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Isotopically engineered silicon/silicon-germanium nanostructures as basic elements for a nuclear spin quantum computer | I. Shlimak
; V.I. Safarov
; I.D. Vagner
; | Date: |
13 Feb 2001 | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | Abstract: | The idea of quantum computation is the most promising recent developments in the high-tech domain, while experimental realization of a quantum computer poses a formidable challenge. Among the proposed models especially attractive are semiconductor based nuclear spin quantum computer’s (S-NSQC), where nuclear spins are used as quantum bistable elements, ’’qubits’’, coupled to the electron spin and orbital dynamics. We propose here a scheme for implementation of basic elements for S-NSQC’s which are realizable within achievements of the modern nanotechnology. These elements are expected to be based on a nuclear-spin-controlled isotopically engineered Si/SiGe heterojunction, because in these semiconductors one can vary the abundance of nuclear spins by engineering the isotopic composition. A specific device is suggested, which allows one to model the processes of recording, reading and information transfer on a quantum level using the technique of electrical detection of the magnetic state of nuclear spins. Improvement of this technique for a semiconductor system with a relatively small number of nuclei might be applied to the manipulation of nuclear spin ’’qubits’’ in the future S-NSQC. | Source: | arXiv, cond-mat/0102228 | Services: | Forum | Review | PDF | Favorites |
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