J. Ireland, D. Henderson, Jonathan M. Williams, O. Kieler, J. Kohlmann, R. Behr, J. Gran, H. Malmbekk, K. Lind, Chi Kwong Tang
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An optoelectronic coupling for pulse-driven Josephson junction arrays
The optoelectronic coupling for a pulse-driven Josephson junction array (JJA) for use as a quantum voltage synthesizer has been designed. This system uses optoelectronic components to drive a group of JJAs in parallel. Since the drive system is electrically isolated from the JJAs, they can be connected in series, leading to a higher output voltage. A thin film circuit, including interdigitated capacitors to couple a photodiode to the JJAs has been designed and tested and shown to meet the design goals.