H+2-Like Impurities Confined by Spherical Quantum Dots: a Candidate for Charge Qubits

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2008,（9）
• 页码范围: 767-770
• 页数: 4页
• 语种: 英文

摘要

We have calculated the electron energy of the ground and lower excited states for H+2-1ike impurity states confined in finite spherical quantum dots in GaAs.Based on the characteristics of energy levels,we have proposed a scheme for realizing charge qubit composed by the the ground and the first excited states of this confined double donor system for the first time.In the proposed scheme the charge qubit is coded in terms of the located electronic states.