التفاصيل البيبلوغرافية
| العنوان: |
W STATE GENERATION AND EFFECT OF CAVITY PHOTONS ON THE PURIFICATION OF DOT-LIKE SINGLE QUANTUM WELL EXCITONS. |
| المؤلفون: |
LI, C.-M., CHEN, Y.-N., LUO, C.-W., HSIEH, J.-Y., CHUU, D.-S. |
| المصدر: |
International Journal of Quantum Information; Nov2005 Supplement, Vol. 3, p111-122, 12p, 2 Diagrams, 2 Graphs |
| مصطلحات موضوعية: |
ENERGY-band theory of solids, POTENTIAL theory (Physics), QUANTUM wells, EXCITON theory, PHOTONS |
| مستخلص: |
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 trible-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. [ABSTRACT FROM AUTHOR] |
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