Controlled phase gate for solid-state charge-qubit architectures

作     者：S. G. Schirmer D. K. L. Oi Andrew D. Greentree 

作者机构：Department of Applied Mathematics and Theoretical Physics University of Cambridge Wilberforce Road Cambridge CB3 0WA United Kingdom Department of Engineering University of Cambridge Trumpington Street Cambridge CB2 1PZ United Kingdom Centre for Quantum Computer Technology School of Physics University of Melbourne Melbourne Victoria 3010 Australia 

出 版 物：《Physical Review A》 (物理学评论A辑：原子、分子和光学物理学)

年 卷 期：2005年第71卷第1期

页      面：012325-012325页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：QUANTUM COMPUTATION COMPUTER SILICON DOTS 

摘      要：We describe a mechanism for realizing a controlled phase gate for solid-state charge qubits. By augmenting the positionally defined qubit with an auxiliary state, and changing the charge distribution in the three-dot system, we are able to effectively switch the Coulombic interaction, effecting an entangling gate. We consider two architectures, and numerically investigate their robustness to gate noise.