Quantum Sensing with Propagating Microwaves

We study sensing strategies based on the quantum properties of propagating microwave signals.
Team
Frank Deppe, Kirill Fedorov, Florian Fesquet, Oscar Gargiulo, Rudolf Gross, Kedar Honasoge, Fabian Kronowetter, Achim Marx, Yuki Nojiri
Recent projects
Munich Center for Quantum Science and Technology
Rudolf Gross, Stefan Filipp, Hans Huebl, Matthias Althammer, Kirill Fedorov, Florian Fesquet, Kedar Honasoge, Achim Marx, Nadezhda Kukharchyk, Stephan Geprägs, Thomas Luschmann
Recent publications
A Journey into Quantum Illumination
Fabian Kronowetter
PHD Thesis | Technical University of Munich  (2024)
Imperfect photon detection in quantum illumination
F. Kronowetter, M. Würth, W. Utschick, R. Gross, K. G. Fedorov
Research Article | Physical Review Applied 21, 014007  (2024)
Preprint: arXiv:2308.02343
Onset of transmon ionization in microwave single-photon detection
Yuki Nojiri, Kedar E. Honasoge, Achim Marx, Kirill G. Fedorov, Rudolf Gross
Research Article | Physical Review B 109, 174312  (2024)
Preprint: arXiv:2402.01884
Beyond the standard quantum limit of parametric amplification
M. Renger, S. Pogorzalek, Q. Chen, Y. Nojiri, K. Inomata, Y. Nakamura, M. Partanen, A. Marx, R. Gross, F. Deppe, K. G. Fedorov
Research Article | npj Quantum Information 7, 160  (2021)
Preprint: arXiv:2011.00914
Displacement of propagating squeezed microwave states
Kirill G. Fedorov, L. Zhong, S. Pogorzalek, P. Eder, M. Fischer, J. Goetz, E. Xie, F. Wulschner, K. Inomata, T. Yamamoto, Y. Nakamura, R. Di Candia, U. Las Heras, M. Sanz, E. Solano, E. P. Menzel, F. Deppe, A. Marx, R. Gross
Research Article | Physical Review Letters 117, 020502  (2016)

Quantum microwaves promise a fundamentally increased sensitivity over classical sensing protocols. As in most sensing applications, the quantum advantage is typically restricted to the low-energy regime with signal energies on the order of a single photon.