A Singlet State Generated with SQUIDs in Cavity QED

• 来源期刊: 理论物理通讯(英文版)
• 学科: 物理学
• 关键词: 腔QED 鱿鱼 量子比特 信息化改造 相互作用 真空状态 品质因数 系统
• 年，卷（期）: 2010,（12）
• 页码范围: 1003-1006
• 页数: 4页
• 分类号: O431 TS254.4
• 语种: 英文

摘要

We propose a scheme to generate a three-qubit three-level singlet state in cavity QED, by placing threeΛ-type SQUIDs in a single mode cavity.In this scheme, we make use of the interaction between the SQUIDs and cavityfiled, and the classical pulses.The cavity fields are in vacuum state during the whole operation processes of creating theentanglement, and there is no quantum information transformation between the SQUIDs and cavity fields.Because ofthe advantage of the SQUID-cavity system, the quality factor of the cavity is greatly relaxed.