dorsal/arxiv
View SchemaStabilization of Quantum Information: A Unified Dynamical-Algebraic Approach
| Authors | P. Zanardi |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0203008 |
| URL | https://arxiv.org/abs/quant-ph/0203008 |
| Journal | Macroscopic Quantum Coherence and Quantum Computing, A. V. Averin, B. Ruggiero and P. Silvestrini (Eds), Kluwer Academic/Plenum Publisher, New York (2001) |
Abstract
The notion of symmetry is shown to be at the heart of all error correction/avoidance strategies for preserving quantum coherence of an open quantum system S e.g., a quantum computer. The existence of a non-trivial group of symmetries of the dynamical algebra of S provides state-space sectors immune to decoherence. Such noiseless sectors, that can be viewed as a noncommutative version of the pointer basis, are shown to support universal quantum computation and to be robust against perturbations. When the required symmetry is not present one can generate it artificially resorting to active symmetrization procedures.
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"abstract": "The notion of symmetry is shown to be at the heart of all error\ncorrection/avoidance strategies for preserving quantum coherence of an open\nquantum system S e.g., a quantum computer. The existence of a non-trivial group\nof symmetries of the dynamical algebra of S provides state-space sectors immune\nto decoherence. Such noiseless sectors, that can be viewed as a noncommutative\nversion of the pointer basis, are shown to support universal quantum\ncomputation and to be robust against perturbations. When the required symmetry\nis not present one can generate it artificially resorting to active\nsymmetrization procedures.",
"arxiv_id": "quant-ph/0203008",
"authors": [
"P. Zanardi"
],
"categories": [
"quant-ph"
],
"journal_ref": "Macroscopic Quantum Coherence and Quantum Computing, A. V. Averin,\n B. Ruggiero and P. Silvestrini (Eds), Kluwer Academic/Plenum Publisher, New\n York (2001)",
"title": "Stabilization of Quantum Information: A Unified Dynamical-Algebraic Approach",
"url": "https://arxiv.org/abs/quant-ph/0203008"
},
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