Scheme for Implementing an N-Qubit Phase Gate via Selective Atom-Field Interaction with Cavity Quantum Electrodynamics

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2008,（1）
• 页码范围: 27-30
• 页数: 4页
• 语种: 英文

摘要

A scheme for implementing a two-qubit phase gate with atoms sent through a high-Q optical cavity is proposed by choosing nonidentical coupling constants between the atoms and cavity.The atomic spontaneous emission can be suppressed due to the large atom-field detuning.Moreover,the scheme can be generalized to implement an N-qubit phase gate and the gating time does not change with an increase of the number of qubits.