Phys. Rev. Lett. 85, 3520–3523 (2000)Dynamical Generation of Noiseless Quantum SubsystemsReceived 25 February 2000; published in the issue dated 16 October 2000 We combine dynamical decoupling and universal control methods for open quantum systems with coding procedures. By exploiting a general algebraic approach, we show how appropriate encodings of quantum states result in obtaining universal control over dynamically generated noise-protected subsystems with limited control resources. In particular, we provide a constructive scheme based on two-body Hamiltonians for performing universal quantum computation over large noiseless spaces which can be engineered in the presence of arbitrary linear quantum noise. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.3520
DOI:
10.1103/PhysRevLett.85.3520
PACS:
03.67.Lx, 05.30.-d, 89.70.+c, 05.40.Ca
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