Princeton University Gravity Group Lunch Seminar - Added

The QUBIC ground-based experiment targets to improve the current constraints on the amplitude of the primordial gravitational waves. QUBIC exploits the unique technique of bolometric interferometry, combining the sensitivity of bolometric detectors with the control of systematic effects typical of interferometers. QUBIC will observe the sky in two frequency bands centered at 150 and 220GHz with NbSi Transition Edge Sensors read out with Time Domain Multiplexing. A cryogenic stepped Half Wave Plate will modulate the incoming polarized signal while an array of 400 back-to-back horns will perform the self-calibration, for a reliable control of the systematic effects. I have been working for the QUBIC bolometric interferometer since last summer. In the spirit of making connections, after a brief review of the experiment, I will update the QUBIC status and I will present other topics on which I am working.