WMI: Team

2025

Broadband electron paramagnetic resonance spectroscopy of ¹⁶⁷Er:⁷LiYF₄ at mK temperatures

Research Article | Physical Review B 111, 214430 (2025)

Preprint: arXiv:2501.04657

Ana Strinic, Patricia Oehrl, Achim Marx, Pavel A. Bushev, Hans Huebl, Rudolf Gross, Nadezhda Kukharchyk

Fabrication of low-loss Josephson parametric devices

Research Article | Physical Review B 111, 214508 (2025)

Preprint: arXiv:2412.11280

K. E. Honasoge, M. Handschuh, W. K. Yam, S. Gandorfer, D. Bazulin, N. Bruckmoser, L. Koch, A. Marx, R. Gross, K. G. Fedorov

Parity-dependent state transfer for direct entanglement generation

Research Article | Nature Communications 16, 2660 (2025)

Preprint: arXiv:2405.19408

F. A. Roy, J. H. Romeiro, L. Koch, I. Tsitsilin, J. Schirk, N. J. Glaser, N. Bruckmoser, M. Singh, F. X. Haslbeck, G. B. P. Huber, G. Krylov, A. Marx, F. Pfeiffer, C. M. F. Schneider, C. Schweizer, F. Wallner, D. Bunch, L. Richard, L. Södergren, K. Liegener, M. Werninghaus, S. Filipp

Two-dimensional Planck Spectroscopy for Microwave Photon Calibration

Research Article | Physical Review Applied 23, 024064 (2025)

Preprint: arXiv:2308.02389

S. Gandorfer, M. Renger, W. K. Yam, F. Fesquet, A. Marx, R. Gross, K. G. Fedorov

2024

Parametric multi-element coupling architecture for coherent and dissipative control of superconducting qubits

Research Article | arXiv:2403.02203

G. B. P. Huber, F. A. Roy, L. Koch, I. Tsitsilin, J. Schirk, N. J. Glaser, N. Bruckmoser, C. Schweizer, J. Romeiro, G. Krylov, M. Singh, F. X. Haslbeck, M. Knudsen, A. Marx, F. Pfeiffer, C. Schneider, F. Wallner, D. Bunch, L. Richard, L. Södergren, K. Liegener, M. Werninghaus, S. Filipp

Protected Fluxonium Control with Sub-harmonic Parametric Driving

Research Article | arXiv:2410.00495

J. Schirk, F. Wallner, L. Huang, I. Tsitsilin, N. Bruckmoser, L. Koch, D. Bunch, N. J. Glaser, G. B. P. Huber, M. Knudsen, G. Krylov, A. Marx, F. Pfeiffer, L. Richard, F. A. Roy, J. H. Romeiro, M. Singh, L. Södergren, E. Dionis, D. Sugny, M. Werninghaus, K. Liegener, C. M. F. Schneider, S. Filipp

Sensitivity-Adapted Closed-Loop Optimization for High-Fidelity Controlled-Z Gates in Superconducting Qubits

Research Article | arXiv:2412.17454

N. J. Glaser, F. A. Roy, I. Tsitsilin, L. Koch, N. Bruckmoser, J. Schirk, J. H. Romeiro, G. B. P. Huber, F. Wallner, M. Singh, G. Krylov, A. Marx, L. Södergren, C. M. F. Schneider, M. Werninghaus, S. Filipp

Demonstration of microwave single-shot quantum key distribution

Research Article | Nature Communications 15, 7544 (2024)

Preprint: arXiv:2311.11069

F.Fesquet, F.Kronowetter, M.Renger, W.K.Yam, S.Gandorfer, K.Inomata, Y.Nakamura, A.Marx, R.Gross, K.G.Fedorov

Efficient Decoupling of a Nonlinear Qubit Mode from Its Environment

Research Article | Physical Review X 14, 041007 (2024)

Preprint: arXiv:2312.16988

F. Pfeiffer, M. Werninghaus, C. Schweizer, N. Bruckmoser, L. Koch, N. J. Glaser, G. Huber, D. Bunch, F. X. Haslbeck, M. Knudsen, G. Krylov, K. Liegener, A. Marx, L. Richard, J. H. Romeiro, F. Roy, J. Schirk, C. Schneider, M. Singh, L. Södergren, I. Tsitsilin, F. Wallner, C. A. Riofrío, S. Filipp

Onset of transmon ionization in microwave single-photon detection

Research Article | Physical Review B 109, 174312 (2024)

Preprint: arXiv:2402.01884

Yuki Nojiri, Kedar E. Honasoge, Achim Marx, Kirill G. Fedorov, Rudolf Gross

2023

Festkörperphysik. Aufgaben und Lösungen (3rd revised and extended edition)

Book | Walther de Gruyter GmbH, Berlin/Boston , ISBN: 9783110782356 (hardcover), ISBN: 9783110782530 (eBook) (2023)

Rudolf Gross , Achim Marx , Dietrich Einzel, Stephan Geprägs

Perspectives of microwave quantum key distribution in open-air

Research Article | Physical Review A 108, 032607 (2023)

Preprint: arXiv:2203.05530

Florian Fesquet, Fabian Kronowetter, Michael Renger, Qiming Chen, Kedar Honasoge, Oscar Gargiulo, Yuki Nojiri, Achim Marx, Frank Deppe, Rudolf Gross, Kirill G. Fedorov

Quantum behavior of a superconducting Duffing oscillator at the dissipative phase transition

Research Article | Nature Communications 14, 2896 (2023)

Preprint: arXiv:2206.06338

Qi-Ming Chen, Michael Fischer, Yuki Nojiri, Michael Renger, Edwar Xie, Matti Partanen, Stefan Pogorzalek, Kirill G. Fedorov, Achim Marx, Frank Deppe, Rudolf Gross

Quantum microwave parametric interferometer

Research Article | Physical Review Applied 20, 024049 (2023)

Preprint: arXiv:2303.01026

F. Kronowetter, F. Fesquet, M. Renger, K. Honasoge, Y. Nojiri, K. Inomata, Y. Nakamura, A. Marx, R. Gross, K. G. Fedorov

Surface acoustic wave resonators on thin film piezoelectric substrates in the quantum regime

Research Article | Materials for Quantum Technology 3, 021001 (2023)

Preprint: arXiv:2301.11213

Thomas Luschmann, Alexander Jung, Stephan Geprägs, Franz X. Haslbeck, Achim Marx, Stefan Filipp, Simon Gröblacher, Rudolf Gross, Hans Huebl

2022

Festkörperphysik (4th revised and extended edition)

Book | Walther de Gruyter GmbH, Berlin/Boston , ISBN: 9783110782349 (hardcover), ISBN 9783110782394 (eBook) (2022)

Rudolf Gross, Achim Marx

Flow of quantum correlations in noisy two-mode squeezed microwave states

Research Article | Physical Review A 106, 052415 (2022)

Preprint: arXiv:2207.06090

M. Renger, S. Pogorzalek, F. Fesquet, K. Honasoge, F. Kronowetter, Q. Chen, Y. Nojiri, K. Inomata, Y. Nakamura, A. Marx, F. Deppe, R. Gross, K. G. Fedorov

Magnetic field robust high quality factor NbTiN superconducting microwave resonators

Research Article | Materials for Quantum Technology 2, 015002 (2022)

Preprint: arXiv:2112.08296

Manuel Müller, Thomas Luschmann, Andreas Faltermeier, Stefan Weichselbaumer, Leon Koch, Gerhard B. P. Huber, Hans Werner Schumacher, Niels Ubbelohde, David Reifert, Thomas Scheller, Frank Deppe, Achim Marx, Stefan Filipp, Matthias Althammer, Rudolf Gross, Hans Huebl

Mechanical frequency control in inductively coupled electromechanical systems

Research Article | Scientific Reports 12, 1608 (2022)

Preprint: arXiv:2104.10577

Thomas Luschmann, Philip Schmidt, Frank Deppe, Achim Marx, Alvaro Sanchez, Rudolf Gross, Hans Huebl

The scattering coefficients of superconducting microwave resonators. I. Transfer-matrix approach

Research Article | Physical Review B 106, 214505 (2022)

Preprint: arXiv:2109.07762

Qi-Ming Chen, Meike Pfeiffer, Matti Partanen, Florian Fesquet, Kedar E. Honasoge, Fabian Kronowetter, Yuki Nojiri, Michael Renger, Kirill G. Fedorov, Achim Marx, Frank Deppe, Rudolf Gross

The scattering coefficients of superconducting microwave resonators. II. System-bath approach

Research Article | Physical Review B 106, 214506 (2022)

Preprint: arXiv:2109.07766

Qi-Ming Chen, Matti Partanen, Florian Fesquet, Kedar E. Honasoge, Fabian Kronowetter, Yuki Nojiri, Michael Renger, Kirill G. Fedorov, Achim Marx, Frank Deppe, Rudolf Gross

Tuning and Amplifying the Interactions in Superconducting Quantum Circuits with Subradiant Qubits

Research Article | Physical Review A 105, 012405 (2022)

Preprint: arXiv:2107.01842

Qi-Ming Chen, Florian Fesquet, Kedar E. Honasoge, Fabian Kronowetter, Yuki Nojiri, Michael Renger, Kirill G. Fedorov, Achim Marx, Frank Deppe, Rudolf Gross

2021

Beyond the standard quantum limit of parametric amplification

Research Article | npj Quantum Information 7, 160 (2021)

Preprint: arXiv:2011.00914

M. Renger, S. Pogorzalek, Q. Chen, Y. Nojiri, K. Inomata, Y. Nakamura, M. Partanen, A. Marx, R. Gross, F. Deppe, K. G. Fedorov

Experimental quantum teleportation of propagating microwaves

Research Article | Science Advances 7, eabk0891 (2021)

Preprint: arXiv:2103.04155

K. G. Fedorov, M. Renger, S. Pogorzalek, R. Di Candia, Q. Chen, Y. Nojiri, K. Inomata, Y. Nakamura, M. Partanen, A. Marx, R. Gross, F. Deppe

In-situ tunable nonlinearity and competing signal paths in coupled superconducting resonators

Research Article | Physical Review B 103, 094515 (2021)

Preprint: arXiv:2009.13492

Michael Fischer, Qi-Ming Chen, Christian Besson, Peter Eder, Jan Goetz, Stefan Pogorzalek, Michael Renger, Edwar Xie, Michael J. Hartmann, Kirill G. Fedorov, Achim Marx, Frank Deppe, Rudolf Gross

Lokales Quantennetzwerk für Alice und Bob

Other | Akadmie Aktuell (ISSN 1436 -753X), Heft 2 (74), 36-38 (2021)

Frank Deppe, Kirill G. Fedorov, Achim Marx

RF Antenna Design for 3D Quantum Memories

Research Article | 2021 International Applied Computational Electromagnetics Society Symposium (ACES), IEEE Xplore , pp. 1-4 (2021)

F. Deppe, Edwar Xie, K.G. Fedorov, G. Andersson, J. Müller, A. Marx, R. Gross

2020

Sideband-resolved resonator electromechanics on the single-photon level based on a nonlinear Josephson inductance

Research Article | Communications Physics 3, 233 (2020)

Preprint: arXiv:1912.08731

Philip Schmidt, Mohammad T. Amawi, Stefan Pogorzalek, Frank Deppe, Achim Marx, Rudolf Gross, Hans Huebl

2019

Quantum Fourier Transform in Oscillating Modes

Research Article | arXiv:1912.09861

Qi-Ming Chen, Frank Deppe, Re-Bing Wu, Luyan Sun, Yu-xi Liu, Yuki Nojiri, Stefan Pogorzalek, Michael Renger, Matti Partanen, Kirill G. Fedorov, Achim Marx, Rudolf Gross

Secure quantum remote state preparation of squeezed microwave states

Research Article | Nature Communications 10, 2604 (2019)

S. Pogorzalek, K. G. Fedorov, M. Xu, A. Parra-Rodriguez, M. Sanz, M. Fischer, E. Xie, K. Inomata, Y. Nakamura, E. Solano, A. Marx, F. Deppe, R. Gross

2018

Compact 3D quantum memory

Research Article | Applied Physics Letters 112, 202601 (2018)

Edwar Xie, Frank Deppe, Michael Renger, Daniel Repp, Peter Eder, Michael Fischer, Jan Goetz, Stefan Pogorzalek, Kirill G. Fedorov, Achim Marx, and Rudolf Gross

Festkörperphysik (3rd extended edition)

Book | Walter de Gruyter GmbH, Berlin/Boston , ISBN 978-3-11-055822-7 (hardcover), e-ISBN 978-3-11-055918-7 (pdf), e-ISBN 978-3-11-055928-6 (ebook) (2018)

Rudolf Gross, Achim Marx

Festkörperphysik: Aufgaben und Lösungen (2. Auflage)

Book | Walter de Gruyter GmbH, Berlin, ISBN 978-3-11-056611-6 (gebunden), ISBN 978-3-11-056635-2 (eBook) , Seiten: 327 (2018)

Rudolf Gross, Achim Marx, Dietrich Einzel, Stephan Geprägs

Finite-time quantum entanglement in propagating squeezed microwaves

Research Article | Scientific Reports 8, 6416 (2018)

Kirill G. Fedorov, S. Pogorzalek, U. Las Heras, M. Sanz, P. Yard, P. Eder, M. Fischer, J. Goetz, E. Xie, K. Inomata, Y. Nakamura, R. Di Candia, E. Solano, A. Marx, F. Deppe, R. Gross

Parity-engineered light-matter interaction

Research Article | Physical Review Letters 121, 060503 (2018)

Jan Goetz, Frank Deppe, Kirill G. Fedorov, Peter Eder, Michael Fischer, Stefan Pogorzalek, Edwar Xie, Achim Marx, Rudolf Gross

Quantum probe of an on-chip broadband interferometer for quantum microwave photonics

Research Article | Supercond. Sci. Technol. 31, 115002 (2018)

P. Eder, T. Ramos, J. Goetz, M. Fischer, S. Pogorzalek, J. Puertas Martínez, E.P. Menzel, F. Loacker, E. Xie, J.J. Garcia-Ripoll, K.G. Fedorov, A. Marx, F. Deppe, R. Gross

Ultrawide-range photon number calibration using a hybrid system combining nano-electromechanics and superconducting circuit quantum electrodynamics

Research Article | Appl. Phys. Lett. 113, 152601 (2018)

Philip Schmidt, Daniel Schwienbacher, Matthias Pernpeintner, Friedrich Wulschner, Frank Deppe, Achim Marx, Rudolf Gross, Hans Huebl

2017

Hysteretic Flux Response and Nondegenerate Gain of Flux-Driven Josephson Parametric Amplifiers

Research Article | Physical Review Applied 8, 024012 (2017)

Stefan Pogorzalek, Kirill G. Fedorov, Ling Zhong, Jan Goetz, Friedrich Wulschner, Michael Fischer, Peter Eder, Edwar Xie, Kunihiro Inomata, Tsuyoshi Yamamoto, Yasunobu Nakamura, Achim Marx, Frank Deppe, Rudolf Gross

Photon Statistics of Propagating Thermal Microwaves

Research Article | Physical Review Letters 118, 103602 (2017)

J. Goetz, S. Pogorzalek, F. Deppe, K. G. Fedorov, P. Eder, M. Fischer, F. Wulschner, E. Xie, A. Marx, R. Gross

Second-order decoherence mechanisms of a transmon qubit probed with thermal microwave states

Research Article | Quantum Sci. Technol. 2, 025002 (2017)

J. Goetz, F. Deppe, P. Eder, M. Fischer, M. Müting, J. P. Martínez, S. Pogorzalek, F. Wulschner, E. Xie, K. G. Fedorov, A. Marx, R. Gross

2016

Displacement of propagating squeezed microwave states

Research Article | Physical Review Letters 117, 020502 (2016)

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

Loss mechanisms in superconducting thin film microwave resonators

Research Article | Journal of Applied Physics 119, 015304 (2016)

J. Goetz, F. Deppe, M. Haeberlein, F. Wulschner, C. W. Zollitsch, S. Meier, M. Fischer, P. Eder, E. Xie, K. G. Fedorov, E. P. Menzel, A. Marx, and R. Gross

Tunable coupling of transmission-line microwave resonators mediated by an rf SQUID

Research Article | EPJ Quantum Technology 3, 10 (2016)

F. Wulschner, J. Goetz, F. R. Koessel, E. Hoffmann, A. Baust, P. Eder, M. Fischer, M. Haeberlein, M. J. Schwarz, M. Pernpeintner, E. Xie, L. Zhong, C. W. Zollitsch, B. Peropadre, J.-J. Garcia Ripoll, E. Solano, K. Fedorov, E. P. Menzel, F. Deppe, A. Marx, R. Gross

Ultrastrong coupling in two-resonator circuit QED

Research Article | Physical Review B 93, 214501 (2016)

A. Baust, E. Hoffmann, M. Haeberlein, M. J. Schwarz, P. Eder, J. Goetz, F. Wulschner, E. Xie, L. Zhong, F. Quijandria, D. Zueco, J.-J. Garcia Ripoll, L. Garcia-Alvarez, G. Romero, E. Solano, K. G. Fedorov, E. P. Menzel, F. Deppe, A. Marx, R. Gross

2015

Spin-boson model with an engineered reservoir in circuit quantum electrodynamics

Research Article | arXiv:1506.09114

Max Haeberlein, Frank Deppe, Andreas Kurcz, Jan Goetz, Alexander Baust, Peter Eder, Kirill Fedorov, Michael Fischer, Edwin P. Menzel, Manuel J. Schwarz, Friedrich Wulschner, Edwar Xie, Ling Zhong, Enrique Solano, Achim Marx, Juan-José García-Ripoll, Rudolf Gross

Quantum teleportation of propagating quantum microwaves

Research Article | EPJ Quantum Technology 2, 25 (2015)

R. Di Candia, K. G. Fedorov, L. Zhong, S. Felicetti, E. P. Menzel, M. Sanz, F. Deppe, A. Marx, R. Gross, E. Solano

Tunable and Switchable Coupling Between Two Superconducting Resonators

Research Article | Physical Review B 91, 014515 (2015)

A. Baust, E. Hoffmann, M. Haeberlein, M. J. Schwarz, P. Eder, E. P. Menzel, K. Fedorov, J. Goetz, F. Wulschner, E. Xie, L. Zhong, F. Quijandria, B. Peropadre, D. Zueco, J.-J. Garcia Ripoll, E. Solano, F. Deppe, A. Marx, R. Gross

2014

Dual-Path Methods for Propagating Quantum Microwaves

Research Article | New J. Phys. 16, 015001 (2014)

R. Di Candia, E. P. Menzel, L. Zhong, F. Deppe, A. Marx, R. Gross, E. Solano

Festkörperphysik (2nd revised edition)

Book | Walther de Gruyter GmbH, Berlin/Boston , ISBN 978-3-11-035869-8, e-ISBN 978-3-11-035870-4 (2014)

Rudolf Gross, Achim Marx

2013

Fast microwave beam splitters from superconducting resonators

Research Article | arXiv:1302.0729

M. Haeberlein, D. Zueco, P. Assum, T. Weißl, E. Hoffmann, B. Peropadre, J.J. Garc\ia-Ripoll, E. Solano, F. Deppe, A. Marx, R. Gross

Control of microwave signals using circuit nano-electromechanics

Research Article | Nature Physics 9, 179-184 (2013)

Xiaoqing Zhou, Fredrik Hocke, Albert Schliesser, Achim Marx, Hans Huebl, Rudolf Gross, Tobias J. Kippenberg

Festkörperphysik: Aufgaben und Lösungen

Book | ISBN 978-3-486-77134-3 , Oldenbourg Wissenschaftsverlag München (2013)

Rudolf Gross, Achim Marx, Dietrich Einzel

Gradiometric flux qubits with tunable gap

Research Article | New Journal of Physics 15, 045001 (2013)

M. J. Schwarz, J. Goetz, Z. Jiang, T. Niemczyk, F. Deppe, A. Marx, R. Gross

High Cooperativity in Coupled Microwave Resonator Ferrimagnetic Insulator Hybrids

Research Article | Physical Review Letters 111, 127003 (2013)

Hans Huebl, Christoph Zollitsch, Johannes Lotze, Fredrik Hocke, Moritz Greifenstein, Achim Marx, Rudolf Gross, Sebastian T. B. Goennenwein

Slowing, advancing and switching of microwave signals using circuit nanoelectromechanics

Research Article | Nature Physics 9, 179 (2013)

X. Zhou, F. Hocke, A. Schliesser, A. Marx, H. Huebl, R. Gross & T. J. Kippenberg

Squeezing with a flux-driven Josephson parametric amplifier

Research Article | New. J. Phys. 15, 125013 (2013)

L. Zhong, E. P. Menzel, R. Di Candia, P. Eder, M. Ihmig, A. Baust, M. Haeberlein, E. Hoffmann, K. Inomata, T. Yamamoto, Y. Nakamura, E. Solano, F. Deppe, A. Marx, R. Gross

Tunable coupling engineering between superconducting resonators: from sidebands to effective gauge fields

Research Article | Physical Review B 87, 134504 (2013)

B. Peropadre, D. Zueco, F. Wulschner, F. Deppe, A. Marx, R. Gross, J.J. García-Ripoll

2012

Festkörperphysik

Book | ISBN 978-486-71296-0, eISBN 978-486-71486-9 , Oldenburg Wissenschaftsverlag GmbH, München (2012)

Rudolf Gross, Achim Marx

Networks of nonlinear superconducting transmission line resonators

Research Article | New J. Phys. 14, 075024 (2012)

Martin Leib, Frank Deppe, Achim Marx, Rudolf Gross, Michael Hartmann

Path Entanglement of Continuous-Variable Quantum Microwaves

Research Article | Physical Review Letters 109, 250502 (2012)

E. P. Menzel, R. Di Candia, F. Deppe, P. Eder, L. Zhong, M. Ihmig, M. Haeberlein, A. Baust, E. Hoffmann, D. Ballester, K. Inomata, T. Yamamoto, Y. Nakamura, E. Solano, A. Marx, R. Gross

2011

Selection rules in a strongly coupled qubit-resonator system

Research Article | arXiv:1107.0810v1

T. Niemczyk, F. Deppe, E. P. Menzel, M. J. Schwarz, H. Huebl, F. Hocke, M. Häberlein, M. Danner, E. Hoffmann, A. Baust, E. Solano, J. J. Garcia-Ripoll, A. Marx, R. Gross

2010

A Superconducting 180° Hybrid Ring Coupler for circuit Quantum Electrodynamics

Research Article | Applied Physics Letters 97, 222508 (2010)

E. Hoffmann, F. Deppe, T. Niemczyk, T. Wirth, E. P. Menzel, G. Wild, H. Huebl, M. Mariantoni, T. Weißl, A. Lukashenko, A. P. Zhuravel, A. V. Ustinov, A. Marx, R. Gross

Circuit quantum electrodynamics in the ultrastrong-coupling regime

Research Article | Nature Physics 6, 772-776 (2010)

T. Niemczyk, F. Deppe, H. Huebl, E. P. Menzel, F. Hocke, M. J. Schwarz, J. J. Garcia-Ripoll, D. Zueco, T. Hümmer, E. Solano, A. Marx, R. Gross

Dual-Path State Reconstruction Scheme for Propagating Quantum Microwaves and Detector Noise Tomography

Research Article | Physical Review Letters 105, 100401 (2010)

E.P. Menzel, M. Mariantoni, F. Deppe, M.A. Araque Caballero, A. Baust, T. Niemczyk, E. Hoffmann, A. Marx, E. Solano, R. Gross

Josephson Coupling and Fiske Dynamics in Ferromagnetic Tunnel Junctions

Research Article | Eur. Phys. J. B 78, 509-523 (2010)

G. Wild, C. Probst, A. Marx, R. Gross

Planck Spectroscopy and the Quantum Noise of Microwave Beam Splitters

Research Article | Physical Review Letters 105, 133601 (2010)

M. Mariantoni, E. P. Menzel, F. Deppe, M. A. Araque Caballero, A. Baust, T. Niemczyk, E. Hoffmann, E. Solano, A. Marx, R. Gross

Two-resonator circuit QED: Dissipative Theory

Research Article | Physical Review B 81, 144510 (2010)

Georg M. Reuther, David Zueco, Frank Deppe, Elisabeth Hoffmann, Edwin P. Menzel, Thomas Weißl, Matteo Mariantoni, Sigmund Kohler, Achim Marx, Enrique Solano, Rudolf Gross, Peter Hänggi