四川大学学报（自然科学版）2011，Vol.48Issue(3)：647-650,4.DOI:10.3969/j.issn.0490-6756.2011.03.030
利用无消相干子空间实现原子间的二位逻辑门
Two-qubit logic gate between two atoms during the decoherence-free subspace
摘要
Abstract
We propose a scheme to implement two-qubit logic gates between two four-level atoms in a large-detuned optical cavity.The system state is evolved inside the decoherence-free subspace through the stimulated Raman processes.Only if the cavity-atom interaction time is controlled appropriately,which yields the desired unitary evolution operation for controlled-not gate and quantum phase gate.Our scheme is immune to decoherence due to dissipation of cavity excitation and spontaneous emission from the excited atomic level.It is more applicable based on current laboratory technology.关键词
腔量子电动力学/无消相干子空间/二位逻辑门Key words
cavity QED/decoherence-free subspace/two-qubit logic gate分类
数理科学引用本文复制引用
樊洋,蒋治国..利用无消相干子空间实现原子间的二位逻辑门[J].四川大学学报（自然科学版）,2011,48(3):647-650,4.基金项目
海军工程大学基金(20080603000001) （20080603000001）
