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Single-spin measurements for quantum computation using magnetic resonance force microscopy
KTH, Superseded Departments, Biotechnology.
2003 (English)In: Superlattices and Microstructures, ISSN 0749-6036, E-ISSN 1096-3677, Vol. 34, no 06-mar, 509-511 p.Article in journal (Refereed) Published
Abstract [en]

The quantum theory of a single-spin measurement using magnetic resonance force microscopy is presented. We use an oscillating cantilever-driven adiabatic reversal technique. The frequency shift of the cantilever vibrations is estimated. We show that the frequency shift causes the formation of a Schrodinger cat state for the cantilever. The interaction between the cantilever and the environment quickly destroys the coherence between the two cantilever trajectories. It is shown that using partial adiabatic reversals one can obtain a significant increase in the frequency shift. We discuss the possibility of sub-magneton spin density detection in molecules using magnetic resonance force microscopy.

Place, publisher, year, edition, pages
2003. Vol. 34, no 06-mar, 509-511 p.
Keyword [en]
magnetic resonance force microscopy, magnetic resonance, cantilever, quantum measurement, Schrodinger cat state, decoherence, single-spin measurement
URN: urn:nbn:se:kth:diva-23682ISI: 000223571600058OAI: diva2:342381
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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