Selective Atom-Cavity Interaction Scheme for Quantum Controlled-NOT Gate Using Four-Level Atoms in Cavity QED System

• 来源期刊: 理论物理通讯(英文版)
• 年，卷（期）: 2009,（2）
• 页码范围: 247-251
• 页数: 5页
• 语种: 英文

摘要

We propose a scheme for realization a quantum Controlled-NOT gate operation using two four-level atoms through a selective atom-avity interaction in cavity quantum electrodynamics system.In our protocol, the quantum information is encoded on the stable ground states of the two atoms.During the interaction between atoms and single-mode vacuum cavity-field, the atomic spontaneous emission is negligible as the large atom-cavity detuning effectively suppresses the spontaneous decay of the atoms.The influences of the dissipation and the deviation of interaction time on fidelity and corresponding success probability of the quantum Controlled-NOT gate and the experimental feasibility of our proposal are also discussed.