期刊
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
卷 243, 期 15, 页码 3855-3858出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssb.200671503
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We demonstrate experimentally a read-out method that distinguishes between two-electron spin states in a quantum dot. This scheme combines the advantages of the two existing mechanisms for spin-to-charge conversion with single-shot charge detection: a large difference in energy between the two states and a large difference in tunnel rate between the states and a reservoir. As a result, a spin measurement fidelity of 97% was achieved, which is much higher than previously reported fidelities. (C) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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