Searching spin-mass interaction using a diamagnetic levitated magnetic-resonance force sensor

Xiong, Fei; Wu, Tong; Leng, Yingchun; Li, Rui; Duan, Chang‐Kui; Kong, Xinggong; Huang, Pu; Li, Zhengwei; Gao, Y.; Rong, Xing; Du, Jiangfeng

doi:10.1103/physrevresearch.3.013205

Cited by 9 publications

(3 citation statements)

References 60 publications

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“…Quantum sensors can achieve unprecedented precision in measuring time, [1,2] electric, [3,4] magnetic, [5][6][7] and gravitational fields, [8,9] way beyond the capability of their classical counterparts. They can be manufactured in atomic scales and have found applications in a wide range of fields, from cosmology [10][11][12] to biology. [13][14][15] The precision of estimating an unknown parameter h, encoded in a quantum density matrix ρ(h), is fundamentally bounded by Cramér-Rao inequality as ∆h≥1/…”

Section: Introductionmentioning

confidence: 99%

Long-range interacting Stark many-body probes with super-Heisenberg precision

Yousefjani,

He 何,

Bayat

2023

Chinese Phys. B

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In contrast to interferometry-based quantum sensing, where interparticle interaction is detrimental, quantum many-body probes exploit such interactions to achieve quantum-enhanced sensitivity. In most of the studied quantum many-body probes, the interaction is considered to be short-ranged. Here, we investigate the impact of long-range interaction at various filling factors on the performance of Stark quantum probes for measuring a small gradient field. These probes harness the ground state Stark localization phase transition which happens at an infinitesimal gradient field as the system size increases. Our results show that while superHeisenberg precision is always achievable in all ranges of interaction, the longrange interacting Stark probe reveals two distinct behaviors. First, by algebraically increasing the range of interaction, the localization power enhances and thus the sensitivity of the probe decreases. Second, as the interaction range becomes close to a fully connected graph its effective localization power disappears and thus the sensitivity of the probe starts to enhance again. The super-Heisenberg precision is achievable throughout the extended phase until the transition point and remains valid even when the state preparation time is incorporated in the resource analysis. As the probe enters the localized phase, the sensitivity decreases and its performance becomes size-independent, following a universal behavior. In addition, our analysis shows that lower filling factors lead to better precision for measuring weak gradient fields.

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Section: Introductionmentioning

confidence: 99%

Long-range interacting Stark many-body probes with super-Heisenberg precision

Yousefjani,

He 何,

Bayat

2023

Chinese Phys. B

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“…Optical, electrical, and magnetic levitation are the three types of suspending setups that can all work in a vacuum environment. The magnetic trap with a passive field [43][44][45][46][47][48][49][50][51][52][53][54][55][56] is simpler than the optical trap with lasers [57][58][59][60] and the electrical trap with radio-frequency modulation of a high voltage electric field [31][32][33][34]. Photon recoil, damage to suspended particles caused by the laser's thermal effect, and clamping losses can all be avoided via magnetostatic field levitation [56].…”

Section: Introductionmentioning

confidence: 99%

Enhanced spin-mechanical interaction with levitated micromagnets

Pan¹,

Hei²,

Dong³

et al. 2022

Preprint

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Spin-mechanical hybrid systems have been widely used in quantum information processing. However, the spin-mechanical interaction is generally weak, making it a critical challenge to enhance the spin-mechanical interaction into the strong coupling or even ultra-strong coupling regime. Here, we propose a protocol that can significantly enhance the spin-mechanical coupling strength with a diamond spin vacancy and a levitated micromagnet. A driving electrical current is used to modulate the mechanical motion of the levitated micromagnet, which induces a two-phonon drive and can exponentially enhance the spin-phonon and phonon-medicated spin-spin coupling strengths. Furthermore, a high fidelity Schrödinger cat state and an unconventional 2-qubit geometric phase gate with high fidelity and faster gate speed can be achieved using this hybrid system. This protocol provides a promising platform for quantum information processing with NV spins coupled to levitated micromagnets.

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“…The promises of this schemes have been supported by recent experiments that reported trapped particles cooled to the quantum regime [7][8][9][10]. Active development of force sensors are in progress and tests of various models of fundamental physics have also been proposed using various platforms [11][12][13]. To push these developments further and to enable operate the mechanical oscillator in the quantum regime, coupling the dynamics of the levitated system to a single intrinsically quantum system, such as ions, atoms, or artificial atoms, has been envisioned [14,15].…”

Section: Introductionmentioning

confidence: 99%

Spin-Mechanics with Nitrogen-Vacancy Centers and Trapped Particles

et al. 2021

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Controlling the motion of macroscopic oscillators in the quantum regime has been the subject of intense research in recent decades. In this direction, opto-mechanical systems, where the motion of micro-objects is strongly coupled with laser light radiation pressure, have had tremendous success. In particular, the motion of levitating objects can be manipulated at the quantum level thanks to their very high isolation from the environment under ultra-low vacuum conditions. To enter the quantum regime, schemes using single long-lived atomic spins, such as the electronic spin of nitrogen-vacancy (NV) centers in diamond, coupled with levitating mechanical oscillators have been proposed. At the single spin level, they offer the formidable prospect of transferring the spins’ inherent quantum nature to the oscillators, with foreseeable far-reaching implications in quantum sensing and tests of quantum mechanics. Adding the spin degrees of freedom to the experimentalists’ toolbox would enable access to a very rich playground at the crossroads between condensed matter and atomic physics. We review recent experimental work in the field of spin-mechanics that employ the interaction between trapped particles and electronic spins in the solid state and discuss the challenges ahead. Our focus is on the theoretical background close to the current experiments, as well as on the experimental limits, that, once overcome, will enable these systems to unleash their full potential.

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Searching spin-mass interaction using a diamagnetic levitated magnetic-resonance force sensor

Cited by 9 publications

References 60 publications

Long-range interacting Stark many-body probes with super-Heisenberg precision

Long-range interacting Stark many-body probes with super-Heisenberg precision

Enhanced spin-mechanical interaction with levitated micromagnets

Spin-Mechanics with Nitrogen-Vacancy Centers and Trapped Particles

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