Quantum Computing with Electron Spins in Quantum Dots

Details Quantum Computing with Electron Spins in Quantum Dots Quantum Computing with Electron Spins in Quantum Dots

2009-06-22

arxiv.org/abs/0906.4045v2

La Rivista del Nuovo Cimento 33, 7 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Lecture notes for Course CLXXI "Quantum Coherence in Solid State Systems" Int. School of Physics "Enrico Fermi", Varenna, July

Scientific paper

10.1393/ncr/i2010-10056-y

Several topics on the implementation of spin qubits in quantum dots are reviewed. We first provide an introduction to the standard model of quantum computing and the basic criteria for its realization. Other alternative formulations such as measurement-based and adiabatic quantum computing are briefly discussed. We then focus on spin qubits in single and double GaAs electron quantum dots and review recent experimental achievements with respect to initialization, coherent manipulation and readout of the spin states. We extensively discuss the problem of decoherence in this system, with particular emphasis on its theoretical treatment and possible ways to overcome it.

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