77 citations · 359 across the 15 of their papers we have counts for
16 papers · 1 filter
Probing proximity-induced superconductivity in bilayer graphene using gate-defined quantum dots
Philipp Schmidt, Mathies Funke, Till Tenger +8
Van der Waals heterostructures offer a direct way of combining two-dimensional (2D) materials with different electronic properties, such as 2D semiconductors, metals, and supercond…
Probing charge noise in bilayer graphene quantum dots by Landau-Zener-Stückelberg-Majorana spectroscopy
Katrin Hecker, Samuel Möller, Tobias Deußen +6
Charge noise is an important factor limiting qubit coherence and relaxation in solid-state devices. In bilayer graphene (BLG) quantum dots, recently established as a promising plat…
Radio-frequency charge detection on graphene electron-hole double quantum dots
Katrin Hecker, Samuel Möller, Hubert Dulisch +10
High-fidelity detection of charge transitions in quantum dots (QDs) is a key ingredient in solid state quantum computation. We demonstrate high-bandwidth radio-frequency charge det…
Weak localization as probe of spin-orbit-induced spin-split bands in bilayer graphene proximity coupled to WSe
E. Icking, F. Wörtche, A. W. Cummings +6
Proximity coupling of bilayer graphene (BLG) to transition metal dichalcogenides (TMDs) offers a promising route to engineer gate-tunable spin-orbit coupling (SOC) while preserving…
Electric field tunable spin-orbit gap in a bilayer graphene/WSe quantum dot
Hubert Dulisch, David Emmerich, Eike Icking +7
We report on the investigation of proximity-induced spin-orbit coupling (SOC) in a heterostructure of bilayer graphene (BLG) and tungsten diselenide (WSe). A BLG quantum dot (Q…
The role of antisymmetric orbitals and electron-electron interactions on the two-particle spin and valley blockade in graphene double quantum dots
Samuel Möller, Luca Banszerus, Katrin Hecker +5
We report on an experimental study of spin and valley blockade in two-electron bilayer graphene (BLG) double quantum dots (DQDs) and explore the limits set by asymmetric orbitals a…
Phonon-limited valley life times in single-particle bilayer graphene quantum dots
Luca Banszerus, Katrin Hecker, Lin Wang +6
The valley degree of freedom in 2D semiconductors, such as gapped bilayer graphene (BLG) and transition metal dichalcogenides, is a promising carrier of quantum information in the…
Particle-hole symmetry protects spin-valley blockade in graphene quantum dots
Luca Banszerus, Samuel Möller, Katrin Hecker +6
Particle-hole symmetry plays an important role for the characterization of topological phases in solid-state systems. It is found, for example, in free-fermion systems at half fill…
Probing two-electron multiplets in bilayer graphene quantum dots
Samuel Möller, Luca Banszerus, Angelika Knothe +10
We report on finite bias spectroscopy measurements of the two-electron spectrum in a gate defined bilayer graphene (BLG) quantum dot for varying magnetic fields. The spin and valle…
Spin-valley coupling in single-electron bilayer graphene quantum dots
Luca Banszerus, Samuel Möller, Corinne Steiner +7
Understanding how the electron spin is coupled to orbital degrees of freedom, such as a valley degree of freedom in solid-state systems is central to applications in spin-based ele…
Dispersive sensing of charge states in a bilayer graphene quantum dot
Luca Banszerus, Samuel Möller, Eike Icking +7
We demonstrate dispersive readout of individual charge states in a gate-defined few-electron quantum dot in bilayer graphene. We employ a radio frequency reflectometry circuit, whe…
Tunable interdot coupling in few-electron bilayer graphene double quantum dots
Luca Banszerus, Alexander Rothstein, Eike Icking +5
We present a highly controllable double quantum dot device based on bilayer graphene. Using a device architecture of interdigitated gate fingers, we can control the interdot tunnel…
Electron-hole crossover in gate-controlled bilayer graphene quantum dots
Luca Banszerus, Alexander Rothstein, Thomas Fabian +10
Electron and hole Bloch states in gapped bilayer graphene exhibit topological orbital magnetic moments with opposite signs near the band edges, which allows for tunable valley-pola…
Graphene-based charge sensors
C. Neumann, C. Volk, S. Engels +1
We discuss graphene nanoribbon-based charge sensors and focus on their functionality in the presence of external magnetic fields and high frequency pulses applied to a nearby gate…
Transport in coupled graphene-nanotube quantum devices
S. Engels, P. Weber, B. Terrés +6
We report on the fabrication and characterization of all-carbon hybrid quantum devices based on graphene and single-walled carbon nanotubes. We discuss both, carbon nanotube quantu…
Electronic Excited States in Bilayer Graphene Double Quantum Dots
Christian Volk, Stefan Fringes, Bernat Terrés +4
We report tunneling spectroscopy experiments on a bilayer graphene double quantum dot device that can be tuned by all-graphene lateral gates. The diameter of the two quantum dots a…