Tomás Ramos

Tomás Ramos

Postdoctoral Researcher

Ramón y Cajal Contract, IFF-CSIC, Madrid, Spain (2022).
PhD in Physics, University of Innsbruck, Austria (2016).
MSc in Physics, University of Concepción, Chile (2011).

Scientific interests

  • Quantum optics
  • Quantum information and technology
  • Open quantum many-body physics
  • Classical and quantum noise
  • Nanophotonics
  • Superconducting circuits
  • Atomic, molecular, and optical (AMO) physics

Talks and Outreach

Some of my latest talks and the outreach activity “The power of light” available on YouTube.


  • R. Dassonneville, T. Ramos, …, J.J. García-Ripoll, N. Roch, and O. Buisson, “Qubit readout using in-situ bifurcation of a nonlinear dissipative polariton in the mesoscopic regime”, arXiv:2210.04793
  • T. Ramos, A. Gómez-León, J.J. García-Ripoll, A. González-Tudela, D. Porras, “Directional Josephson traveling-wave parametric amplifier via non-Hermitian topology”, arXiv:2207.13728.
  • A. Gómez-León, T. Ramos, A. González-Tudela, D. Porras, “Non-Hermitian topological phases in traveling-wave parametric amplifiers”, arXiv:2207.13715.
  • L. Pereira, J.J. García-Ripoll, T. Ramos, Parallel QND measurement tomography of multi-qubit quantum devices, arXiv:2204.10336.
  • M. Li, J.J. García-Ripoll, T. Ramos, “Scalable multiphoton generation from cavity-synchronized single-photon sources”, arXiv:2009.02382.

Selected publications

  • L. Pereira, J.J. García-Ripoll, T. Ramos, “Complete physical characterization of QND measurements via tomography”, Phys. Rev. Lett. 129, 010402 (2022).
  • H. Le Jeannic, A. Tiranov, J. Carolan, T. Ramos, …, N. Rotenberg, L. Midolo, J.J. García-Ripoll, A.S. Sørensen, P. Lodahl, “Dynamical photon-photon interaction mediated by a quantum emitter”, Nat. Phys. 18, 1191 (2022)
  • T. Ramos, J.J. García-Ripoll, D. Porras, “Topological input-output theory for directional amplification”, Phys. Rev. A 103, 033513 (2021).
  • H. Le Jeannic, T. Ramos, S.F. Simonsen, T. Pregnolato, Z. Liu, R. Schott, A.D. Wieck, A. Ludwig, N. Rotenberg, J.J. García-Ripoll, and P. Lodahl, “Experimental reconstruction of the few-photon nonlinear scattering matrix from a single quantum dot in a nanophotonic waveguide”, Phys. Rev. Lett. 126, 023603 (2021).
  • R. Dassonneville, T. Ramos, V. Milchakov, L. Planat, E. Dumur, F. Foroughi, J. Puertas, S. Leger, K. Bharadwaj, J. Delaforce, C. Naud, W. Hasch-Guichard, J. J. García-Ripoll, N. Roch, and O. Buisson, “Fast high fidelity quantum non-demolition qubit readout via a non-perturbative cross-Kerr coupling”, Phys. Rev.X 10, 011045 (2020).
  • T. Ramos, J.J. García-Ripoll,“Multiphoton Scattering Tomography with Coherent States”, Phys. Rev. Lett.109, 153601 (2017).
  • T. Ramos, H. Pichler, A. J. Daley, P. Zoller, “Quantum Spin-Dimers from Chiral Dissipation in Cold Atom Chains”, Phys. Rev. Lett. 113, 237203 (2014).
  • T. Ramos, V. Sudhir, K. Stannigel, P. Zoller and T. J. Kippenberg,“Nonlinear quantum Optomechanics via individual intrinsic two-level defects”, Phys. Rev. Lett. 110, 193602 (2013).