Journal ArticleZ Wang, M Xu, X Han, W Fu, S Puri, SM Girvin, HX Tang, S Shankar, MH Devoret Physical Review Letters 126 (18), 180501 (2021) May 5, 2021Upload pdf: 2021-z_wang-quantum_microwave_radiometry_w-a_superconducting_qubit-physrevlett.126.180501.pdfhttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.180501