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arXiv · 1006.0515

Analytical model of non-Markovian decoherence in donor-based charge quantum bits

F Lastra·S Reyes·S Wallentowitz
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Abstract

We develop an analytical model for describing the dynamics of a donor-based charge quantum bit (qubit). As a result, the quantum decoherence of the qubit is analytically obtained and shown to reveal non-Markovian features: The decoherence rate varies with time and even attains negative values, generating a non-exponential decay of the electronic coherence and a later recoherence. The resulting coherence time is inversely proportional to the temperature, thus leading to low decoherence below a material dependent characteristic temperature.

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F Lastra, S Reyes, S Wallentowitz. 2010-06-02. Analytical model of non-Markovian decoherence in donor-based charge quantum bits. https://doi.org/10.1088/0953-4075/44/1/015504

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