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Title: Ball-grid array architecture for microfabricated ion traps

Abstract

State-of-the-art microfabricated ion traps for quantum information research are approaching nearly one hundred control electrodes. We report here on the development and testing of a new architecture for microfabricated ion traps, built around ball-grid array (BGA) connections, that is suitable for increasingly complex trap designs. In the BGA trap, through-substrate vias bring electrical signals from the back side of the trap die to the surface trap structure on the top side. Gold-ball bump bonds connect the back side of the trap die to an interposer for signal routing from the carrier. Trench capacitors fabricated into the trap die replace area-intensive surface or edge capacitors. Wirebonds in the BGA architecture are moved to the interposer. These last two features allow the trap die to be reduced to only the area required to produce trapping fields. The smaller trap dimensions allow tight focusing of an addressing laser beam for fast single-qubit rotations. Performance of the BGA trap as characterized with {sup 40}Ca{sup +} ions is comparable to previous surface-electrode traps in terms of ion heating rate, mode frequency stability, and storage lifetime. We demonstrate two-qubit entanglement operations with {sup 171}Yb{sup +} ions in a second BGA trap.

Authors:
; ; ; ; ; ;  [1]; ; ; ; ; ; ;  [2]
  1. Georgia Tech Research Institute, Atlanta, Georgia 30332 (United States)
  2. Honeywell International, Golden Valley, Minnesota 55422 (United States)
Publication Date:
OSTI Identifier:
22403002
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CALCIUM 40; CALCIUM IONS; CAPACITORS; COMPARATIVE EVALUATIONS; GOLD; HEATING RATE; LASER RADIATION; QUANTUM ENTANGLEMENT; QUBITS; ROTATION; SURFACES; TRAPS; YTTERBIUM 171; YTTERBIUM IONS

Citation Formats

Guise, Nicholas D., E-mail: nicholas.guise@gtri.gatech.edu, Fallek, Spencer D., Stevens, Kelly E., Brown, K. R., Volin, Curtis, Harter, Alexa W., Amini, Jason M., Higashi, Robert E., Lu, Son Thai, Chanhvongsak, Helen M., Nguyen, Thi A., Marcus, Matthew S., Ohnstein, Thomas R., and Youngner, Daniel W. Ball-grid array architecture for microfabricated ion traps. United States: N. p., 2015. Web. doi:10.1063/1.4917385.
Guise, Nicholas D., E-mail: nicholas.guise@gtri.gatech.edu, Fallek, Spencer D., Stevens, Kelly E., Brown, K. R., Volin, Curtis, Harter, Alexa W., Amini, Jason M., Higashi, Robert E., Lu, Son Thai, Chanhvongsak, Helen M., Nguyen, Thi A., Marcus, Matthew S., Ohnstein, Thomas R., & Youngner, Daniel W. Ball-grid array architecture for microfabricated ion traps. United States. doi:10.1063/1.4917385.
Guise, Nicholas D., E-mail: nicholas.guise@gtri.gatech.edu, Fallek, Spencer D., Stevens, Kelly E., Brown, K. R., Volin, Curtis, Harter, Alexa W., Amini, Jason M., Higashi, Robert E., Lu, Son Thai, Chanhvongsak, Helen M., Nguyen, Thi A., Marcus, Matthew S., Ohnstein, Thomas R., and Youngner, Daniel W. Thu . "Ball-grid array architecture for microfabricated ion traps". United States. doi:10.1063/1.4917385.
@article{osti_22403002,
title = {Ball-grid array architecture for microfabricated ion traps},
author = {Guise, Nicholas D., E-mail: nicholas.guise@gtri.gatech.edu and Fallek, Spencer D. and Stevens, Kelly E. and Brown, K. R. and Volin, Curtis and Harter, Alexa W. and Amini, Jason M. and Higashi, Robert E. and Lu, Son Thai and Chanhvongsak, Helen M. and Nguyen, Thi A. and Marcus, Matthew S. and Ohnstein, Thomas R. and Youngner, Daniel W.},
abstractNote = {State-of-the-art microfabricated ion traps for quantum information research are approaching nearly one hundred control electrodes. We report here on the development and testing of a new architecture for microfabricated ion traps, built around ball-grid array (BGA) connections, that is suitable for increasingly complex trap designs. In the BGA trap, through-substrate vias bring electrical signals from the back side of the trap die to the surface trap structure on the top side. Gold-ball bump bonds connect the back side of the trap die to an interposer for signal routing from the carrier. Trench capacitors fabricated into the trap die replace area-intensive surface or edge capacitors. Wirebonds in the BGA architecture are moved to the interposer. These last two features allow the trap die to be reduced to only the area required to produce trapping fields. The smaller trap dimensions allow tight focusing of an addressing laser beam for fast single-qubit rotations. Performance of the BGA trap as characterized with {sup 40}Ca{sup +} ions is comparable to previous surface-electrode traps in terms of ion heating rate, mode frequency stability, and storage lifetime. We demonstrate two-qubit entanglement operations with {sup 171}Yb{sup +} ions in a second BGA trap.},
doi = {10.1063/1.4917385},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}