Complete entanglement analysis on electron spins using quantum dot and microcavity coupled system

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• 作者：Chuan Wang (1) (2)
  LingYan He (1)
  Yong Zhang (1)
  HaiQiang Ma (1)
  Ru Zhang (1) (2)
  
• 关键词：entanglement analysis ; quantum dot ; microcavity
• 刊名：SCIENCE CHINA Physics, Mechanics & Astronomy
• 出版年：2013
• 出版时间：November 2013
• 年：2013
• 卷：56
• 期：11
• 页码：2054-2058
• 全文大小：
• 作者单位：Chuan Wang (1) (2)
  LingYan He (1)
  Yong Zhang (1)
  HaiQiang Ma (1)
  Ru Zhang (1) (2)
  
  1. School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, China
  2. State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China
  
• ISSN：1869-1927

文摘

We present an entanglement analysis protocol on entangled electron spins using quantum dot (QD) and microcavity coupled system. Each quantum dot is placed in the microcavity and ancilla photon input-output process could be used to check the parity of the quantum dots. After the parity check process, the user only needs to measure the spin direction of the QD spin, and the state information can be readout completely. The feasibility of our scheme and the experimental challenge are discussed by considering currently available techniques.