W state generation and effect of cavity photons on the purification of dot-like single quantum well excitons

C. M. Li, Y. N. Chen, C. W. Luo, J. Y. Hsieh, D. S. Chuu

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

A scheme of three-particle entanglement purification is presented in this work. The physical system undertaken for investigation is dot-like single quantum well excitons independently coupled through a single microcavity mode. The theoretical framework for the proposed scheme is based on the quantum jump approach for analyzing the progress of the hible-exciton entanglement as a series of conditional measurement has been taken on the cavity field state. We first investigate how cavity photon affects the purity of the double-exciton state and the purification efficiency in two-particle protocol. Then we extend the two-particle case and conclude that the three-exciton state can be purified into W state, which involves the one-photon-trapping phenomenon, with a high yield. Finally, an achievable setup for purification using only modest and presently feasible technologies is also proposed.

Original languageEnglish
Title of host publicationQuantum Information Science
Subtitle of host publicationProceedings of the 1st Asia-Pacific Conference: National Cheng Kung University, Taiwan Dec 10-13, 2004
PublisherWorld Scientific Publishing Co.
Pages111-122
Number of pages12
ISBN (Electronic)9789812701633
ISBN (Print)9812564608, 9789812564603
DOIs
Publication statusPublished - 2005 Jan 1

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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    Li, C. M., Chen, Y. N., Luo, C. W., Hsieh, J. Y., & Chuu, D. S. (2005). W state generation and effect of cavity photons on the purification of dot-like single quantum well excitons. In Quantum Information Science: Proceedings of the 1st Asia-Pacific Conference: National Cheng Kung University, Taiwan Dec 10-13, 2004 (pp. 111-122). World Scientific Publishing Co.. https://doi.org/10.1142/9789812701633_0010