Quantum information processing using quantum dot spins and cavity-QED
摘要
The electronic spin degrees of freedom in semiconductors typically have decoherence times that are several orders of magnitude longer than other relevant timescales. A solid-state quantum computer based on localized electron spins as qubits is therefore of potential interest. Here, a scheme that realizes controlled interactions between two distant quantum dot spins is proposed. The effective long-range interaction is mediated by the vacuum field of a high finesse microcavity. By using conduction-band-hole Raman transitions induced by classical laser fields and the cavity-mode, parallel controlled-not operations and arbitrary single qubit rotations can be realized. Optical techniques can also be used to measure the spin-state of each quantum dot.
引用
@article{arxiv.quant-ph/9904096,
title = {Quantum information processing using quantum dot spins and cavity-QED},
author = {A. Imamoglu and D. D. Awschalom and G. Burkard and D. P. DiVincenzo and D. Loss and M. Sherwin and A. Small},
journal= {arXiv preprint arXiv:quant-ph/9904096},
year = {2007}
}
备注
Revised version including a method to realize parallel two-qubit operations