Development and characterization of atom chip for magnetic trapping of atoms

Singh, Vivek; Tiwari, V. B.; Chaudhary, A.; Shukla, Rahul; Mukherjee, C.; Mishra, S. R.

doi:10.1063/5.0130749

Cited by 6 publications

(3 citation statements)

References 29 publications

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“…Cold-atom generation has been demonstrated by employing a single laser beam reflected from different cell geometry structures [258,259], while research in this direction is still going on, with the goal of investigating alternative cell geometries to reduce overall size [260]. That being said, it is important to note that, while there are promising opportunities for compact instrumentation [261], via micro-fabrication techniques involving optical elements [262][263][264] or via the development of grating chips [265,266] for on-chip magnetic confinement of laser-cooled atoms, systems typically require traps that need liter-range volume loading from vacuum apparatuses. The miniaturization of ultra-high vacuum (UHV) vacuum packages [267] remains limited and many cases constrained by conventional bulk machining methods used for chamber materials, compromising partially the scalability potential provided by micro-fabrication techniques so far.…”

Section: Miniaturization and Atom Chips Technologymentioning

confidence: 99%

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Atomic Quantum Technologies for Quantum Matter and Fundamental Physics Applications

Yago Malo,

Lepori,

Gentini

et al. 2024

Technologies

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Physics is living an era of unprecedented cross-fertilization among the different areas of science. In this perspective review, we discuss the manifold impact that state-of-the-art cold and ultracold-atomic platforms can have in fundamental and applied science through the development of platforms for quantum simulation, computation, metrology and sensing. We illustrate how the engineering of table-top experiments with atom technologies is engendering applications to understand problems in condensed matter and fundamental physics, cosmology and astrophysics, unveil foundational aspects of quantum mechanics, and advance quantum chemistry and the emerging field of quantum biology. In this journey, we take the perspective of two main approaches, i.e., creating quantum analogues and building quantum simulators, highlighting that independently of the ultimate goal of a universal quantum computer to be met, the remarkable transformative effects of these achievements remain unchanged. We wish to convey three main messages. First, this atom-based quantum technology enterprise is signing a new era in the way quantum technologies are used for fundamental science, even beyond the advancement of knowledge, which is characterised by truly cross-disciplinary research, extended interplay between theoretical and experimental thinking, and intersectoral approach. Second, quantum many-body physics is unavoidably taking center stage in frontier’s science. Third, quantum science and technology progress will have capillary impact on society, meaning this effect is not confined to isolated or highly specialized areas of knowledge, but is expected to reach and have a pervasive influence on a broad range of society aspects: while this happens, the adoption of a responsible research and innovation approach to quantum technologies is mandatory, to accompany citizens in building awareness and future scaffolding. Following on all the above reflections, this perspective review is thus aimed at scientists active or interested in interdisciplinary research, providing the reader with an overview of the current status of these wide fields of research where cold and ultracold-atomic platforms play a vital role in their description and simulation.

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Section: Miniaturization and Atom Chips Technologymentioning

confidence: 99%

“…The substantial progress made in this miniaturization effort is described in depth in the reviews [266,268,269].…”

Section: Miniaturization and Atom Chips Technologymentioning

confidence: 99%

Atomic Quantum Technologies for Quantum Matter and Fundamental Physics Applications

Yago Malo,

Lepori,

Gentini

et al. 2024

Technologies

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“…These substrate materials of atom chips provide different solutions for the design and integration usage of compact MOTs applied to CAGS. The material for the wiring pattern also needs to meet some specific requirements, including high adhesion properties with a substrate, high current-carrying capacity, and thermal stability [109][110][111]. To capture atoms with atom chips, a load current of over 1 A is usually required to obtain a sufficiently large magnetic gradient.…”

Section: Materials and Fabrication Technologies Of Different Atom Chipsmentioning

confidence: 99%

Review of Atom Chips for Absolute Gravity Sensors

Shi

et al. 2023

Sensors

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As a powerful tool in scientific research and industrial technologies, the cold atom absolute gravity sensor (CAGS) based on cold atom interferometry has been proven to be the most promising new generation high-precision absolute gravity sensor. However, large size, heavy weight, and high–power consumption are still the main restriction factors of CAGS being applied for practical applications on mobile platforms. Combined with cold atom chips, it is possible to drastically reduce the complexity, weight, and size of CAGS. In this review, we started from the basic theory of atom chips to chart a clear development path to related technologies. Several related technologies including micro-magnetic traps, micro magneto–optical traps, material selection, fabrication, and packaging methods have been discussed. This review gives an overview of the current developments in a variety of cold atom chips, and some actual CAGS systems based on atom chips are also discussed. We summarize by listing some of the challenges and possible directions for further development in this area.

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Bloch point nanospheres for the design of magnetic traps

Tejo,

Zambrano-Rabanal,

Carvalho-Santos

et al. 2023

Applied Physics Letters

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Through micromagnetic simulations, this work analyzes the possibility of using an array of magnetic nanospheres hosting Bloch points (BPs) to compose a system with the features of a magnetic trap (MT). We show that a BP can be nucleated as a metastable configuration in a wide range of the nanosphere radius compared to a quasi-uniform and vortex state. We also show that the stabilized BP generates a quadrupolar magnetic field outside the nanosphere. Based on this fact, we analyze the field profile of different arrays of these nanospheres, showing that the obtained magnetic field profiles share the needed features to compose MTs. Some highlights of using an array of Bloch point nanospheres in MTs rely on the magnetic field gradients achieved, which are orders of magnitude higher than similar standard systems, and allow three-dimensional trapping. Our results could be useful in trapping particles through the intrinsic magnetization of ferromagnetic nanoparticles while avoiding the commonly used mechanisms associated with Joule heating.

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Development and characterization of atom chip for magnetic trapping of atoms

Cited by 6 publications

References 29 publications

Atomic Quantum Technologies for Quantum Matter and Fundamental Physics Applications

Atomic Quantum Technologies for Quantum Matter and Fundamental Physics Applications

Review of Atom Chips for Absolute Gravity Sensors

Bloch point nanospheres for the design of magnetic traps

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