A double ion trap for large Coulomb crystals

Champenois, Caroline; Pedregosa-Gutierrez, Jofre; Marciante, Mathieu; Guyomarc'h, Didier; Houssin, Marie; Knoop, Martina

doi:10.1063/1.4796077

Cited by 9 publications

(15 citation statements)

References 27 publications

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“…Numerical simulations performed validate experimental data and observations [40]. Recent investigations are focused on producing planar Coulomb crystals using specially designed linear multipole traps [37,41,42]. Calculations performed for timedependent dynamics in RF ion traps were also generalized to multispecies ion crystals in multipole traps [43].…”

Section: Quasiclassical Dynamics In Nonlinear Combined and Paul Trapsmentioning

confidence: 62%

Squeezed coherent states of motion for ions confined in quadrupole and octupole ion traps

Mihalcea

2018

Annals of Physics

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Quasiclassical dynamics of trapped ions is characterized by applying the time dependent variational principle (TDVP) on coherent state orbits, in case of quadrupole and octupole combined (Paul and Penning) and radiofrequency (RF) traps. A dequantization algorithm is proposed, by which the classical Hamilton (energy) function associated to the system results as the expectation value of the quantum Hamiltonian on squeezed coherent states. We develop such method and particularize the quantum Hamiltonian for a combined and for a RF trap, with axial symmetry and a RF anharmonic electric potential. We also build the classical Hamiltonian functions for the particular traps we considered, and find the classical equations of motion.

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Section: Quasiclassical Dynamics In Nonlinear Combined and Paul Trapsmentioning

confidence: 62%

Squeezed coherent states of motion for ions confined in quadrupole and octupole ion traps

Mihalcea

2018

Annals of Physics

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“…An octupole (k = 4) trap (25 ) has been designed to study the equilibrium and dynamical properties of large samples of laser cooled Ca + ions (m = 40 a.m.u.). Its inner radius r 0 is 3.83 mm and its internal axial length 2z 0 is 96 mm.…”

Section: Observation Of Laser-cooled Ions In An Octupole Trapmentioning

confidence: 99%

Symmetry breaking in linear multipole traps

Pedregosa-Gutierrez

Champenois

Kamsap

et al. 2017

Journal of Modern Optics

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RésuméRadiofrequency multipole traps have been used for some decades in cold collision experiments, and are gaining interest for precision spectroscopy due to their low micromotion contribution, and the predicted unusual cold-ion structures. However, the experimental realisation is not yet fully controlled, and open questions in the operation of these devices remain. We present experimental observations of symmetry breaking of the trapping potential in a macroscopic octupole trap with laser-cooled ions. Numerical simulations have been performed in order to explain the appearance of additional local potential minima, and be able to control them in a next step. We characterize these additional potential minima, in particular with respect to their position, their potential depth and their probability of population as a function of the radial and angular displacement of the trapping rods.

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“…This implies that ω 0 /2π = 124 kHz and the effective radial harmonic potential is given by ω r = 267 kHz. Such values correspond to our experimental set-up as described in [11]. Before shuttling, the initial conditions of each ion are prepared in three steps : first, the ions are set at random positions following a Gaussian distribution, and with zero velocity.…”

Section: B Ion Cloud Transportmentioning

confidence: 99%

“…In our experiment, we aim to transport an ion cloud over a distance of 23 mm along an RF quadrupole trap split in two trapping zones by a 2 mm wide extra DC-electrode, setting to 3 the number of available electrodes for transport (see [11] for details on the experimental set-up). Regarding dimensions and external control parameters this is more comparable to the macroscopic setups used in mass spectrometry [2], but without the damping role of buffer gas and with the objective of 100 % shuttling efficiency.…”

Section: Experimental Implementationmentioning

confidence: 99%

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Ion transport in macroscopic RF linear traps

Pedregosa-Gutierrez

Champenois

Kamsap

et al. 2015

International Journal of Mass Spectrometry

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Efficient transport of cold atoms or ions is a subject of increasing concern in many experimental applications reaching from quantum information processing to frequency metrology. For the scalable quantum computer architectures based on the shuttling of individual ions, different transport schemes have been developed, which allow to move single atoms minimizing their energy gain. In this article we discuss the experimental implementation of the transport of a three-dimensional ion cloud in a macroscopic linear radiofrequency (RF) trap. The present work is based on numerical simulations done by molecular dynamics taking into account a realistic experimental environment.The deformation of the trapping potential and the spatial extension of the cloud during transport appears to be the major source of the ion energy gain. The efficiency of transport in terms of transfer probability and ion number is also discussed.

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A double ion trap for large Coulomb crystals

Cited by 9 publications

References 27 publications

Squeezed coherent states of motion for ions confined in quadrupole and octupole ion traps

Squeezed coherent states of motion for ions confined in quadrupole and octupole ion traps

Symmetry breaking in linear multipole traps

Ion transport in macroscopic RF linear traps

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