Material science for quantum computing with atom chips

Material science for quantum computing with atom chips In its most general form, the atom chip is a device in which neutral or charged particles are positioned in an isolating environment such as vacuum (or even a carbon solid state lattice) near the chip surface. The chip may then be used to interact in a highly controlled manner with the quantum state. I outline the importance of material science to quantum computing (QC) with atom chips, where the latter may be utilized for many, if not all, suggested implementations of QC. Material science is important both for enhancing the control coupling to the quantum system for preparation and manipulation as well as measurement, and for suppressing the uncontrolled coupling giving rise to low fidelity through static and dynamic effects such as potential corrugations and noise. As a case study, atom chips for neutral ground state atoms are analyzed and it is shown that nanofabricated wires will allow for more than 104 gate operations when considering spin-flips and decoherence. The effects of fabrication imperfections and the Casimir–Polder force are also analyzed. In addition, alternative approaches to current-carrying wires are briefly described. Finally, an outlook of what materials and geometries may be required is presented, as well as an outline of directions for further study. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Material science for quantum computing with atom chips

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Publisher
Springer Journals
Copyright
Copyright © 2011 by Springer Science+Business Media, LLC
Subject
Physics; Quantum Physics; Computer Science, general; Mathematics, general; Theoretical, Mathematical and Computational Physics; Physics, general
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-011-0311-5
Publisher site
See Article on Publisher Site

Abstract

In its most general form, the atom chip is a device in which neutral or charged particles are positioned in an isolating environment such as vacuum (or even a carbon solid state lattice) near the chip surface. The chip may then be used to interact in a highly controlled manner with the quantum state. I outline the importance of material science to quantum computing (QC) with atom chips, where the latter may be utilized for many, if not all, suggested implementations of QC. Material science is important both for enhancing the control coupling to the quantum system for preparation and manipulation as well as measurement, and for suppressing the uncontrolled coupling giving rise to low fidelity through static and dynamic effects such as potential corrugations and noise. As a case study, atom chips for neutral ground state atoms are analyzed and it is shown that nanofabricated wires will allow for more than 104 gate operations when considering spin-flips and decoherence. The effects of fabrication imperfections and the Casimir–Polder force are also analyzed. In addition, alternative approaches to current-carrying wires are briefly described. Finally, an outlook of what materials and geometries may be required is presented, as well as an outline of directions for further study.

Journal

Quantum Information ProcessingSpringer Journals

Published: Oct 1, 2011

References

  • Electric field noise above surfaces: a model for heating-rate scaling law in ion traps
    Dubessy, R.; Coudreau, T.; Guidoni, L.
  • Superconducting microfabricated ion traps
    Wang, S.X.; Ge, Y.; Labaziewicz, J.; Dauler, E.; Berggren, K.; Chuang Isaac, L.
  • Measurement of the Casimir–Polder force
    Sukenik, C.I.; Boshier, M.G.; Cho, D.; Sandoghdar, V.; Hinds, E.A.
  • Atom chips: fabrication and thermal properties
    Groth, S.; Krueger, P.; Wildermuth, S.; Folman, R.; Fernholz, T.; Mahalu, D.; Bar-Joseph, I.; Schmiedmayer, J.
  • Magnetic noise around metallic microstructures
    Zhang, B.; Henkel, C.

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