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23 February 2005 Measuring decoherence properties of charge qubits using buried donor cellular automata
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Abstract
Quantum-dot Cellular Automata (QDCA) provide an interesting experimental system with which to study the interaction of a charge-based two-level system with the surrounding solid-state environment. This is particularly important given the recent interest in solid-state quantum computers using charge-qubits. We show that many of the properties of these qubits, coupling strength, tunnelling time, relaxation rate and dephasing time can be estimated using a QDCA cell like structure. Calculations are performed for the case of buried donors in silicon but the results are equally applicable to other forms of charge-qubit.
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Jared H. Cole, Andrew D. Greentree, Cameron J. Wellard, Lloyd C. L. Hollenberg, and Steven Prawer "Measuring decoherence properties of charge qubits using buried donor cellular automata", Proc. SPIE 5650, Micro- and Nanotechnology: Materials, Processes, Packaging, and Systems II, (23 February 2005); https://doi.org/10.1117/12.583194
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