TY - GEN AU - M. Mariantoni, E. P. Menzel, F. Deppe, M. A. Araque Caballero, A. Baust, T. Niemczyk, E. Hoffmann, E. Solano, A. Marx, R. Gross T1 - Planck Spectroscopy and Quantum Noise of Microwave Beam Splitters CY - PY - 2010 PB - T3 - Physical Review Letters VL - 105 UR - http://dx.doi.org/10.1103/PhysRevLett.105.133601 SN - 0031-9007