Dynamics of entanglement between quantum dot spin-qubits

Details Dynamics of entanglement between quantum dot spin-qubits Dynamics of entanglement between quantum dot spin-qubits

2002-12-06

arxiv.org/abs/cond-mat/0212141v1

Physics

Condensed Matter

22 pages, 7 figures included, to appear in the Proceedings of the E. Fermi School, "Quantum Phenomena of Mesoscopic Systems",

Scientific paper

We briefly review the physics of gate operations between quantum dot spin-qubits and analyze the dynamics of quantum entanglement in such processes. The indistinguishable character of the electrons whose spins realize the qubits gives rise to further entanglement-like quantum correlations that go beyond simple antisymmetrization effects. We also summarize further recent results concerning this type of quantum correlations of indistinguishable particles. Finally we discuss decoherence properties of spin-qubits when coupled to surrounding nuclear spins in a semiconductor nanostructure

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