Controlled multiqubit entangled states and quantum transmission in quantum molecule-spin systems

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dc.creatorHao, Xiang
dc.creatorPan, Tao
dc.creatorZang, Taocheng
dc.creatorZhu, Shiqun
dc.date2009-03-16
dc.date.accessioned2026-07-07T12:52:50Z
dc.date.available2026-07-07T12:52:50Z
dc.descriptionhe multiqubit entangled states are coherently controlled in the quantum spin systems composed of $N+1$ interacting antiferromagnetic molecular rings. The tunable intermolecular couplings arise from the local exchange interactions between electron spins of $N$ circumjacent magnets and those of one central molecular ring. The quantum dynamics of such system is analytically deduced by the effective spin hamiltonian with anisotropic Heisenberg couplings. It is found that entangled $W$ states can be generated with a high precision under the circumstance of quantum fluctuations. The multiqubit entangled state is also transferred from some molecular rings to others by the selection of intermolecular couplings.
dc.description10 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0903.2705
dc.identifierhttp://arxiv.org/abs/0903.2705
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/223427
dc.subjectQuantum Physics
dc.titleControlled multiqubit entangled states and quantum transmission in quantum molecule-spin systems
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