2002/12/06 by John Schliemann, Daniel Loss, Schliemann, John +1
Computer Science · Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #Quantum Computing Algorithms and Architecture #Quantum and electron transport phenomena #Quantum-Dot Cellular Automata #cond-mat
paper · pdf · doi:10.48550/arxiv.cond-mat/0212141
22 pages, 7 figures included, to appear in the Proceedings of the E. Fermi School, "Quantum Phenomena of Mesoscopic Systems", 9 - 19 July 2002, Varenna, Italy
arxiv created 2002/12/06 · openalex publication_date 2002/12/06 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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