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Nondestructive measurement of electron spins in a quantum dot

Meunier, T. ; Vink, I. T. ; Beveren, L. H. Willems van ; Koppens, F. H. L. ; Tranitz, Hans-Peter ; Wegscheider, Werner ; Louwenhoven, L. P. ; Vandersypen, L. M. K.
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Date of publication of this fulltext: 25 Jan 2010 13:24


Abstract

We propose and implement a nondestructive measurement that distinguishes between two-electron spin states in a quantum dot. In contrast to earlier experiments with quantum dots, the spins are left behind in the state corresponding to the measurement outcome. By measuring the spin states twice within a time shorter than the relaxation time T1, correlations between the outcomes of consecutive ...

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