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arXiv · quant-ph/0503153

Quantum process tomography of a single solid state qubit

M. Howard·J. Twamley·C. Wittmann·T. Gaebel·F. Jelezko·J. Wrachtrup
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Abstract

We present an example of quantum process tomography performed on a single solid state qubit. The qubit used is two energy levels of the triplet state in the Nitrogen-Vacancy defect in Diamond. Quantum process tomography is applied to a qubit which has been allowed to decohere for three different time periods. In each case the process is found in terms of the $χ$ matrix representation and the affine map representation. The discrepancy between experimentally estimated process and the closest physically valid process is noted.

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M. Howard, J. Twamley, C. Wittmann, T. Gaebel, F. Jelezko, J. Wrachtrup. 2005-03-16. Quantum process tomography of a single solid state qubit. https://arxiv.org/abs/quant-ph/0503153

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