Publications

For final theses written in our group, please scroll down .

2024

• Direct detection of down-converted photons spontaneously produced at a single Josephson junction
  Dorian Fraudet, Izak Snyman, Denis M. Basko, Sébastien Léger, Théo Sépulcre, Arpit Ranadive, Gwenael Le Gal, Alba Torras-Coloma, Serge Florens, Nicolas Roch
  arXiv:2405.00411v1

• Superconducting nitridized-aluminum thin films
  Alba Torras-Coloma, L. Martínez de Olcoz, E. Céspedes, Elia Bertoldo, David López-Núñez, S. Paul, W. Wernsdorfer, G. Rius, P. Forn-Díaz
  Alba Torras-Coloma et al 2024 Supercond. Sci. Technol. 37 035017 ( https://arxiv.org/abs/2308.06240 )

2023

• Magnetic penetration depth of Aluminum thin films
  David López-Núñez, Queralt Portell Montserrat, Gemma Rius, Elia Bertoldo, Alba Torras-Coloma, M. Martínez, P. Forn-Díaz
  arXiv:2311.14119

• Surface Acoustic Wave Filters for Superconducting Qubits
  D. Eslava, E. Guerrero, L. Acosta, R. Sagastizabal, P. Jamet, P. Forn-Díaz, P. de Paco
  2023 IEEE/MTT-S International Microwave Symposium - IMS 2023, San Diego, CA, USA, 2023, pp. 676-679
  https://doi.org/10.1109/IMS37964.2023.10188070

• Cosmic muon flux attenuation methods for superconducting qubit experiments
  E. Bertoldo, M. Martínez, B. Nedyalkov, P. Forn-Díaz
  arXiv:2303.04938

2021

• Transmission spectra of the driven, dissipative Rabi model in the ultrastrong-coupling regime
  L. Magazzù, P. Forn-Díaz, M. Grifoni
  Phys. Rev. A 104, 053711 (2021)

• One qubit as a Universal Approximant
  A. Pérez-Salinas, D. López-Núñez, A. García-Sáez, P. Forn-Díaz, J. I. Latorre
  Phys. Rev. A 104, 012405 (2021) ( https://arxiv.org/abs/2102.04032 )

• Startup Qilimanjaro—towards a European full-stack coherent quantum annealer platform
  V. Canivell, P. Forn-Díaz, A. García-Sáez, R. Sagastizabal
  European Physics Journal Quantum Technology 8, 6

• The 2021 quantum materials roadmap
  F. Giustino, J. H. Lee, F. Trier, M. Bibes, S. M. Winter, R. Valentí, Y.-W. Son, L. Taillefer, C. Heil, A. I. Figueroa, B. Plaçais, Q. Wu, O. V. Yazyev, E. Bakkers, J. Nygård, P. Forn-Díaz, S. De Franceschi, J. W. McIver, L. Foa Torres, T. Low, A. Kumar, R. Galceran, S. O. Valenzuela, M. V. Costache, A. Manchon, E.-A. Kim, G. R. Schleder, A. Fazzio, and S. Roche
  2021 J. Phys. Mater. 3 042006

2020

• Observation of Three-Photon Spontaneous Parametric Downconversion in a Superconducting Parametric Cavity
  C.W. Sandbo Chang, Carlos Sabín, P. Forn-Díaz, Fernando Quijandría, A.M. Vadiraj, I. Nsanzineza, G. Johansson, C.M. Wilson
  Physical Review X 10, 011011 (2020). Phys. Rev. X , arXiv:1907.08692

2019

• Ultrastrong coupling regimes of light-matter interaction
  P. Forn-Díaz, L. Lamata, E. Rico, J. Kono, E. Solano
  Reviews of Modern Physics 91, 025005 (2019). Rev. Mod. Phys. , arXiv:1804.09275

Publications prior to IFAE

2018

• Generating Multimode Entangled Microwaves with a Superconducting Parametric Cavity
  C. W. Sandbo Chang, M. Simoen, José Aumentado, Carlos Sabín, P. Forn-Díaz, A. M. Vadiraj, Fernando Quijandría, G. Johansson, I. Fuentes, C. M. Wilson
  Physical Review Applied 10, 044019 (2018). Phys. Rev. Appl. , arXiv:1709.00083

• Probing the strongly driven spin-boson model in a superconducting quantum circuit
  L. Magazzù*, P. Forn-Díaz*, R. Belyansky, J.-L. Orgiazzi, M. A. Yurtalan, M. R. Otto, A. Lupascu, C. M. Wilson, M. Grifoni
  Nature Communications 9, 1403 (2018). Nat. Commun. , arXiv:1709.01157
  (*) equal contribution

• Two-photon quantum Rabi model with superconducting circuits
  S. Felicetti, D. Z. Rossatto, E. Rico, E. Solano, P. Forn-Díaz
  Physical Review A 97, 013851 (2018). Phys. Rev. A , arXiv:1711.10032

2017

• On-Demand Microwave Generator of Shaped Single Photons
  P. Forn-Díaz, C. W. Warren, C. W. S. Chang, A. M. Vadiraj, C. M. Wilson
  Physical Review Applied 8, 054015 (2017). Phys. Rev. Appl. , arXiv:1706.06688

• Ultrastrong coupling of a single artificial atom to an electromagnetic continuum in the nonperturbative regime
  P. Forn-Díaz, J. J. García-Ripoll, B. Peropadre, J.-L. Orgiazzi, M. A. Yurtalan, R. Belyansky, C. M. Wilson, A. Lupascu
  Nature Physics 13, 39-43 (2017). Nat. Phys. , arXiv:1602.00416

2016

• Broken selection rule in the quantum Rabi model
  P. Forn-Díaz, G. Romero, C. J. P. M. Harmans, E. Solano, J. E. Mooij
  Scientific Reports 6, 26720 (2016). Sci. Rep. , arXiv:1510.03379

2012

• Two-frequency Jahn-Teller systems in circuit QED
  T. Dereli, Y. Gül, P. Forn-Díaz, Ö. E. Müstecaplıoğlu
  Physical Review A 85, 053841 (2012). Phys. Rev. A , arXiv:1109.1199

• Driven Dynamics and Rotary Echo of a Qubit Tunably Coupled to a Harmonic Oscillator
  S. Gustavsson, J. Bylander, F. Yan, P. Forn-Díaz, V. Bolkhovsky, D. Braje, G. Fitch, K. Harrabi, D. Lennon, J. Miloshi, P. Murphy, R. Slattery, S. Spector, B. Turek, T. Weir, P. B. Welander, F. Yoshihara, D. G. Cory, Y. Nakamura, T. P. Orlando, W. D. Oliver
  Physical Review Letters 108, 170503 (2012). Phys. Rev. Lett. , arXiv:1201.6341

2011

• Low gap superconducting single photon detectors for infrared sensitivity
  S. N. Dorenbos, P. Forn-Díaz, T. Fuse, A. H. Verbruggen, T. Zijlstra, T. M. Klapwijk, V. Zwiller
  Applied Physics Letters 98, 251102 (2011). Appl. Phys. Lett.

2010

• Observation of the Bloch-Siegert Shift in a Qubit-Oscillator System in the Ultrastrong Coupling Regime
  P. Forn-Díaz, J. Lisenfeld, D. Marcos, J. J. García-Ripoll, E. Solano, C. J. P. M. Harmans, J. E. Mooij
  Physical Review Letters 105, 237001 (2010). Phys. Rev. Lett. , arXiv:1005.1559

• Strong Coupling of a Quantum Oscillator to a Flux Qubit at Its Symmetry Point
  A. Fedorov, A. K. Feofanov, P. Macha, P. Forn-Díaz, C. J. P. M. Harmans, J. E. Mooij
  Physical Review Letters 105, 060503 (2010). Phys. Rev. Lett. , arXiv:1004.1560

• Switchable Ultrastrong Coupling in Circuit QED
  B. Peropadre, P. Forn-Díaz, E. Solano, J. J. García-Ripoll
  Physical Review Letters 105, 023601 (2010). Phys. Rev. Lett. , arXiv:0912.3456

2009

• Josephson squelch filter for quantum nanocircuits
  P. Forn-Díaz, R. N. Schouten, W. A. den Braver, J. E. Mooij, C. J. P. M. Harmans
  Applied Physics Letters 95:4 (2009). Appl. Phys. Lett. , arXiv:0905.1707

Theses