Geometric Phase of Double Quantum Dot Qubits System with Coulomb Interaction |
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Authors: | Bao Liu Feng-Yang Zhang Zi-Hong Chen He-Shan Song |
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Institution: | 1. School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian, 116024, China
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Abstract: | In quantum computing the geometric phase is a valuable tool to achieve fault tolerant. And quantum dot system is a candidate for constructing quantum processor. In this paper we investigate the geometric phase of a double qubits system interaction with a quantum point contact device. The qubits were constructed by two coupled double quantum dots systems. The coulomb interaction between the two subsystem have been considered. By using the definition which introduced by Tong, we calculate the geometric phases of each double quantum dots subsystem. |
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