Stabilized parametric Cooper-pair pumping in a linear array of coupled Josephson junctions

Details Stabilized parametric Cooper-pair pumping in a linear array of coupled Josephson junctions Stabilized parametric Cooper-pair pumping in a linear array of coupled Josephson junctions

2006-07-17

arxiv.org/abs/cond-mat/0607416v2

Phys. Rev. Lett. 98, 127001 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Title changed, other corrections and modifications requested from Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.98.127001

We present an experimentally realizable stabilized charge pumping scheme in a linear array of Cooper-pair boxes. The system design intrinsically protects the pumping mechanism from severe errors, especially current reversal and spontaneous charge excitation. The quantum Zeno effect is implemented to further diminish pumping errors. The characteristics of this scheme are considered from the perspective of improving the current standard. Such an improvement bears relevence to the closure of the so-called measurement triangle (see D. Averin [Nature 434, 285 (2005)]).

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