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Dynamical Generation of Noiseless Quantum Subsystems

Lorenza Viola·Emanuel Knill·Seth Lloyd
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Abstract

We present control schemes for open quantum systems that combine decoupling and universal control methods 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 an efficient scheme for performing universal encoded quantum computation in a wide class of systems subjected to linear non-Markovian quantum noise and supporting Heisenberg-type internal Hamiltonians.

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Lorenza Viola, Emanuel Knill, Seth Lloyd. 2000-02-25. Dynamical Generation of Noiseless Quantum Subsystems. https://doi.org/10.1103/physrevlett.85.3520

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