Manipulating a charged nanoparticle in a Paul trap for ion-assisted levitated optomechanics

Dania, Lorenzo; Bykov, Dmitry S.; Mestres, Pau; Northup, Tracy E.

doi:10.1117/12.2529127

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…Assuming a background gas pressure of 10 −9 mbar of air, we derive a temperature of 14 µK for a cold gas temperature of T C = 10 µK and 2.6 µK at 1 µK. We note that lower background operating pressures in the 10 −11 mbar range have been reached for cold atom and Paul trap experiments [39]. Trap frequencies up to at least 50 kHz appear feasible for these small nanoparticles levitated in a Paul trap [40] where, at a temperature of 1 µK an average phonon occupancy approaching unity could be achieved.…”

Section: Sympathetic Coolingmentioning

confidence: 91%

A levitated atom-nanosphere hybrid quantum system

Hopper,

Barker

2024

New J. Phys.

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Near-field, radially symmetric optical potentials centred around a levitated nanosphere can be used for sympathetic cooling and for creating a bound nanosphere-atom system analogous to a large molecule. We demonstrate that the long range, Coulomb-like potential produced by a single blue detuned field increases the collisional cross-section by eight orders of magnitude, allowing fast sympathetic cooling of a trapped nanosphere to microKelvin temperatures using cold atoms. By using two optical fields to create a combination of repulsive and attractive potentials, we demonstrate that a cold atom can be bound to a nanosphere creating a new levitated hybrid quantum system suitable for exploring quantum mechanics with massive particles.

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Section: Sympathetic Coolingmentioning

confidence: 91%

A levitated atom-nanosphere hybrid quantum system

Hopper,

Barker

2024

New J. Phys.

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“…The ability to detect tiny momentum transfers to nanogram-scale masses is enabled by the extreme sensitivity of recently developed levitated optomechanical systems. Techniques to trap micron or submicron sized masses via optical [15][16][17], magnetic [18][19][20][21], or radio frequency [22][23][24][25] fields have progressed substantially in the last decade [26]. Past work has demonstrated the ability to cool particles with ∼ femtogram masses to μK effective temperatures [27][28][29].…”

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confidence: 99%

Search for Composite Dark Matter with Optically Levitated Sensors

et al. 2020

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Results are reported from a search for a class of composite dark matter models with feeble long-range interactions with normal matter. We search for impulses arising from passing dark matter particles by monitoring the mechanical motion of an optically levitated nanogram mass over the course of several days. Assuming such particles constitute the dominant component of dark matter, this search places upper limits on their interaction with neutrons of α n ≤ 1.2 × 10 −7 at 95% confidence for dark matter masses between 1 and 10 TeV and mediator masses m ϕ ≤ 0.1 eV. Because of the large enhancement of the cross section for dark matter to coherently scatter from a nanogram mass (∼10 29 times that for a single neutron) and the ability to detect momentum transfers as small as ∼200 MeV=c, these results provide sensitivity to certain classes of composite dark matter models that substantially exceeds existing searches, including those employing kilogram-or ton-scale targets. Extensions of these techniques can enable directionally sensitive searches for a broad class of previously inaccessible heavy dark matter candidates.

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Manipulating a charged nanoparticle in a Paul trap for ion-assisted levitated optomechanics

Cited by 2 publications

References 15 publications

A levitated atom-nanosphere hybrid quantum system

A levitated atom-nanosphere hybrid quantum system

Search for Composite Dark Matter with Optically Levitated Sensors

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