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TT: Fachverband Tiefe Temperaturen

TT 58: Poster: Superconductivity II

TT 58.19: Poster

Thursday, March 30, 2023, 15:00–18:00, P2/OG3

Towards non-classical state preparation in photon-pressure circuits — •Mohamad Adnan El Kazouini, Janis Peter, Emily Guo, Kevin Uhl, and Daniel Bothner — Physikalisches Institut, Center for Quantum Sciences (CQ) and LISA+, Universität Tübingen, Germany

Photon-Pressure is a non-linear interaction between two electromagnetic modes in LC circuits, which gained considerable attention in the past years due to its unique possibilities to sense and control radio-frequency photons. To date, several milestone experiments have been performed such as interferometric radio-frequency thermometry, the observation of parametric strong-coupling, and the realization of resolved-sideband cooling of a low-frequency LC circuit (∼ 100 MHz) into its quantum ground state. Although photon-pressure is in principle providing the possibilities, non-classical states like quantum squeezed and entangled states of MHz photonic modes have not been realized yet in these systems. Those states, however, have the potential to enhance quantum-limited sensing of bosonic modes in the radio-frequency regime, an application of photon-pressure systems that have been discussed for instance in the context of the search for dark-matter axions. In our poster, we will present our progress in developing photon-pressure devices that are being engineered toward the preparation of non-classical radio-frequency photon states and we will discuss the next steps and our future plans.

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