Acoustic and optical properties of a fast-spinning dielectric nanoparticle

Hümmer, Daniel; Lampert, René; Kustura, Katja; Maurer, Patrick; Gonzalez-Ballestero, Carlos; Romero‐Isart, Oriol

doi:10.1103/physrevb.101.205416

Cited by 18 publications

(9 citation statements)

References 50 publications

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“…The dominant sources of p ± ac are the inherent polarizability of the MS, expected to be O(1 × 10 −2 e µm/(V/m)), and the oscillations of the dipole moment normal to the plane of rotation driven by E ac . Those two sources will be investigated in future work, possibly by inducing a change in the polarizability due to faster rotation [49], and/or by applying E ac in the plane of rotation.…”

Section: Resultsmentioning

confidence: 99%

A background-free optically levitated charge sensor

Priel¹,

Fieguth²,

Blakemore³

et al. 2021

Preprint

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Optically levitated macroscopic objects are a powerful tool in the field of force sensing, owing to high sensitivity, absolute force calibration, environmental isolation and the advanced degree of control over their dynamics that have been achieved. However, limitations arise from the spurious forces caused by electrical polarization effects that, even for nominally neutral objects, affect the force sensing because of the interaction of dipole moments with gradients of external electric fields. In this paper we introduce a new technique to model and eliminate dipole moment interactions limiting the performance of sensors employing levitated objects. This process leads to the first noise-limited measurement with a sensitivity of 3.3 × 10 −5 e. As a demonstration, this is applied to the search for unknown charges of a magnitude much below that of an electron or for exceedingly small unbalances between electron and proton charges. The absence of remaining systematic biases, enables true discovery experiments, with sensitivities that are expected to improve as the system noise is brought down to or beyond the quantum limit. As a by-product of the technique, the electromagnetic properties of the levitated objects can also be measured on an individual basis.

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Section: Resultsmentioning

confidence: 99%

A background-free optically levitated charge sensor

Priel¹,

Fieguth²,

Blakemore³

et al. 2021

Preprint

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“…Fast rotations enhance the transverse laser confinement through the gyroscope effect (Box 1). The maximal rotation speed is determined by gas damping [3,4,[30][31][32] and ultimately by material stresses [33]. Experimentally demonstrated rotation rates reach GHz-frequencies [5,6,8,9], where centrifugal forces start deforming the particle.…”

Section: A Aligning and Spinning Microscale Particlesmentioning

confidence: 99%

Quantum rotations of nanoparticles

Stickler,

Hornberger,

Kim

2021

Preprint

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“…This provides acoustic modes with extremely long coherence times but also makes them difficult to probe experimentally. Future detection will be possible by means of Brillouin scattering or, in rapidly rotating spheres, by the change in polarizability stemming from centrifugal elastic deformation [177]. In optical traps, this deformation would additionally give rise to a complex dynamical coupling between rotation, motion, and acoustic field, which could shed light on the motional decoherence induced by internal vibrations.…”

Section: Future Research Directionsmentioning

confidence: 99%

Levitodynamics: Levitation and control of microscopic objects in vacuum

Gonzalez-Ballestero,

Aspelmeyer,

Novotny

et al. 2021

Preprint

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The control of levitated nano-and micro-objects in vacuum is of considerable interest, capitalizing on the scientific achievements in the fields of atomic physics, control theory and optomechanics. The ability to couple the motion of levitated systems to internal degrees of freedom, as well as to external forces and systems, provides opportunities for science and technology. Attractive research directions, ranging from fundamental quantum physics to commercial sensors, have been unlocked by the many recent experimental achievements, including motional ground-state cooling of an optically levitated nanoparticle. We review the status, challenges and prospects of levitodynamics, the mutidisciplinary research devoted to understanding, controlling, and using levitated nano-and micro-objects in vacuum.

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Acoustic and optical properties of a fast-spinning dielectric nanoparticle

Cited by 18 publications

References 50 publications

A background-free optically levitated charge sensor

A background-free optically levitated charge sensor

Quantum rotations of nanoparticles

Levitodynamics: Levitation and control of microscopic objects in vacuum

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