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

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.

19 pages, 3 figures

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Cited by in corpus (4)

• Impurity Effects in Two-Electron Coupled Quantum Dots: Entanglement Modulation
• Solving non-Markovian open quantum systems with multi-channel reservoir coupling
• Emergence of metastable pointer states basis in non-Markovian quantum dynamics
• Phonon-induced entanglement dynamics of two donor-based charge quantum bits