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Quantum bath engineering of a high impedance microwave mode through quasiparticle tunneling

Author

Listed:
  • Gianluca Aiello

    (CNRS, Université Paris Saclay)

  • Mathieu Féchant

    (CNRS, Université Paris Saclay)

  • Alexis Morvan

    (CNRS, Université Paris Saclay)

  • Julien Basset

    (CNRS, Université Paris Saclay)

  • Marco Aprili

    (CNRS, Université Paris Saclay)

  • Julien Gabelli

    (CNRS, Université Paris Saclay)

  • Jérôme Estève

    (CNRS, Université Paris Saclay)

Abstract

In microwave quantum optics, dissipation usually corresponds to quantum jumps, where photons are lost one by one. Here we demonstrate a new approach to dissipation engineering. By coupling a high impedance microwave resonator to a tunnel junction, we use the photoassisted tunneling of quasiparticles as a tunable dissipative process. We are able to adjust the minimum number of lost photons per tunneling event to be one, two or more, through a dc voltage. Consequently, different Fock states of the resonator experience different loss processes. Causality then implies that each state experiences a different energy (Lamb) shift, as confirmed experimentally. This photoassisted tunneling process is analogous to a photoelectric effect, which requires a quantum description of light to be quantitatively understood. This work opens up new possibilities for quantum state manipulation in superconducting circuits, which do not rely on the Josephson effect.

Suggested Citation

  • Gianluca Aiello & Mathieu Féchant & Alexis Morvan & Julien Basset & Marco Aprili & Julien Gabelli & Jérôme Estève, 2022. "Quantum bath engineering of a high impedance microwave mode through quasiparticle tunneling," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34762-z
    DOI: 10.1038/s41467-022-34762-z
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    References listed on IDEAS

    as
    1. J. -R. Souquet & M. J. Woolley & J. Gabelli & P. Simon & A. A. Clerk, 2014. "Photon-assisted tunnelling with nonclassical light," Nature Communications, Nature, vol. 5(1), pages 1-9, December.
    2. Julio T. Barreiro & Markus Müller & Philipp Schindler & Daniel Nigg & Thomas Monz & Michael Chwalla & Markus Hennrich & Christian F. Roos & Peter Zoller & Rainer Blatt, 2011. "An open-system quantum simulator with trapped ions," Nature, Nature, vol. 470(7335), pages 486-491, February.
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