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- W2083028671 abstract "Semiconductor quantum dots coherently driven by pulsed laser are fundamental physical systems which allow studying the dynamical properties of confined quantum states. These systems are attractive candidates for a solid-state qubit, which open the possibility for several investigations in quantum-information processing. In this work we study the effects of a specific decoherence process, the spontaneous emission of excitonic states, in a quantum dot molecule. We model our system considering a three-level Hamiltonian and solve the corresponding master equation in the Lindblad form. Our results show that the spontaneous emission associated with the direct exciton helps to build up a robust indirect exciton state. This robustness against decoherence allows potential applications in quantum memories and quantum gate architectures. We further investigate several regimes of physical parameters, showing that this process is easily controlled by tuning of external fields." @default.
- W2083028671 created "2016-06-24" @default.
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- W2083028671 date "2010-02-25" @default.
- W2083028671 modified "2023-10-02" @default.
- W2083028671 title "Robust states in semiconductor quantum dot molecules" @default.
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- W2083028671 doi "https://doi.org/10.1103/physrevb.81.075322" @default.
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