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arXiv · 0902.2980

Charging effects in the inductively shunted Josephson junction

Jens Koch·V. Manucharyan·M. H. Devoret·L. I. Glazman
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Abstract

The choice of impedance used to shunt a Josephson junction determines if the charge transferred through the circuit is quantized: a capacitive shunt renders the charge discrete, whereas an inductive shunt leads to continuous charge. This discrepancy leads to a paradox in the limit of large inductances L. We show that while the energy spectra of the capacitively and inductively shunted junction are vastly different, their high-frequency responses become identical for large L. Inductive shunting thus opens the possibility to observe charging effects unimpeded by charge noise.

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Jens Koch, V. Manucharyan, M. H. Devoret, L. I. Glazman. 2009-10-20. Charging effects in the inductively shunted Josephson junction. https://doi.org/10.1103/physrevlett.103.217004

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