Development of KI-TWPAs for the DARTWARS project

  1. Felix Ahrens,
  2. Elena Ferri,
  3. Guerino Avallone,
  4. Carlo Barone,
  5. Matteo Borghesi,
  6. Luca Callegaro,
  7. Giovanni Carapella,
  8. Anna Paola Caricato,
  9. Iacopo Carusotto,
  10. Alessandro Cian,
  11. Alessandro D'Elia,
  12. Daniele Di Gioacchino,
  13. Emanuele Enrico,
  14. Paolo Falferi,
  15. Luca Fasolo,
  16. Marco Faverzani,
  17. Giovanni Filatrella,
  18. Claudio Gatti,
  19. Andrea Giachero,
  20. Damiano Giubertoni,
  21. Veronica Granata,
  22. Claudio Guarcello,
  23. Danilo Labranca,
  24. Angelo Leo,
  25. Carlo Ligi,
  26. Giovanni Maccarrone,
  27. Federica Mantegazzini,
  28. Benno Margesin,
  29. Giuseppe Maruccio,
  30. Renato Mezzena,
  31. Anna Grazia Monteduro,
  32. Roberto Moretti,
  33. Angelo Nucciotti,
  34. Luca Oberto,
  35. Luca Origo,
  36. Sergio Pagano,
  37. Alex Stephane Piedjou,
  38. Luca Piersanti,
  39. Alessio Rettaroli,
  40. Silvia Rizzato,
  41. Simone Tocci,
  42. Andrea Vinante,
  43. and Mario Zannoni
Noise at the quantum limit over a broad bandwidth is a fundamental requirement for future cryogenic experiments for neutrino mass measurements, dark matter searches and Cosmic Microwave Background (CMB) measurements as well as for fast high-fidelity read-out of superconducting qubits. In the last years, Josephson Parametric Amplifiers (JPA) have demonstrated noise levels close to the quantum limit, but due to their narrow bandwidth, only few detectors or qubits per line can be read out in parallel. An alternative and innovative solution is based on superconducting parametric amplification exploiting the travelling-wave concept. Within the DARTWARS (Detector Array Readout with Travelling Wave AmplifieRS) project, we develop Kinetic Inductance Travelling-Wave Parametric Amplifiers (KI-TWPAs) for low temperature detectors and qubit read-out. KI-TWPAs are typically operated in a threewave mixing (3WM) mode and are characterised by a high gain, a high saturation power, a large amplification bandwidth and nearly quantum limited noise performance. The goal of the DARTWARS project is to optimise the KI-TWPA design, explore new materials, and investigate alternative fabrication processes in order to enhance the overall performance of the amplifier. In this contribution we present the advancements made by the DARTWARS collaboration to produce a working prototype of a KI-TWPA, from the fabrication to the characterisation.
arxiv pdf

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