Spin-based quantum information processing with semiconductor quantum dots and cavity QED

Details Spin-based quantum information processing with semiconductor quantum dots and cavity QED Spin-based quantum information processing with semiconductor quantum dots and cavity QED

2002-09-10

arxiv.org/abs/quant-ph/0209070v1

Physics

Quantum Physics

RevTex, 2 figures

Scientific paper

10.1103/PhysRevA.67.014306

A quantum information processing scheme is proposed with semiconductor quantum dots located in a high-Q single mode QED cavity. The spin degrees of freedom of one excess conduction electron of the quantum dots are employed as qubits. Excitonic states, which can be produced ultrafastly with optical operation, are used as auxiliary states in the realization of quantum gates. We show how properly tailored ultrafast laser pulses and Pauli-blocking effects, can be used to achieve a universal encoded quantum computing.

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