Fig. 1: Experimental setup and principle of the photonic heat transport in high ohmic environment.
From: Bolometric detection of Josephson inductance in a highly resistive environment
a Colored scanning electron micrograph (scale bar: 5 μm) highlighting the (Cr) normal metal (blue and red) and the aluminum superconducting leads (light blue). The Josephson energy of the SQUID is tuned with an external magnetic field. Aluminum leads (vertical, light blue) are connected through an oxide tunnel barrier to the Cr-strip to cool down its electrons locally or as an electronic temperature sensor using a floating DC current source. b Schematic illustration of the thermal model of the system. The drain-source heat flow \({\dot{Q}}_{\nu }\) is adjusted by the SQUID. The source and drain electron baths are thermally coupled to the phonon bath (which here is hotter), receiving a power \({\dot{Q}}_{{{{{{{{\rm{ep}}}}}}}},{{{{{{{\rm{S}}}}}}}}}\) and \({\dot{Q}}_{{{{{{{{\rm{ep}}}}}}}},{{{{{{{\rm{D}}}}}}}}}\), respectively. Wiggly lines highlight the strong interaction between the SQUID and the ohmic environment, mediated by photons.
