Overview of project A01

Time-Resolved Non-Equilibrium Spectroscopy on Artificial Atoms and Molecules

Geller, Lorke

The mechanisms and principles that govern the relaxation from non-equilibrium to equilibrium are studied in a solid-state environment. Well-defined quantum states of few, interacting electrons in self-assembled quantum dots are prepared and their relaxation dynamics is studied by time-resolved high-resolution optical and transport spectroscopy. Starting with isolated quantum dots and their coupling to an electron reservoir, the measurements are extended to include more complex geometries such as “quantum dot molecules” and the manipulation of the excited states. This will give us a deeper understanding of the equilibration processes and the interactions involved.

Figure: Combined optical and transport spectroscopy reveals the charging dynamics with single dot resolution.



Marcel Zöllner, Hendrik Mannel, Fabio Rimek, Britta Maib, N. Schwarz, A.D. Wieck, A. Ludwig, Axel Lorke and Martin Paul Geller
The Interplay Between Electron Tunneling and Auger Emission in a Single Quantum Emitter Weakly Coupled to an Electron Reservoir
Appl. Phys. Lett. 124, 023102 (2024)
DOI: 10.1063/5.0183821



Jens Kerski, Hendrik Mannel, Pia Lochner, Eric Kleinherbers, Annika Kurzmann, Arne Ludwig, Andreas Wieck, Jürgen König, Axel Lorke and Martin Geller
Post-Processing of Real-Time Quantum Event Measurements for an Optimal Bandwidth
Sci. Rep. 13, 1105 (2023)
DOI: 10.1038/s41598-023-28273-0

F. Schaumburg, S. Sleziona, M. Zöllner, V. Dergianlis, M. Schleberger, M. Geller, A. Lorke and G. Prinz
Enhanced Intensity of Raman Signals from Hexagonal Boron Nitride Films
Appl. Phys. Lett. 123, 073101 (2023)
DOI: 10.1063/5.0159365

Eric Kleinherbers, Hendrik Mannel, Jens Kerski, Martin Paul Geller, Axel Lorke and Jürgen König
Unraveling Spin Dynamics from Charge Fluctuations
Phys. Rev. Research 5, 043103 (2023)
DOI: 10.1103/PhysRevResearch.5.043103

Markus Heckschen, Yasin Beyazit, Elaheh Shomali, Florian Kühne, Jesumony Jayabalan, Ping Zhou, Detlef Diesing, Markus E. Gruner, Rossitza Pentcheva, Axel Lorke, Björn Sothmann and Uwe Bovensiepen
Spatio-Temporal Electron Propagation Dynamics in Au/Fe/MgO(001) in Nonequilibrium: Revealing Single Scattering Events and the Ballistic Limit
PRX Energy 2, 043009 (2023)
DOI: 10.1103/PRXEnergy.2.043009

Hendrik Mannel, Jens Kerski, Pia Lochner (vorm. Eickelmann), Marcel Zöllner, A.D. Wieck, A. Ludwig, Axel Lorke and Martin Paul Geller
Auger and Spin Dynamics in a Self-Assembled Quantum Dot
J. Appl. Phys. 134, 154304 (2023)
DOI: 10.1063/5.0159775



Eric Kleinherbers, Philipp Stegmann, Annika Kurzmann, Martin Paul Geller, Axel Lorke and Jürgen König
Pushing the Limits in Real-Time Measurements of Quantum Dynamics
Phys. Rev. Lett. 128, 087701 (2022)
DOI: 10.1103/PhysRevLett.128.087701

Daming Zhou, Jens Kerski, Andreas Beckel, Martin Paul Geller, Axel Lorke, Arne Ludwig, Andreas D. Wieck, Xiaoshuang Chen and Wei Lu
The Role of Momentum Conservation on the Tunneling Between a Two-Dimensional Electron Gas and Self-Assembled Quantum Dots
J. Appl. Phys. 132, 064401 (2022)
DOI: 10.1063/5.0098561

Naser Ahmadiniaz, Martin Paul Geller, Jürgen König, Peter Kratzer, Axel Lorke, Gernot Schaller and R. Schützhold
Quantum Zeno Manipulation of Quantum Dots
Phys. Rev. Research 4, L032045 (2022)
DOI: 10.1103/PhysRevResearch.4.L032045



Jens Kerski, Pia Lochner, A. Ludwig, A.D. Wieck, Annika Kurzmann, Axel Lorke and Martin Paul Geller
Quantum Sensor for Nanoscale Defect Characterization
Phys. Rev. Appl. 15, 024029 (2021)
DOI: 10.1103/PhysRevApplied.15.024029

Pia Lochner, Jens Kerski, Annika Kurzmann, A. D. Wieck, A. Ludwig, Martin Paul Geller and Axel Lorke
Internal Photoeffect from a Single Quantum Emitter
Phys. Rev. B 103, 075426 (2021)
DOI: 10.1103/PhysRevB.103.075426

Axel Lorke
Boiling Eggs, Radiation Damage, and the Arrhenius Plot
Physics Today 74, 66 (2021)
DOI: 10.1063/PT.3.4757

Markus Sifft, Annika Kurzmann, Jens Kerski, Rüdiger Schott, Arne Ludwig, Andreas Dirk Wieck, Axel Lorke, Martin Paul Geller and Daniel Hägele
Quantum Polyspectra for Modeling and Evaluating Quantum Transport Measurements: A Unifying Approach to the Strong and Weak Measurement Regime
Phys. Rev. Research 3, 033123 (2021)
DOI: 10.1103/PhysRevResearch.3.033123

Dennis Oing, Marcel Ney, Georg Bendt, Stephan Schulz, Martin Paul Geller, Nicolas Wöhrl and Axel Lorke
A Monolithic, Back-Gated Diamond Field-Effect Transistor for Tunable Color Centers
Diamond and Related Materials 119, 108597 (2021)
DOI: 10.1016/j.diamond.2021.108597

Jiongyao Wu, Marcel Zöllner, Sebastian Esser, Vijaya Begum, Günther Prinz, Axel Lorke, Philipp Gegenwart and Rossitza Pentcheva
Electronic Reconstruction and Charge Transfer in Strained Sr2CoIrO6 Double Perovskite
Phys. Rev. B 104, 205126 (2021)
DOI: 10.1103/PhysRevB.104.205126



Pia Lochner, Annika Kurzmann, Jens Kerski, Philipp Stegmann, Jürgen König, Andreas D. Wieck, Arne Ludwig, Axel Lorke and Martin Paul Geller
Real-time Detection of Single Auger Recombination Events in a Self-Assembled Quantum Dot
Nano Lett. 20, 1631 (2020)
DOI: 10.1021/acs.nanolett.9b04650

Dennis Oing, Martin Paul Geller, Lucas Stahl, Jens Kerski, Axel Lorke and Nicolas Wöhrl
Defect Spectroscopy on the Dielectric Material Aluminum Oxide
Sci. Rep. 10, 12533 (2020)
DOI: 10.1038/s41598-020-69240-3



Amran Al-Ashouri, Annika Kurzmann, Benjamin Merkel, Arne Ludwig, Andreas D. Wieck, Axel Lorke and Martin Paul Geller
Photon Noise Suppression by a Built-in Feedback Loop
Nano Lett. 19, 135 (2019)
DOI: 10.1021/acs.nanolett.8b03486

Pia Lochner, Annika Kurzmann, Rüdiger Schott, Andreas D. Wieck, Arne Ludwig, Axel Lorke and Martin Paul Geller
Contrast of 83% in Reflection Measurements on a Single Quantum Dot
Sci. Rep. 9, 8817 (2019)
DOI: 10.1038/s41598-019-45259-z

Annika Kurzmann, Philipp Stegmann, Jens Kerski, R. Schott, A. Ludwig, A. D. Wieck, Jürgen König, Axel Lorke and Martin Geller
Optical Detection of Single-Electron Tunneling into a Semiconductor Quantum Dot
Phys. Rev. Lett. 122, 247403 (2019)
DOI: 10.1103/PhysRevLett.122.247403

Martin Paul Geller
Nonequilibrium Carrier Dynamics in Self-Assembled Quantum Dots
Appl. Phys. Rev. 6, 031306 (2019)
DOI: 10.1063/1.5091742



Malte F. Linder, Axel Lorke and Ralf Schützhold
Analog Sauter-Schwinger Effect in Semiconductors for Spacetime-Dependent Fields
Phys. Rev. B 97, 035203 (2018)
DOI: 10.1103/PhysRevB.97.035203



Jens Sonntag, Annika Kurzmann, Martin Paul Geller, Friedemann Queisser, Axel Lorke and Ralf Schützhold
Giant Magneto-Photoelectric Effect in Suspended Graphene
New J. Phys. 19, 063028 (2017)
DOI: 10.1088/1367-2630/aa739d

Kevin Eltrudis, Amran Al-Ashouri, Andreas Beckel, Arne Ludwig, Andreas Dirk Wieck, Martin Paul Geller and Axel Lorke
All-Electrical Measurement of the Triplet-Singlet Spin Relaxation Time in Self-Assembled Quantum Dots
Appl. Phys. Lett. 111, 092103 (2017)
DOI: 10.1063/1.4985572

Annika Kurzmann, Benjamin Merkel, Bastian Marquardt, Andreas Beckel, Arne Ludwig, Andreas D. Wieck, Axel Lorke and Martin Paul Geller
Electron Dynamics in Transport and Optical Measurements of Self-Assembled Quantum Dots
phys. stat. sol. (b) 254, 1600625 (2017)
DOI: 10.1002/pssb.201600625

Benjamin Merkel, Annika Kurzmann, Jan Hindrik Schulze, André Strittmatter, Martin Paul Geller and Axel Lorke
Charge-Driven Feedback Loop in the Resonance Fluorescence of a Single Quantum Dot
Phys. Rev. B 95, 115305 (2017)
DOI: 10.1103/PhysRevB.95.115305