QUANTUM DOT COMPUTING GATES
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Semiconductor quantum dots are a promising candidate for future quantum computer devices. Presently, there are three major proposals for designing quantum computing gates based on quantum dot technology: (i) electrons trapped in microcavity; (ii) spintronics; (iii) biexcitons. We survey these designs and show mathematically how, in principle, they will generate 1-bit rotation gates as well as 2-bit entanglement and, thus, provide a class of universal quantum gates. Some physical attributes and issues related to their limitations, decoherence and measurement are also discussed. © 2006 World Scientific Publishing Company.
author list (cited authors)
CHEN, G., DIAO, Z., KIM, J. U., NEOGI, A., URTEKIN, K., & ZHANG, Z.