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Article overview
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Quantum Information is Physical | | David P. DiVincenzo
; Daniel Loss
; | | Date: |
23 Oct 1997 | | Journal: | Superlattices and Microstructures 23, 419 (1998) | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall quant-ph | | Affiliation: | IBM) and Daniel Loss (U. Basel | | Abstract: | We discuss a few current developments in the use of quantum mechanically coherent systems for information processing. In each of these developments, Rolf Landauer has played a crucial role in nudging us and other workers in the field into asking the right questions, some of which we have been lucky enough to answer. A general overview of the key ideas of quantum error correction is given. We discuss how quantum entanglement is the key to protecting quantum states from decoherence in a manner which, in a theoretical sense, is as effective as the protection of digital data from bit noise. We also discuss five general criteria which must be satisfied to implement a quantum computer in the laboratory, and we illustrate the application of these criteria by discussing our ideas for creating a quantum computer out of the spin states of coupled quantum dots. | | Source: | arXiv, cond-mat/9710259 | | Services: | Forum | Review | PDF | Favorites | |
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