Maximum entanglement of quantum-dot systems with single excitation in the spin van der Waals model

Details Maximum entanglement of quantum-dot systems with single excitation in the spin van der Waals model Maximum entanglement of quantum-dot systems with single excitation in the spin van der Waals model

2001-09-27

arxiv.org/abs/quant-ph/0109144v1

Physics

Quantum Physics

2 pages, 3 figures

Scientific paper

Time evolution of entanglement of N quantum dots is analyzed within the
spin-1/2 van der Waals (or Lipkin-Meshkov-Glick) XY model. It is shown that,
for a single dot initially excited and disentangled from the remaining
unexcited dots, the maximum bipartite entanglement can be obtained in the
systems of N=2,...,6 dots only.

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