M. Spiecker

Martin Spiecker

Martin Spiecker

Current position
  • Since 01/2025 PostDoc at the Karlsruhe Institute of Technology (KIT), Institute for Photon Science (IPS) (Prof. Tilo Baumbach)

Previous position
  • 05/2024 – 12/2024 PostDoc at KIT, Physikalisches Institut (Prof. Ioan Pop)

Education
  • 06/2018 – 04/2024     PhD at KIT, Physikalisches Institut (Prof. Ioan Pop), „Two-level system hyperpolarization with a quantum szilard engine“
  • 04/2015 – 05/2018     Master’s degree in Physics at KIT, master thesis on fluxonium qubits fabricated with granular aluminum at the Physikalisches Institut (Dr. Ioan Pop),
  • 10/2011 – 03/2015     Bachelor’s degree at the Georg-August-Universität Göttingen, bachelor thesis on two-photon microscopy at the Third Institute of Physics - Biophysics (Prof. Jörg Enderlein),
  • 11/2010 – 08/2011     Civil service in Uganda, Africa,
  • 08/2008 – 06/2010     Friedrich-von-Bodelschwingh-Schule Bielefeld,
  • 08/2001 – 06/2008     Ratsgymnasium Bielefeld.

Field of research
  • classical and quamtum optics, quantum mechanics, superconducting quantum circuits, statistical physics and open quantum systems.

Completed projects
  • Discovery and investigation of long-lived two-level systems in superconducting quantum systems.
  • Two-photon superresolution microscopy based on image rescanning.

Publications


Thermalization of a flexible microwave stripline measured by a superconducting qubit
Paluch, P.; Spiecker, M.; Gosling, N.; Adam, V.; Kammhuber, J.; Vermeulen, K.; Bouman, D.; Wernsdorfer, W.; Pop, I. M.
2025. Applied Physics Letters, 126 (3), Art.-Nr.: 034003. doi:10.1063/5.0243116
Pure kinetic inductance coupling for cQED with flux qubits
Geisert, S.; Ihssen, S.; Winkel, P.; Spiecker, M.; Fechant, M.; Paluch, P.; Gosling, N.; Zapata, N.; Günzler, S.; Rieger, D.; Bénâtre, D.; Reisinger, T.; Wernsdorfer, W.; Pop, I. M.
2024. doi:10.48550/arXiv.2407.16342
Pure kinetic inductance coupling for cQED with flux qubits
Geisert, S.; Ihssen, S.; Winkel, P.; Spiecker, M.; Fechant, M.; Paluch, P.; Gosling, N.; Zapata, N.; Günzler, S.; Rieger, D.; Bénâtre, D.; Reisinger, T.; Wernsdorfer, W.; Pop, I. M.
2024. Applied Physics Letters, 125 (6), Art.-Nr.: 064002. doi:10.1063/5.0218361
Solomon equations for qubit and two-level systems: Insights into non-Poissonian quantum jumps
Spiecker, M.; Pavlov, A. I.; Shnirman, A.; Pop, I. M.
2024. Physical Review A, 109 (5), Article no: 052218. doi:10.1103/PhysRevA.109.052218
Two-level system hyperpolarization with a quantum Szilard engine. PhD dissertation
Spiecker, M.
2024, October 1. Karlsruher Institut für Technologie (KIT). doi:10.5445/IR/1000169661/v2
Dose-efficient in vivo X-ray phase contrast imaging at micrometer resolution by Bragg magnifiers
Spiecker, R.; Pfeiffer, P.; Biswal, A.; Shcherbinin, M.; Spiecker, M.; Hessdorfer, H.; Hurst, M.; Zharov, Y.; Bellucci, V.; Faragó, T.; Zuber, M.; Herz, A.; Cecilia, A.; Czyzycki, M.; Dias, C. S. B.; Novikov, D.; Krogmann, L.; Hamann, E.; van de Kamp, T.; Baumbach, T.
2023. Optica, 10 (12), 1633. doi:10.1364/OPTICA.500978
Fano Interference in Microwave Resonator Measurements
Rieger, D.; Günzler, S.; Spiecker, M.; Nambisan, A.; Wernsdorfer, W.; Pop, I. M.
2023. Physical Review Applied, 20 (1), Art.-Nr.: 014059. doi:10.1103/PhysRevApplied.20.014059
Two-level system hyperpolarization using a quantum Szilard engine
Spiecker, M.; Paluch, P.; Gosling, N.; Drucker, N.; Matityahu, S.; Gusenkova, D.; Günzler, S.; Rieger, D.; Takmakov, I.; Valenti, F.; Winkel, P.; Gebauer, R.; Sander, O.; Catelani, G.; Shnirman, A.; Ustinov, A. V.; Wernsdorfer, W.; Cohen, Y.; Pop, I. M.
2023. Nature Physics, 19, 1320–1325. doi:10.1038/s41567-023-02082-8
Granular aluminium nanojunction fluxonium qubit
Rieger, D.; Günzler, S.; Spiecker, M.; Paluch, P.; Winkel, P.; Hahn, L.; Hohmann, J. K.; Bacher, A.; Wernsdorfer, W.; Pop, I. M.
2022. Nature Materials, 22 (2), 194–199. doi:10.1038/s41563-022-01417-9
Flip chip implementation for generalized flux qubits
Geisert, S.; Ihssen, S.; Spiecker, M.; Paluch, P.; Rieger, D.; Günzler, S.; Seze, E. de; Wernsdorfer, W.; Winkel, P.; Pop, I. M.
2022, September. 85. DPG-Tagung der Sektion Kondensierte Materie (SKM 2022), Regensburg, Germany, September 4–9, 2022
Simultaneous quantum jumps on multiple Fluxonium qubits
Gosling, N.; Spiecker, M.; Paluch, P.; Geisert, S.; Pop, I.-M.
2022, September. 85. DPG-Tagung der Sektion Kondensierte Materie (SKM 2022), Regensburg, Germany, September 4–9, 2022
Fano interference in microwave resonator measurements
Günzler, S.; Rieger, D.; Spiecker, M.; Wernsdorfer, W.; Pop, I.
2022, September. 85. DPG-Tagung der Sektion Kondensierte Materie (SKM 2022), Regensburg, Germany, September 4–9, 2022
Operating in a deep underground facility improves the locking of gradiometric fluxonium qubits at the sweet spots
Gusenkova, D.; Valenti, F.; Spiecker, M.; Günzler, S.; Paluch, P.; Rieger, D.; Pioraş-Ţimbolmaş, L.-M.; Zârbo, L. P.; Casali, N.; Colantoni, I.; Cruciani, A.; Pirro, S.; Cardani, L.; Petrescu, A.; Wernsdorfer, W.; Winkel, P.; Pop, I. M.
2022. Applied Physics Letters, 120 (5), Art.-Nr.: 054001. doi:10.1063/5.0075909
Minimizing the Discrimination Time for Quantum States of an Artificial Atom
Takmakov, I.; Winkel, P.; Foroughi, F.; Planat, L.; Gusenkova, D.; Spiecker, M.; Rieger, D.; Grünhaupt, L.; Ustinov, A. V.; Wernsdorfer, W.; Pop, I. M.; Roch, N.
2021. Physical review applied, 15 (6), Art. Nr.: 064029. doi:10.1103/PhysRevApplied.15.064029
Quantum Nondemolition Dispersive Readout of a Superconducting Artificial Atom Using Large Photon Numbers
Gusenkova, D.; Spiecker, M.; Gebauer, R.; Willsch, M.; Willsch, D.; Valenti, F.; Karcher, N.; Grünhaupt, L.; Takmakov, I.; Winkel, P.; Rieger, D.; Ustinov, A. V.; Roch, N.; Wernsdorfer, W.; Michielsen, K.; Sander, O.; Pop, I. M.
2021. Physical review applied, 15 (6), Art. Nr.: 064030. doi:10.1103/PhysRevApplied.15.064030
Superconducting granular aluminum resonators resilient to magnetic fields up to 1 Tesla
Borisov, K.; Rieger, D.; Winkel, P.; Henriques, F.; Valenti, F.; Ionita, A.; Wessbecher, M.; Spiecker, M.; Gusenkova, D.; Pop, I. M.; Wernsdorfer, W.
2020. Applied physics letters, 117 (12), Art.-Nr.: 120502. doi:10.1063/5.0018012
Implementation of a Transmon Qubit Using Superconducting Granular Aluminum
Winkel, P.; Borisov, K.; Grünhaupt, L.; Rieger, D.; Spiecker, M.; Valenti, F.; Ustinov, A. V.; Wernsdorfer, W.; Pop, I. M.
2020. Physical review / X, 10 (3), Art.Nr. 031032. doi:10.1103/PhysRevX.10.031032
State preparation of a fluxonium qubit with feedback from a custom FPGA-based platform
Gebauer, R.; Karcher, N.; Gusenkova, D.; Spiecker, M.; Grünhaupt, L.; Takmakov, I.; Winkel, P.; Planat, L.; Roch, N.; Wernsdorfer, W.; Ustinov, A. V.; Weber, M.; Weides, M.; Pop, I. M.; Sander, O.
2020. 5th International Conference on Quantum Technologies (ICQT 2019), Article no: 020015, American Institute of Physics (AIP). doi:10.1063/5.0011721
Transmon qubit in a magnetic field: Evolution of coherence and transition frequency
Schneider, A.; Wolz, T.; Pfirrmann, M.; Spiecker, M.; Rotzinger, H.; Ustinov, A. V.; Weides, M.
2019. Physical review research, 1 (2), 023003. doi:10.1103/PhysRevResearch.1.023003
Granular aluminium as a superconducting material for high-impedance quantum circuits
Grünhaupt, L.; Spiecker, M.; Gusenkova, D.; Maleeva, N.; Skacel, S. T.; Takmakov, I.; Valenti, F.; Winkel, P.; Rotzinger, H.; Wernsdorfer, W.; Ustinov, A. V.; Pop, I. M.
2019. Nature materials, 18 (8), 816–819. doi:10.1038/s41563-019-0350-3
Investigation of hole-free phase plate performance in transmission electron microscopy under different operation conditions by experiments and simulations
Pretzsch, R.; Dries, M.; Hettler, S.; Spiecker, M.; Obermair, M.; Gerthsen, D.
2019. Advanced structural and chemical imaging, 5 (1), Art.Nr. 5. doi:10.1186/s40679-019-0067-z
Implementing an inductively shunted transmon qubit with tunable transverse and longitudinal coupling
Gusenkova, D.; Maleeva, N.; Skacel, S. T.; Spiecker, M.; Grünhaupt, L.; Richer, S.; DiVincenzo, D.; Pop, I. M.
2019. Physikertagung Münster 1984 : gemeinsam mit d. Frühjahrstagung Münster 1984 d. Arbeitskreises Festkörperphysik bei d. DPG (AKF 2019), Regensburg, Germany, March 31–April 5, 2019
Design of a granular aluminum fluxonium qubit with phonon traps
Ionita, A.; Spiecker, M.; Grünhaupt, L.; Gusenkova, D.; Pop, I.
2019. Physikertagung Münster 1984 : gemeinsam mit d. Frühjahrstagung Münster 1984 d. Arbeitskreises Festkörperphysik bei d. DPG (AKF 2019), Regensburg, Germany, March 31–April 5, 2019
Design and fabrication of a granular aluminum fluxonium qubit
Grünhaupt, L.; Spiecker, M.; Gusenkova, D.; Maleeva, N.; Skacel, S. T.; Takmakov, I.; Valenti, F.; Winkel, P.; Rotzinger, H.; Ustinov, A. V.; Pop, I. M.
2019. Physikertagung Münster 1984 : gemeinsam mit d. Frühjahrstagung Münster 1984 d. Arbeitskreises Festkörperphysik bei d. DPG (AKF 2019), Regensburg, Germany, March 31–April 5, 2019
Coherence of a granular aluminum fluxonium qubit
Spiecker, M.; Grünhaupt, L.; Gusenkova, D.; Maleeva, N.; Skacel, S. T.; Takmakov, I.; Valenti, F.; Winkel, P.; Rotzinger, H.; Ustinov, A. V.; Pop, I. M.
2019. Physikertagung Münster 1984 : gemeinsam mit d. Frühjahrstagung Münster 1984 d. Arbeitskreises Festkörperphysik bei d. DPG (AKF 2019), Regensburg, Germany, March 31–April 5, 2019
Fluxonium superconducting qubit using a granular aluminum superinductor
Spiecker, M.; Grünhaupt, L.; Maleeva, N.; Rotzinger, H.; Ustinov, A. V.; Pop, I. M.
2018. DPG-Frühjahrstagung der Sektion Kondensierte Materie gemeinsam mit der EPS (2018), Berlin, Germany, March 11–16, 2018