Nonlocal entanglement analysis using quantum dot and microcavity coupled system

Abstract

We propose an optimal nonlocal entanglement analysis protocol for a two-electron system exploiting the quantum dot and microcavity coupled system, resorting to the projective measurement on the entangled photon pair. The maximally entangled states can, in principle, been distinguished by two nonlocal parties without destroying them, which will improve the efficiency of long-distance quantum communication.

Keywords:

• nonlocal entanglement analysis
• quantum dot and microcavity
• quantum optics
• quantum information

Acknowledgements

This work is supported by the National Fundamental Research Program Grant No. 2010CB923202, Specialized Research Fund for the Doctoral Program of Education Ministry of China No. 20090005120008, the Fundamental Research Funds for the Central Universities.