Charging effects in the inductively shunted Josephson junction.
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 gives 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.
Koch
Jens
J
Department of Physics, Yale University, New Haven, Connecticut 06520, USA.
Manucharyan
V
V
Devoret
M H
MH
Glazman
L I
LI