Garcí Ripol, Juan JosePorras Torres, Doego2023-06-202023-06-202012-01-260031-900710.1103/PhysRevLett.108.043602https://hdl.handle.net/20.500.14352/42801©2012 American Physical Society. We acknowledge support from research Projects No. QUITEMAD S2009-ESP-1594, No. MICINN FIS2009-10061, and No. CAM-UCM/910758, RyC Contract No. Y200200074, and EU Project PROMISCE.We show that inducing sidebands in the emission of a single emitter into a one-dimensional waveguide, together with a dissipative repumping process, a photon field is cooled down to a multimode squeezed vacuum. Our method does not require being in the strong coupling regime, works with a continuum of propagating field modes, and leads to sources of tunable multimode squeezed light in circuit-QED systems.engjournal articlehttp://doi.org/10.1103/PhysRevLett.108.043602https://journals.aps.orgopen access51CircuitSystemWaveFísica (Física)22 Física