  As the quantum generation of electronics takes the stage, a cast of important
support electronics is needed to connect these novel devices to our classical
worlds. In the case of superconducting electronics, this is a challenge because
the Josephson junction devices they are based upon require tiny current pulses
to create and manipulate the single flux quanta which guide their operation.
Difficulty arises in transitioning these signals through large temperature
gradients for connection to semiconductor components. In this work, we present
nano superconducting quantum interference devices (SQUID) with critical
dimensions as small as 10 nm from the high-transition-temperature
superconductor YBa$_2$Cu$_3$O$_{7-\delta}$ (YBCO). We integrate these
nano-SQUIDs with nano-isolated inductively coupled control lines to create a
low power superconducting output driver capable of transimpedance conversion
over a very wide temperature range.
