Modeling ion trap thermal noise decoherence

2007 ◽  
Vol 7 (1&2) ◽  
pp. 52-72
Author(s):  
D. Leibrandt ◽  
B. Yurke ◽  
R. Slusher
Keyword(s):  
Thermal Noise ◽  
Ion Trap ◽  
Thermal Fluctuation ◽  
Ion Traps ◽  
Heating Rates ◽  
Trap Electrode ◽  
Ion Heating ◽  
Vlsi Technology ◽  
Fluctuation Noise ◽  
Materials Used

We present a detailed analysis of ion heating caused by thermal fluctuation noise in ion traps. The results of the analysis are used to estimate thermal noise ion heating rates for a variety of trap electrode configurations and materials, including recent scalable multiplexed planar ion trap proposals based on silicon VLSI technology. We find that minimizing thermal noise ion heating places severe constraints on the design and materials used for ion traps.

scholarly journals Measurements of trapped-ion heating rates with exchangeable surfaces in close proximity

MRS Advances ◽  
2017 ◽  
Vol 2 (41) ◽  
pp. 2189-2197 ◽  
Author(s):  
D. A. Hite ◽  
K. S. McKay ◽  
S. Kotler ◽  
D. Leibfried ◽  
D. J. Wineland ◽  
...  
Keyword(s):  
Electric Field ◽  
Quantum Information Processing ◽  
Ion Trap ◽  
Driving Mechanism ◽  
Heating Rates ◽  
Ion Heating ◽  
Scanned Probe Microscopy ◽  
Close Proximity ◽  
Field Noise

ABSTRACTElectric-field noise from the surfaces of ion-trap electrodes couples to the ion’s charge causing heating of the ion’s motional modes. This heating limits the fidelity of quantum gates implemented in quantum information processing experiments. The exact mechanism that gives rise to electric-field noise from surfaces is not well-understood and remains an active area of research. In this work, we detail experiments intended to measure ion motional heating rates with exchangeable surfaces positioned in close proximity to the ion, as a sensor to electric-field noise. We have prepared samples with various surface conditions, characterized in situ with scanned probe microscopy and electron spectroscopy, ranging in degrees of cleanliness and structural order. The heating-rate data, however, show no significant differences between the disparate surfaces that were probed. These results suggest that the driving mechanism for electric-field noise from surfaces is due to more than just thermal excitations alone.

Numerical analysis of trajectories in a Cassinian ion trap of second order with trap door ion inlet

2021 ◽  
Vol 27 (1) ◽  
pp. 3-12
Author(s):  
Bjoern Raupers ◽  
Hana Medhat ◽  
Juergen Grotemeyer ◽  
Frank Gunzer
Keyword(s):  
Ion Trap ◽  
Ion Traps ◽  
Second Order ◽  
Resolving Power ◽  
Periodic Pattern ◽  
Ion Motion ◽  
Trap Door ◽  
Mass Resolving Power ◽  
Long Time ◽  
The Fourier Transform

Ion traps like the Orbitrap are well known mass analyzers with very high resolving power. This resolving power is achieved with help of ions orbiting around an inner electrode for long time, in general up to a few seconds, since the mass signal is obtained by calculating the Fourier Transform of the induced signal caused by the ion motion. A similar principle is applied in the Cassinian Ion Trap of second order, where the ions move in a periodic pattern in-between two inner electrodes. The Cassinian ion trap has the potential to offer mass resolving power comparable to the Orbitrap with advantages regarding the experimental implementation. In this paper we have investigated the details of the ion motion analyzing experimental data and the results of different numerical methods, with focus on increasing the resolving power by increasing the oscillation frequency for ions in a high field ion trap. In this context the influence of the trap door, a tunnel through which the ions are injected into the trap, on the ion velocity becomes especially important.

scholarly journals Thermal fluctuation noise in Mo/Au superconducting transition-edge sensor microcalorimeters

2019 ◽  
Vol 125 (16) ◽  
pp. 164503 ◽  
Author(s):  
N. A. Wakeham ◽  
J. S. Adams ◽  
S. R. Bandler ◽  
S. Beaumont ◽  
J. A. Chervenak ◽  
...  
Keyword(s):  
Transition Edge Sensor ◽  
Thermal Fluctuation ◽  
Superconducting Transition ◽  
Transition Edge ◽  
Fluctuation Noise

A linear and quasi-linear investigation of the crossfield current-driven ion-acoustic instability

1982 ◽  
Vol 28 (2) ◽  
pp. 267-279 ◽  
Author(s):  
R. Bharuthram ◽  
M. A. Hellberg
Keyword(s):  
Linear Growth ◽  
Velocity Distribution Function ◽  
Linear Growth Rate ◽  
Particle Diffusion ◽  
Anomalous Resistivity ◽  
Heating Rates ◽  
Ion Heating ◽  
Acoustic Instability ◽  
Ion Acoustic ◽  
Drift Instability

The linear growth rate of the crossfield current-driven ion-acoustic instability is obtained for any equilibrium particle velocity distribution function of the type . Quasi-linear theory is then used to investigate the saturation of the instability. Several associated features, namely, particle diffusion in velocity space, anomalous resistivity, energy distribution and electron and ion heating rates are evaluated for a Maxwellian distribution. Finally, a brief comparison is made with the heating rates associated with the electron cyclotron drift instability.

How far can ion trap miniaturization go? Parameter scaling and space-charge limits for very small cylindrical ion traps

2014 ◽  
Vol 49 (3) ◽  
pp. 233-240 ◽  
Author(s):  
Yuan Tian ◽  
Jessica Higgs ◽  
Ailin Li ◽  
Brandon Barney ◽  
Daniel E. Austin
Keyword(s):  
Space Charge ◽  
Ion Trap ◽  
Ion Traps ◽  
Cylindrical Ion Traps

scholarly journals Electro-Optical Ion Trap for Experiments with Atom-Ion Quantum Hybrid Systems

2020 ◽  
Vol 10 (7) ◽  
pp. 2222 ◽  
Author(s):  
Elia Perego ◽  
Lucia Duca ◽  
Carlo Sias
Keyword(s):  
Hybrid Systems ◽  
Optical Lattice ◽  
Ion Trap ◽  
Optical Trap ◽  
Paul Trap ◽  
Electric Quadrupole ◽  
Ion Traps ◽  
Ion Trapping ◽  
Ion Collisions ◽  
Ion Interactions

In the development of atomic, molecular, and optical (AMO) physics, atom-ion hybrid systems are characterized by the presence of a new tool in the experimental AMO toolbox: atom-ion interactions. One of the main limitations in state-of-the-art atom-ion experiments is represented by the micromotion component of the ions’ dynamics in a Paul trap, as the presence of micromotion in atom-ion collisions results in a heating mechanism that prevents atom-ion mixtures from undergoing a coherent evolution. Here, we report the design and the simulation of a novel ion trapping setup especially conceived of for integration with an ultracold atoms experiment. The ion confinement is realized by using an electro-optical trap based on the combination of an optical and an electrostatic field, so that no micromotion component will be present in the ions’ dynamics. The confining optical field is generated by a deep optical lattice created at the crossing of a bow-tie cavity, while a static electric quadrupole ensures the ions’ confinement in the plane orthogonal to the optical lattice. The setup is also equipped with a Paul trap for cooling the ions produced by photoionization of a hot atomic beam, and the design of the two ion traps facilitates the swapping of the ions from the Paul trap to the electro-optical trap.

PRECISE NUCLEAR PHYSICS MEASUREMENTS WITH ION TRAPS

2009 ◽  
Vol 18 (02) ◽  
pp. 392-404 ◽  
Author(s):  
FRANK HERFURTH
Keyword(s):  
Rare Species ◽  
Nuclear Physics ◽  
Ion Trap ◽  
Ion Traps ◽  
Ion Beams ◽  
Precision Measurements ◽  
Mass Measurements ◽  
Decay Spectroscopy ◽  
Storage Volume

Ion traps are well suited for precision measurements also with exotic and rare species as radioactive nuclei. They provide a well controlled storage volume, stable fields and the means to handle the ion sample. The applications are first of all precise mass measurements and the therewith connected physics questions. Furthermore, ion traps are used to manipulate slow ion beams, to purify samples for decay spectroscopy or to observe the decay itself to measure for instance the β - ν correlation. An overview of the existing ion trap facilities for radioactive nuclei is given.

scholarly journals High-resolution double resonance action spectroscopy in ion traps: vibrational and rotational fingerprints of CH2NH2+

2019 ◽  
Vol 21 (48) ◽  
pp. 26406-26412 ◽  
Author(s):  
Charles R. Markus ◽  
Sven Thorwirth ◽  
Oskar Asvany ◽  
Stephan Schlemmer
Keyword(s):  
High Resolution ◽  
Ion Trap ◽  
Double Resonance ◽  
Ion Traps ◽  
Rotational Transition ◽  
Action Spectroscopy

A novel rotation–vibration double resonance scheme was used to measure the first pure rotational transition frequencies of protonated methanimine (CH2NH2+) in a 4 K cryogenic ion trap.

How far can ion trap miniaturization go? Parameter scaling and space-charge limits for very small cylindrical ion traps

2014 ◽  
Vol 49 (3) ◽  
pp. ii-ii
Author(s):  
Y. Tian ◽  
J. Higgs ◽  
A. Li ◽  
B. Barney ◽  
D. E. Austin
Keyword(s):  
Space Charge ◽  
Ion Trap ◽  
Ion Traps ◽  
Cylindrical Ion Traps

Electron capture branching ratios for the odd–odd intermediate nuclei in double-beta decay using the TITAN ion trap facility

2007 ◽  
Vol 85 (1) ◽  
pp. 57-75 ◽  
Author(s):  
D Frekers ◽  
J Dilling ◽  
I Tanihata
Keyword(s):  
Electron Capture ◽  
Nuclear Matrix ◽  
Ion Trap ◽  
Ion Traps ◽  
Branching Ratios ◽  
Double Beta Decay ◽  
Radioactive Beam ◽  
X Rays ◽  
Matrix Elements ◽  
Exchange Reactions

We suggest a measurement of the electron capture (EC) branching ratios for the odd–odd intermediate nuclei in double-beta (β– β–) decay using the new ion trap facility TITAN at the TRIUMF radioactive beam facility. The EC branching ratios are important for evaluating the nuclear matrix elements involved in the β– β– -decay for both, the 2ν and the 0ν-decay mode. Especially the neutrinoless (0νββ) mode is presently at the center of attention, as it probes the Majorana character of the neutrino, and if observed unambiguously, knowledge of the nuclear matrix elements are the key for determining the neutrino mass. The EC branches are in most cases suppressed by several orders of magnitude relative to their β– -counterparts owing to much lower decay energies, and are, therefore, either poorly known or not known at all. Here, the traditional methods of producing the radioactive isotope through irradiation of a suitable target and then measuring the K-shell X-rays have reached a limit of sensitivity. In this note, we will describe a novel technique to measure the EC branching ratios, where the TITAN ion traps and the ISAC radioactive beam facility at TRIUMF are the central components. This approach will increase the sensitivity limit because of significantly reduced background levels. Seven cases will be discussed in detail and connections to hadronic charge-exchange reactions will be made. For most of these, the daughter isotopes are β– β– -decay nuclei that are presently under intense experimental investigations. These are [Formula: see text]PACS Nos.: 23.40.–s, 23.40.Hc, 29.30.Kv, 29.25.Rm, 14.60.Pq

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