Experimental investigation of hybrid single-electron turnstiles with high charging energy

Details Experimental investigation of hybrid single-electron turnstiles with high charging energy Experimental investigation of hybrid single-electron turnstiles with high charging energy

2009-03-20

arxiv.org/abs/0903.3482v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

We present an experimental study of hybrid turnstiles with high charging energies in comparison to the superconducting gap. The device is modeled with the sequential tunneling approximation. The backtunneling effect is shown to limit the amplitude of the gate drive and thereby the maximum pumped current of the turnstile. We compare results obtained with sine and square wave drive and show how a fast rise time can suppress errors due to leakage current. Quantized current plateaus up to 160 pA are demonstrated.

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