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Hybrid semiconductor/superconductor devices constitute an important platformfor a wide range of applications, from quantum computing totopological-state-based architectures. Here, we demonstrate full modulation ofthe interference pattern in a superconducting interference device with twoparallel islands of ballistic InAs quantum wells separated by a trench, byacting independently on two side-gates. This so far unexplored geometry enablesus to tune the device with high precision from a SQUID-like to aFraunhofer-like behavior simply by electrostatic gating, without the need foran additional in-plane magnetic field. These measurements are successfullyanalyzed within a theoretical model of an extended tunnel Josephson junction,taking into account the focusing factor of the setup. The impact of theseresults on the design of novel devices is discussed.

Full electrostatic control of quantum interference in an extended trenched Josephson junction