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Inelastic Cooper pair tunneling in the strongly interacting regime

Jun 13, 2023, 10:25 AM
Institut Pascal

Institut Pascal

Rue André Rivière 91400 Orsay


Jérôme ESTEVE (Laboratoire de Physique des Solides)


Superconducting circuits have recently emerged as a new platform to explore the physics of open many body systems using microwave photons in strongly non-linear media. In this talk, we will present some experimental results that were obtained in Orsay and in Grenoble where photons confined in a waveguide interact strongly through an impurity, here a Josephson junction. The system may be driven by applying a dc voltage across the junction. At finite voltages, Cooper pairs tunnel and relax their energy by emitting photons in the waveguide. Such system may be modeled by a driven boundary Sine Gordon problem. We will present some preliminary theoretical results to initiate the discussion.

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