System design for large-scale ion trap quantum information processor

2005 ◽  
Vol 5 (7) ◽  
pp. 515-537
Author(s):  
J. Kim ◽  
S. Pau ◽  
Z. Ma ◽  
H.R. McLellan ◽  
J.V. Gates ◽  
...  
Keyword(s):  
Quantum Information ◽  
System Design ◽  
Large Scale ◽  
Ion Trap ◽  
System Engineering ◽  
Multiple Data ◽  
Design Tradeoffs ◽  
Available Technology

We present a detailed system design and available technology choices for building a large scale ($>$ 100 qubits) ion trap quantum information processor (QIP). The system design is based on technologies that are within reach today, and utilizes single-instruction-on-multiple-data (SIMD) principles to re-use resources that cannot be duplicated easily. The system engineering principles adopted highlight various design tradeoffs in the QIP design and serve as a guideline to find design spaces for a much larger QIP.

Integrated Optics Technology for Ion Trap Based Large-scale Quantum Information Processor

2006 ◽  
Author(s):  
Jungsang Kim ◽  
Changsoon Kim ◽  
Caleb W. Knoernschild ◽  
Bin Liu ◽  
Kyle S. McKay
Keyword(s):  
Quantum Information ◽  
Integrated Optics ◽  
Large Scale ◽  
Ion Trap

Surface-electrode architecture for ion-trap quantum information processing

2005 ◽  
Vol 5 (6) ◽  
pp. 419-439
Author(s):  
J. Chiaverini ◽  
R.B. Blakestad ◽  
J. Britton ◽  
J.D. Jost ◽  
C. Langer ◽  
...  
Keyword(s):  
Quantum Information ◽  
Large Scale ◽  
Quantum Information Processing ◽  
Ion Trap ◽  
Ion Traps ◽  
Trapped Ions ◽  
Electrode Geometry ◽  
Surface Electrode ◽  
Single Plane ◽  
Lateral Extent

We investigate a surface-mounted electrode geometry for miniature linear radio frequency Paul ion traps. The electrodes reside in a single plane on a substrate, and the pseudopotential minimum of the trap is located above the substrate at a distance on the order of the electrodes' lateral extent or separation. This architecture provides the possibility to apply standard microfabrication principles to the construction of multiplexed ion traps, which may be of particular importance in light of recent proposals for large-scale quantum computation based on individual trapped ions.

scholarly journals Selecting Optimal Combination of Data Channels for Semantic Segmentation in City Information Modelling (CIM)

2021 ◽  
Vol 13 (7) ◽  
pp. 1367
Author(s):  
Yuanzhi Cai ◽  
Hong Huang ◽  
Kaiyang Wang ◽  
Cheng Zhang ◽  
Lei Fan ◽  
...  
Keyword(s):  
Large Scale ◽  
Semantic Segmentation ◽  
Optimal Combination ◽  
Reconstruction Technique ◽  
Process Data ◽  
Redundant Data ◽  
Multiple Data ◽  
Information Models ◽  
Efficient Data

Over the last decade, a 3D reconstruction technique has been developed to present the latest as-is information for various objects and build the city information models. Meanwhile, deep learning based approaches are employed to add semantic information to the models. Studies have proved that the accuracy of the model could be improved by combining multiple data channels (e.g., XYZ, Intensity, D, and RGB). Nevertheless, the redundant data channels in large-scale datasets may cause high computation cost and time during data processing. Few researchers have addressed the question of which combination of channels is optimal in terms of overall accuracy (OA) and mean intersection over union (mIoU). Therefore, a framework is proposed to explore an efficient data fusion approach for semantic segmentation by selecting an optimal combination of data channels. In the framework, a total of 13 channel combinations are investigated to pre-process data and the encoder-to-decoder structure is utilized for network permutations. A case study is carried out to investigate the efficiency of the proposed approach by adopting a city-level benchmark dataset and applying nine networks. It is found that the combination of IRGB channels provide the best OA performance, while IRGBD channels provide the best mIoU performance.

Soft-X-ray spectra of highly charged Au ions in an electron-beam ion trap

2001 ◽  
Vol 79 (2-3) ◽  
pp. 153-162 ◽  
Author(s):  
E Träbert ◽  
P Beiersdorfer ◽  
K B Fournier ◽  
S B Utter ◽  
K L Wong
Keyword(s):  
Electron Beam ◽  
Beam Energy ◽  
Large Scale ◽  
Ion Trap ◽  
Electron Beam Energy ◽  
X Ray ◽  
Maximum Charge ◽  
Electron Beam Ion Trap ◽  
Atomic Structure Calculations ◽  
Structure Calculations

Systematic variation of the electron-beam energy in an electron-beam ion trap has been employed to produce soft-X-ray spectra (20 to 60 Å) of Au with well-defined maximum charge states ranging from Br- to Co-like ions. Guided by large-scale relativistic atomic structure calculations, the strongest Δn = 0 (n = 4 to n' = 4) transitions in Rb- to Cu-like ions (Au42+ – Au50+) have been identified. PACS Nos.: 32.30Rj, 39.30+w, 31.50+w, 32.20R

Supporting Negotiations in the Early Stage of Large-Scale Mechanical System Design

2005 ◽  
Vol 127 (6) ◽  
pp. 1056 ◽  
Author(s):  
Ping Ge ◽  
Stephen C.-Y. Lu ◽  
Satish T.S. Bukkapatnam
Keyword(s):  
System Design ◽  
Mechanical System ◽  
Large Scale ◽  
Early Stage

Evaluation of Fuel Preparation Systems for Lean Premixing-Prevaporizing Combustors

1986 ◽  
Vol 108 (2) ◽  
pp. 391-395
Author(s):  
W. J. Dodds ◽  
E. E. Ekstedt
Keyword(s):  
System Design ◽  
Large Scale ◽  
Fuel Injection ◽  
Operating Conditions ◽  
Turbine Engine ◽  
Fuel Injectors ◽  
Design Concepts ◽  
Mixture Preparation ◽  
Design Variables ◽  
System Length

A series of tests was conducted to provide data for the design of premixing-prevaporizing fuel-air mixture preparation systems for aircraft gas turbine engine combustors. Fifteen configurations of four different fuel-air mixture preparation system design concepts were evaluated to determine fuel-air mixture uniformity at the system exit over a range of conditions representative of cruise operation for a modern commercial turbofan engine. Operating conditions, including pressure, temperature, fuel-air ratio, and velocity had no clear effect on mixture uniformity in systems which used low-pressure fuel injectors. However, performance of systems using pressure atomizing fuel nozzles and large-scale mixing devices was shown to be sensitive to operating conditions. Variations in system design variables were also evaluated and correlated. Mixture uniformity improved with increased system length, pressure drop, and number of fuel injection points per unit area. A premixing system compatible with the combustor envelope of a typical combustion system and capable of providing mixture nonuniformity (standard deviation/mean) below 15% over a typical range of cruise operating conditions was demonstrated.

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