Mechanical Dissipation Below 
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 with a Cryogenic Diamagnetic Levitated Micro-Oscillator

Leng, Yingchun; Li, Rui; Kong, Xinggong; Xie, Han; Zheng, Di; Yin, Peiran; Xiong, Fei; Wu, Tong; Duan, Chang Kui; Du, Youwei; Yin, Zhang; Huang, Pu; Du, Jiangfeng

doi:10.1103/physrevapplied.15.024061

Cited by 25 publications

(9 citation statements)

References 48 publications

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“…By driving the motion of the source magnet inside the trap, we unwittingly will provide a force which shakes the entire trap on resonance, meaning that passive vibration isolation of the test mass trap, similar to those in Ref. [38,39] is needed, but the source mass trap must be rigidly clamped to the Earth. Approximately 60 dB of isolation is needed for the test mass lead trap to reduce seismic noise below thermal noise.…”

Section: K Was Found To Bementioning

confidence: 99%

Probing modified gravity with magnetically levitated resonators

et al. 2021

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We present an experimental procedure, based on Meissner effect levitation of neodymium ferromagnets, as a method of measuring the gravitational interactions between mg masses. The scheme consists of two superconducting lead traps, with a magnet levitating in each trap. The levitating magnets behave as harmonic oscillators, and by carefully driving the motion of one magnet on resonance with the other, we find that it should be easily possible to measure the gravitational field produced by a 4 mg sphere, with the gravitational attraction from masses as small as 30 µg predicted to be measurable within realistic a realistic measurement time frame. We apply this acceleration sensitivity to one concrete example and show the ability of testing models of modified Newtonian dynamics.

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Section: K Was Found To Bementioning

confidence: 99%

Probing modified gravity with magnetically levitated resonators

et al. 2021

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“…Recent experiments have shown initial steps in this direction by levitating micro-magnets on top of superconductors [12]- [16], diamagnetic particles in strong magnetic fields [4], [17], [18], and superconducting microparticles in millimeter-sized superconducting magnetic traps [19], [20]. Levitating a super-We acknowledge funding from the Knut and Alice Wallenberg foundation through a Wallenberg Academy fellowship (W.W.), the Wallenberg Center for Quantum Technology (WACQT, A.P.)…”

Section: Introductionmentioning

confidence: 99%

A Chip-Based Superconducting Magnetic Trap for Levitating Superconducting Microparticles

Latorre

Paradkar

Hambraeus

et al. 2022

IEEE Trans. Appl. Supercond.

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Magnetically-levitated superconducting microparticles have been recently proposed as a promising platform for performing quantum experiments with particles in the picogram regime. Here, we demonstrate the superconducting technology to achieve chip-based magnetic levitation of superconducting microparticles. We simulate and fabricate a chip-based magnetic trap capable of levitating superconducting particles with diameters from 0.5 µm to 200 µm. The trap consists of two stacked silicon chips, each patterned with a planar multiwinding superconducting coil made of niobium. The two coils generate a magnetic field resembling a quadrupole near the trap center, in which we demonstrate trapping of a spherical 50 µm diameter SnPb microparticle at temperatures of 4 K and 40 mK.

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“…Superconducting levitation is a well known phenomenon and allows levitation of objects of vastly different masses [1]. In the context of quantum experiments with macroscopic objects [2], superconducting levitation can enable a novel experimental platform combining ultra-low mechanical dissipation of levitated particles [3][4][5][6] with the capability to stably trap micrometer-sized objects [7,8]. Theoretical proposals to realize macroscopic quantum superposition states [9], as well as novel ultra-sensitive force and acceleration sensors [10,11], have recently been put forward that exploit these unique features.…”

Section: Introductionmentioning

confidence: 99%

“…Recent experiments have shown initial steps in this direction by levitating micro-magnets on top of superconductors [12][13][14][15][16], diamagnetic particles in strong magnetic fields [4,17,18], and superconducting microparticles in millimeter-sized superconducting magnetic traps [19,20]. Levitating a superconducting particle in a fully chip-based, microfabricated trap is advantageous as it enables high magnetic field gradients through miniaturization [21,22] and a straightforward integration of precisely positioned superconducting circuits for read-out and quantum control of the particle's motion [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A chip-based superconducting magnetic trap for levitating superconducting microparticles

Latorre,

Paradkar,

Hambraeus

et al. 2021

Preprint

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Magnetically-levitated superconducting microparticles have been recently proposed as a promising platform for performing quantum experiments with particles in the picogram regime. Here, we demonstrate the superconducting technology to achieve chip-based magnetic levitation of superconducting microparticles. We simulate and fabricate a chip-based magnetic trap capable of levitating superconducting particles with diameters from 0.5 µm to 200 µm. The trap consists of two stacked silicon chips, each patterned with a planar multi-winding superconducting coil made of niobium. The two coils generate a magnetic field resembling a quadrupole near the trap center, in which we demonstrate trapping of a spherical 50 µm diameter SnPb microparticle at temperatures of 4 K and 40 mK.

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Mechanical Dissipation Below 1μHz with a Cryogenic Diamagnetic Levitated Micro-Oscillator

Cited by 25 publications

References 48 publications

Probing modified gravity with magnetically levitated resonators

Probing modified gravity with magnetically levitated resonators

A Chip-Based Superconducting Magnetic Trap for Levitating Superconducting Microparticles

A chip-based superconducting magnetic trap for levitating superconducting microparticles

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