Chapter 4. Ion Trap Quantum Computer with Bichromatic Light

  1. Prof. Dr. Samuel L. Braunstein2,
  2. Dr. Hoi-Kwong Lo3 and
  3. Pieter Kok Assistant Editor2
  1. Anders Sørensen and
  2. Klaus Mølmer

Published Online: 28 JAN 2005

DOI: 10.1002/3527603182.ch4

Scalable Quantum Computers: Paving the Way to Realization

Scalable Quantum Computers: Paving the Way to Realization

How to Cite

Sørensen, A. and Mølmer, K. (2000) Ion Trap Quantum Computer with Bichromatic Light, in Scalable Quantum Computers: Paving the Way to Realization (eds S. L. Braunstein, H.-K. Lo and P. Kok), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527603182.ch4

Editor Information

  1. 2

    University of Wales, Bangor, UK

  2. 3

    MagiQ Technologies, Inc., New York, USA

Author Information

  1. Institute of Physics and Astronomy, University of Aarhus, DK-8000 Århus C, Denmark

Publication History

  1. Published Online: 28 JAN 2005
  2. Published Print: 20 DEC 2000

ISBN Information

Print ISBN: 9783527403219

Online ISBN: 9783527603183

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Keywords:

  • ion trap quantum computer;
  • bichromatic light;
  • quantum computing

Summary

In the ion trap quantum computer, quantum bits are represented by the internal state of the trapped ions, and the collective vibrations of the ions are exploited for the coherent manipulation of the state of several bits. We have developed a method to perform gates on different ions by illuminating the ions with bichromatic light. Our gates are independent of the motional state of the ions and they may be applied to ions in any state or, e.g., thermal mixture of vibrational states. Moreover, our proposal allows the production of multiparticle entangled states even in situations without experimental access to the individual ions in the trap. Maximally entangled states of any number of ions are produced by simply illuminating all ions with the same beams of bichromatic light.