On the Realization of Quantum Computing Devices with Carbon Nanotube Quantum Dots

Koji ISHIBASHI  Satoshi MORIYAMA  Tomoko FUSE  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E87-C   No.11   pp.1799-1803
Publication Date: 2004/11/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on New System Paradigms for Integrated Electronics)
Category: 
Keyword: 
quantum dot,  quantum computing device,  charge qubit,  spin qubit,  carbon nanotube,  

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Summary: 
Quantum dots are one of the possible building blocks for the quantum computing device. We discuss on use of carbon nanotubes for fabrication of the quantum dot, in terms of their unique physical properties and energy scales which might be advantageous for functionalities of the quantum computing device. Simple schemes of a charge qubit and a spin qubit are described, followed by the current status of the fabrication and transport measurements of the nanotube quantum dot. Based on the basic properties and the estimated energy scales of the dot, we discuss advantages and problems of the carbon nanotube for the quantum computing device. The nanotube quantum dot may have a great advantage for the spin qubit.