La Rivista del Nuovo Cimento

Year 2010 - Issue 7 - July

Quantum computing with electron spins in quantum dots

Authors: Robert Andrzej Żak, Beat Röthlisberger, Stefano Chesi, Daniel Loss
DOI: 10.1393/ncr/i2010-10056-y
pp. 345-399
Published online 25 June 2010
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Abstract: 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.