Linearity of quantized voltages generated by a josephson junction array

Abstract

Linearity of quantized voltages generated by a Josephson junction array is experimentally tested at every 100mV in a voltage range of 100mV to 1 volt. The priciple is to measure the resistance ratios of resistors connected in series and examining the consistency among the resistance ratios. The accuracy of measurement is expected to be few parts in 10/sup 8/.