AI Article Synopsis
- Experts are still uncertain about the ultimate construction of quantum computers, with various nanoscale solid-state methods being explored.
- Nanofabricated quantum dots are customizable and can be controlled and measured using advanced technologies, while epitaxial quantum dots are grown in vertical arrays within semiconductors.
- Single-walled carbon nanotubes may facilitate the assembly of quantum information-carrying molecules, although as the number of qubits increases, challenges in individually addressing these small structures may arise.
Article Abstract
Most experts agree that it is too early to say how quantum computers will eventually be built, and several nanoscale solid-state schemes are being implemented in a range of materials. Nanofabricated quantum dots can be made in designer configurations, with established technology for controlling interactions and for reading out results. Epitaxial quantum dots can be grown in vertical arrays in semiconductors, and ultrafast optical techniques are available for controlling and measuring their excitations. Single-walled carbon nanotubes can be used for molecular self-assembly of endohedral fullerenes, which can embody quantum information in the electron spin. The challenges of individual addressing in such tiny structures could rapidly become intractable with increasing numbers of qubits, but these schemes are amenable to global addressing methods for computation.
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| http://dx.doi.org/10.1098/rsta.2003.1214 | DOI Listing |
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