Open AccessN-qubitW state of spatially separated single molecule magnets
Author(s) -
XinYou Lü,
Peijun Song,
Jibing Liu,
Xinling Yang
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.014298
Subject(s) - quantum entanglement , qubit , quantum network , single mode optical fiber , excited state , physics , scheme (mathematics) , optics , topology (electrical circuits) , optical fiber , quantum channel , quantum , quantum mechanics , mathematical analysis , mathematics , combinatorics
A simple scheme is proposed to generate a N-qubit W state of spatiall separated single molecule magnets (SMM) in a cavity-fiber-cavity system. In the present scheme, the framework consisting of entangled qubits can be expediently designed according to our needs. By quantitatively discussing the case of N=4, we show that the effects of SMM's spontaneous decay and photon leakage out of fiber can be suppressed in our scheme due to the presence of virtual excited processes in SMM and fiber modes. Moreover, we also show that the present scheme is robust with respect to some deviations of experimental parameters, and as a result, the present investigation provides a research clue for realizing multi-partite entanglement between distant SMMs solid-state nanostructures, which may result in a substantial impact on the progress of multi-node quantum information network.