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arXiv · 0708.3304

Protected Rabi oscillation induced by natural interactions among physical qubits

Naoaki Kokubun·Akira Shimizu
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Abstract

For a system composed of nine qubits, we show that natural interactions among the qubits induce the time evolution that can be regarded, at discrete times, as the Rabi oscillation of a logical qubit. Neither fine tuning of the parameters nor switching of the interactions is necessary. Although straightforward application of quantum error correction fails, we propose a protocol by which the logical Rabi oscillation is protected against all single-qubit errors. The present method thus opens a simple and realistic way of protecting the unitary time evolution against noise.

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Naoaki Kokubun, Akira Shimizu. 2008-06-03. Protected Rabi oscillation induced by natural interactions among physical qubits. https://doi.org/10.1103/physreva.78.012302

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