Phys. Rev. A 67, 012317 (2003) [3 pages]Robust Ising gates for practical quantum computationReceived 9 September 2002; published 28 January 2003 I describe the use of techniques based on composite rotations to combat systematic errors in controlled phase gates, which form the basis of two-qubit quantum logic gates. Although developed and described within the context of nuclear magnetic resonanace quantum computing these sequences should be applicable to any implementation of quantum computation based on Ising couplings. In combination with existing single-qubit gates this provides a universal set of robust quantum logic gates. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.67.012317
DOI:
10.1103/PhysRevA.67.012317
PACS:
03.67.Lx, 05.50.+q, 82.56.Jn
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