Labs

This refrigerator is dedicated to combined microwave and quantum-transport measurements. It is equipped with two cryogenic low-noise amplifiers (LNAs) covering 0.02–2 GHz and 4–8 GHz, suitable for experiments on superconducting circuits, resonators, and qubits.

This microscope-assisted station is essential for van der Waals assembly of 2D materials. Built in-house by D. Dufeu, it is shared with the Quant2M team.

Our newly commissioned e-beam evaporator, dedicated to both disordered and conventional superconductors, enables new microwave circuits that combine high-inductance materials with conventional aluminum devices. Features include angle evaporation (tilt and planetary rotation), argon milling, dynamic and static oxidation via a dedicated O₂ shower, and a nitrogen-cooled sample holder, with a base pressure in the low 10⁻⁸ mbar range.

Our scanning-probe activity relies on two state-of-the-art low-temperature microscopes: (i) a 300 mK Scanning Gate Microscope (SGM) with an 8 T solenoid, dedicated to imaging electron flow in semiconductors and probing correlated states such as the Kondo cloud; (ii) a 20 mK / 14 T Scanning Tunneling Microscope (STM) with a 104 mm cold-bore solenoid. The hybrid STM/AFM head uses a Pt/Ir tunneling tip mounted on a tuning-fork force sensor and targets mesoscopic devices. This instrument enables studies of SU(4) symmetry-breaking phases in graphene’s zeroth Landau level and tunneling spectroscopy of quantum Hall edge channels.