Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Chałupczak P"'
Publikováno v:
Sensors 2024, 24(20), 6657
Measurements monitoring the inductive coupling between oscillating radio-frequency magnetic fields and objects of interest create versatile platforms for non-destructive testing. The benefits of ultra low frequency measurements, i.e., below 3 kHz, ar
Externí odkaz:
http://arxiv.org/abs/2409.17935
Autor:
Zipfel, J. D., Bevington, P., Wright, L., Chalupczak, W., Quick, G., Steele, B., Nicholson, J., Guarrera, V.
Atom spin sensors occupy a prominent position in the scenario of quantum technology, as they can combine precise measurements with appealing miniature packages which are crucial for many applications. In this work, we report on the design and realiza
Externí odkaz:
http://arxiv.org/abs/2402.16695
Collective spins in thermal gases are at the core of a multitude of science and technology applications. In most of them, the random thermal motion of the particles is considered detrimental as it is responsible for decoherence and noise. In conditio
Externí odkaz:
http://arxiv.org/abs/2402.16750
Publikováno v:
Phys. Rev. Applied 22, 014002 (2024)
We explore properties of the radio-frequency atomic magnetometer, specifically its sensitivity to the polarisation of an oscillating magnetic field. This aspect can be particularly relevant to configurations where the sensor monitors fields created b
Externí odkaz:
http://arxiv.org/abs/2401.02891
Autor:
Gartman, R., Chalupczak, W.
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 dependenc
Externí odkaz:
http://arxiv.org/abs/2109.04074
Publikováno v:
Phys. Rev. Research 3, 032015 (2021)
Spin noise spectroscopy is emerging as a powerful technique for studying the dynamics of various spin systems also beyond their thermal equilibrium and linear response. Here, we study spin fluctuations of room-temperature neutral atoms in a Bell-Bloo
Externí odkaz:
http://arxiv.org/abs/2012.12617
Publikováno v:
Phys. Rev. A 102, 032804 (2020)
Co-magnetometers have been validated as valuable components of the atomic physics toolbox in fundamental and applied physics. So far, the explorations have been focused on systems involving nuclear spins. Presented here is a demonstration of an activ
Externí odkaz:
http://arxiv.org/abs/1911.11707
Publikováno v:
Phys. Rev. A 101, 013436 (2020)
Traditionally, atomic spin orientation is achieved by the transfer of angular momentum from polarised light to an atomic system. We demonstrate the mechanism of orientation generation in room-temperature caesium vapours that combines three elements:
Externí odkaz:
http://arxiv.org/abs/1910.06131
Publikováno v:
Phys. Rev. A 98, 061401(R) (2018)
Spin-exchange collisions in hot vapours are generally regarded as a decoherence mechanism. In contrast, we show that linear and non-linear spin-exchange coupling can lead to the generation of atomic coherence in a Bell-Bloom magnetometer. In particul
Externí odkaz:
http://arxiv.org/abs/1903.05605
Publikováno v:
Phys. Rev. Lett. 123, 033601 (2019)
We report on the use of parametric excitation to coherently manipulate the collective spin state of an atomic vapour at room temperature. Signatures of the parametric excitation are detected in the ground-state spin evolution. These include the excit
Externí odkaz:
http://arxiv.org/abs/1903.00212