraday rotation, a Key Science Project of the planned Square Kilometre Array, will accumulate tens of millions of rotation measure measurements toward background radio sources and will provide a unique database for…

Astrophysics · Physics 2009-11-11 Rainer Beck

Detection of arbitrarily rotated objects is a challenging task due to the difficulties of locating the multi-angle objects and separating them effectively from the background. The existing methods are not robust to angle varies of the…

Computer Vision and Pattern Recognition · Computer Science 2017-11-28 Lei Liu , Zongxu Pan , Bin Lei

The magnetic sensing at nanoscale level is a promising and interesting research topic of nanoscience. Indeed, magnetic imaging is a powerful tool for probing biological, chemical and physical systems. The study of small spin cluster, like…

Superconductivity · Physics 2016-01-12 Carmine Granata , Antonio Vettoliere

Transition Edge Sensors are ultra-sensitive superconducting detectors with applications in many areas of research, including astrophysics. The device consists of a superconducting thin film, often with additional normal metal features, held…

Instrumentation and Methods for Astrophysics · Physics 2018-05-18 R. C. Harwin , D. J. Goldie , S. Withington , P. Khosropanah , L. Gottardi , J. -R. Gao

The surface impedance of a superconductor changes when energy is absorbed and Cooper pairs are broken to produce single electron (quasiparticle) excitations. This change may be sensitively measured using a thin-film resonant circuit called…

We introduce a vector atomic magnetometer that employs a fast-rotating magnetic field applied to a pulsed $^{87}$Rb scalar atomic magnetometer. This approach enables simultaneous measurements of the total magnetic field and its two polar…

Quantum Physics · Physics 2025-02-07 Tao Wang , Wonjae Lee , Mark Limes , Tom Kornack , Elizabeth Foley , Michael Romalis

The joint analysis of the Dispersion and Faraday Rotation Measure from distant, polarised Fast Radio Bursts may be used to put constraints on the origin and distribution of extragalactic magnetic fields on cosmological scales. While the…

Cosmology and Nongalactic Astrophysics · Physics 2018-07-24 F. Vazza , M. Brüggen , P. M. Hinz , D. Wittor , N. Locatelli , C. Gheller

We demonstrate remote detection of rotating machinery, using an atomic magnetometer at room temperature and in an unshielded environment. The system relies on the coupling of the AC magnetic signature of the target with the spin-polarized,…

Instrumentation and Detectors · Physics 2017-01-20 Luca Marmugi , Lorenzo Gori , Sarah Hussain , Cameron Deans , Ferruccio Renzoni

We estimate the conjectured interaction between the Earth gravitational field and a superconductor immersed in external, static electric and magnetic field. The latter is close to the sample upper critical field and generates the presence…

General Relativity and Quantum Cosmology · Physics 2022-02-04 Giovanni Ummarino , Antonio Gallerati