Optical and electrical feedback cooling of a silica nanoparticle levitated in a Paul trap

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

doi:10.1103/physrevresearch.3.013018

Cited by 51 publications

(29 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The experimental results (green circles) agree well with the simulation and analytical prediction at all feedback gains with a minimum temperature of 26 ± 6 mK attained. By reducing the pressure further we predict temperatures comparable to those shown in previous experiments using velocity damping on a nanoparticle levitated in a Paul trap [52].…”

Section: Coolingsupporting

confidence: 77%

Performance and limits of feedback cooling methods for levitated oscillators: A direct comparison

2021

View full text Add to dashboard Cite

Cooling the center-of-mass motion is an important tool for levitated optomechanical systems, but it is often not clear which method can practically reach lower temperatures for a particular experiment. We directly compare the parametric and velocity feedback damping methods, which are used extensively for cooling the motion of single trapped particles in a range of traps. By performing experiments on the same particle, and with the same detection system, we demonstrate that velocity damping cools the oscillator to a temperature an order of magnitude lower and is more resilient to imperfect experimental conditions. We show that these results are consistent with analytical limits as well as numerical simulations that include experimental noise.

show abstract

Section: Coolingsupporting

confidence: 77%

Performance and limits of feedback cooling methods for levitated oscillators: A direct comparison

2021

View full text Add to dashboard Cite

show abstract

“…The radio-frequency modulation of a high voltage electric field applied to the trap electrode ensures three-dimensional confinement of charged particles with typical frequencies ranging from 100 Hz to 10 kHz. The center of mass motion of silica nano-particles [32], graphene flakes [33] and nanodiamonds [34] in Paul traps have been cooled to low temperatures under ultra-high vacuum levels using parametric feedback cooling.…”

Section: Trapping Platformsmentioning

confidence: 99%

Spin-Mechanics with Nitrogen-Vacancy Centers and Trapped Particles

et al. 2021

View full text Add to dashboard Cite

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.

show abstract

“…To decrease the temperature further, the detection noise could be improved or the pressure could be reduced further. The additional force noise would have to be removed before reducing the pressure since white, Gaus- [34] with proposals for detection schemes that could potentially reach ∼ 10 −27 m 2 Hz −1 with similar laser parameters to those used in this experiment and a relatively low NA of 0.1 in the detection [53]. With this detection noise at a pressure of 10 −8 mbar, velocity damping could reach a phonon occupancy of n = 0.63 for a single particle.…”

Section: Particle Characterisationmentioning

confidence: 99%

“…In this paper, we co-trap pair of silica in a linear Paul trap that are coupled through their mutual Coulomb repulsion. By implementing a velocity damping scheme [30][31][32][33][34][35][36][37][38] on just one particle we sympathetically cool the motion of the second particle to achieve sub-kelvin normal mode temperatures. This differs from previous work [12] were both particles were cooled simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Sympathetic cooling and squeezing of two co-levitated nanoparticles

Penny¹,

Pontin²,

Barker

2021

Preprint

View full text Add to dashboard Cite

We demonstrate sympathetic cooling of a silica nanoparticle coupled via the Coulomb interaction to a second silica nanoparticle to which feedback cooling is directly applied. We also implement sympathetic squeezing through a similar process showing non-thermal motional states can be transferred through the Coulomb interaction. This work establishes protocols for cooling and manipulating arrays of nanoparticles for sensing and minimising the effect of optical heating in future experiments.

show abstract

Optical and electrical feedback cooling of a silica nanoparticle levitated in a Paul trap

Cited by 51 publications

References 54 publications

Performance and limits of feedback cooling methods for levitated oscillators: A direct comparison

Performance and limits of feedback cooling methods for levitated oscillators: A direct comparison

Spin-Mechanics with Nitrogen-Vacancy Centers and Trapped Particles

Sympathetic cooling and squeezing of two co-levitated nanoparticles

Contact Info

Product

Resources

About