TY - JOUR AU - Gao, Jiansong AU - Irwin, Kent AU - Hilton, Gene AU - Mates, John AU - Schmidt, Daniel AU - Vale, Leila AU - Lehnert, Konrad AU - Mallet, Francois AU - Zmuidzinas, Jonas C2 - Physical Review Letters DA - 2011-06-09 DO - https://doi.org/10.1063/1.3597156 LA - en M1 - 98 PB - Physical Review Letters PY - 2011 TI - Strongly quadrature-dependent noise in superconducting microresonators measured at the vacuum-noise limit ER -