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YZ
Yan Zhao
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Decoherence Correction by the Zeno Effect and Non-Holonomic Control
Celso Villas-Boas
et al.
Oct 31, 2002
We show that multidimensional Zeno effect combined with non-holonomic controlallows to efficiently protect quantum systems from decoherence by a methodsimilar to classical coding. Contrary to the conventional approach, our methodis applicable to arbitrary error-inducing Hamiltonians and general quantumsystems. We also propose algorithms of finding encoding that approaches theHamming upper bound along with methods of practical realizations of theencodings. Two new codes protecting 2 information qubits out of 7 and 4information qubits out of 9 against a single error with arbitrarily smallprobability of failure are constructed as an example.
Quantum Mechanics
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