Single Electron Transport and Entanglement Induced by Surface Acoustic Waves versus Free Ballistic Propagation in Coupled Quantum Wires |
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Authors: | Marcello Rosini Andrea Bertoni Paolo Bordone Carlo Jacoboni |
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Affiliation: | (1) Dipartimento di Ingegneria dell’Innovazione, via Arnesano (edificio Stecca), I-73100 Lecce, Italy;(2) INFM-S3 Research Centre, via Campi213/A, I-41100 Modena, Italy;(3) Dipartimento di Fisica, Università di Modena e Reggio Emilia, via Campi213/A, I-41100 Modena, Italy |
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Abstract: | In this work we study the coherent propagation of electrons in quantum wires driven by surface acoustic waves, as a part of a feasibility study on a coupled quantum wires device, able to realize the basic operations needed for quantum computing. We demonstrate that the introduction of the surface acoustic wave is able to improve the devices performance. In particular, single- and double-qubit quantum gates have been simulated and better results are obtained, with respect to the free electron propagation. A further analysis reveals a strong reduction of the final undesired spatial entanglement and confirms the effectiveness of the dynamics driven by surface acoustic wave. |
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Keywords: | surface acoustic waves quantum wires quantum computing entanglement |
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