Title :
Maximum entanglement of quantum-dot systems with single excitation in the spin van der Waals model
Author :
Miranowicz, A. ; Ozdemir, S.K. ; Koashi, M. ; Imoto, N. ; Hirayama, Y.
Author_Institution :
CREST Res. Team for Interacting Carrier Electron., Japan Sci. & Technol. Corp., Japan
Abstract :
Time evolution of entanglement of N quantum dots are 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, /spl middot//spl middot//spl middot/, 6 dots only.
Keywords :
quantum optics; semiconductor quantum dots; spin; van der Waals forces; Lipkin-Meshkov-Glick XY model; initially excited; maximum bipartite entanglement; maximum entanglement; quantum mechanics; quantum-dot systems; single dot; single excitation; spin van der Waals model; spin-1/2 van der Waals model; time evolution; unexcited dots; Density estimation robust algorithm; Distributed computing; Information processing; Laboratories; Nonlinear optics; Physics; Quantum computing; Quantum dots; Quantum entanglement; Quantum mechanics;
Conference_Titel :
Lasers and Electro-Optics, 2001. CLEO/Pacific Rim 2001. The 4th Pacific Rim Conference on
Conference_Location :
Chiba, Japan
Print_ISBN :
0-7803-6738-3
DOI :
10.1109/CLEOPR.2001.970843
