427 citations · 1.3k across the 24 of their papers we have counts for
24 papers
Impact of competing energy scales on the shell-filling sequence in elliptic bilayer graphene quantum dots
Samuel Möller, Luca Banszerus, Angelika Knothe +7
We report on a detailed investigation of the shell-filling sequence in electrostatically defined elliptic bilayer graphene quantum dots (QDs) in the regime of low charge carrier oc…
Coherent Charge Oscillations in a Bilayer Graphene Double Quantum Dot
Katrin Hecker, Luca Banszerus, Aaron Schäpers +7
The coherent dynamics of a quantum mechanical two-level system passing through an anti-crossing of two energy levels can give rise to Landau-Zener-Stückelberg-Majorana (LZSM) inter…
Transport spectroscopy of ultraclean tunable band gaps in bilayer graphene
E. Icking, L. Banszerus, F. Wörtche +11
The importance of controlling both the charge carrier density and the band gap of a semiconductor cannot be overstated, as it opens the doors to a wide range of applications, inclu…
Universal control of a six-qubit quantum processor in silicon
Stephan G. J. Philips, Mateusz T. Mądzik, Sergey V. Amitonov +12
Future quantum computers capable of solving relevant problems will require a large number of qubits that can be operated reliably. However, the requirements of having a large qubit…
Spin relaxation in a single-electron graphene quantum dot
L. Banszerus, K. Hecker, S. Möller +5
The relaxation time of a single-electron spin is an important parameter for solid-state spin qubits, as it directly limits the lifetime of the encoded information. Thanks to the lo…
Pulsed-gate spectroscopy of single-electron spin states in bilayer graphene quantum dots
Luca Banszerus, Katrin Hecker, Eike Icking +7
Graphene and bilayer graphene quantum dots are promising hosts for spin qubits with long coherence times. Although recent technological improvements make it possible to confine sin…
Electrostatic detection of Shubnikov-de-Haas oscillations in bilayer graphene by Coulomb resonances in gate-defined quantum dots
Luca Banszerus, Thomas Fabian, Samuel Möller +11
A gate-defined quantum dot in bilayer graphene is utilized as a sensitive electrometer for probing the charge density of its environment. Under the influence of a perpendicular mag…
Single-electron double quantum dots in bilayer graphene
Luca Banszerus, Samuel Möller, Eike Icking +4
We present transport measurements through an electrostatically defined bilayer graphene double quantum dot in the single electron regime. With the help of a back gate, two split ga…
Quantum Dot Arrays in Silicon and Germanium
W. I. L. Lawrie, H. G. J. Eenink, N. W. Hendrickx +15
Electrons and holes confined in quantum dots define an excellent building block for quantum emergence, simulation, and computation. In order for quantum electronics to become pract…
Insulating state in low-disorder graphene nanoribbons
A. Epping, C. Volk, F. Buckstegge +3
We report on quantum transport measurements on etched graphene nanoribbons encapsulated in hexagonal boron nitride (hBN). At zero magnetic field our devices behave qualitatively ve…
Fast charge sensing of Si/SiGe quantum dots via a high-frequency accumulation gate
Christian Volk, Anasua Chatterjee, Fabio Ansaloni +2
Quantum dot arrays are a versatile platform for the implementation of spin qubits, as high-bandwidth sensor dots can be integrated with single-, double- and triple-dot qubits yield…
Loading a quantum-dot based "Qubyte" register
C. Volk, A. M. J. Zwerver, U. Mukhopadhyay +8
Electrostatically defined quantum dot arrays offer a compelling platform for quantum computation and simulation. However, tuning up such arrays with existing techniques becomes imp…
Back action of graphene charge detectors on graphene and carbon nanotube quantum dots
C. Volk, S. Engels, C. Neumann +1
We report on devices based on graphene charge detectors (CDs) capacitively coupled to graphene and carbon nanotube quantum dots (QDs). We focus on back action effects of the CD on…
Correlations of mutual positions of charge density waves nodes in side-by-side placed InAs wires measured with scanning gate microscopy
A. A. Zhukov, Ch. Volk, A. Winden +2
We investigate the correlations of mutual positions of charge density waves nodes in side-by-side placed InAs nanowires in presence of a conductive atomic force microscope tip serv…
Investigations of local electronic transport in InAs nanowires by scanning gate microscopy at helium temperatures
A. A. Zhukov, Ch. Volk, A. Winden +2
In the current paper a set of experiments dedicated to investigations of local electronic transport in undoped InAs nanowires at helium temperatures in the presence of a charged at…
Reducing disorder in graphene nanoribbons by chemical edge modification
Jan Dauber, Bernat Terrés, Christian Volk +2
We present electronic transport measurements on etched graphene nanoribbons on silicon dioxide before and after a short hydrouoric acid (HF) treatment. We report on changes in the…
Etched graphene single electron transistors on hexagonal boron nitride in high magnetic fields
A. Epping, S. Engels, C. Volk +4
We report on the fabrication and electrical characterisation of etched graphene single electron transistors (SETs) of various sizes on hexagonal boron nitride (hBN) in high magneti…
The electronic transport of top subband and disordered sea in InAs nanowire in presence of a mobile gate
A. A. Zhukov, Ch. Volk, A. Winden +2
We performed measurements at helium temperatures of the electronic transport in an InAs quantum wire (\,k) in the presence of a charged tip of an atomic force…
Etched graphene quantum dots on hexagonal boron nitride
S. Engels, A. Epping, C. Volk +6
We report on the fabrication and characterization of etched graphene quantum dots (QDs) on hexagonal boron nitride (hBN) and SiO2 with different island diameters. We perform a stat…
Probing relaxation times in graphene quantum dots
Christian Volk, Christoph Neumann, Sebastian Kazarski +5
Graphene quantum dots are attractive candidates for solid-state quantum bits. In fact, the predicted weak spin-orbit and hyperfine interaction promise spin qubits with long coheren…
Charge detection in a bilayer graphene quantum dot
Stefan Fringes, Christian Volk, Caroline Norda +5
We show measurements on a bilayer graphene quantum dot with an integrated charge detector. The focus lies on enabling charge detection with a 30 nm wide bilayer graphene nanoribbon…
Tunable capacitive inter-dot coupling in a bilayer graphene double quantum dot
Stefan Fringes, Christian Volk, Bernat Terrés +4
We report on a double quantum dot which is formed in a width-modulated etched bilayer graphene nanoribbon. A number of lateral graphene gates enable us to tune the quantum dot ener…
Spin-orbit coupling and phase-coherence in InAs nanowires
S. Estévez Hernández, M. Akabori, K. Sladek +7
We investigated the magnetotransport of InAs nanowires grown by selective area metal-organic vapor phase epitaxy. In the temperature range between 0.5 and 30 K reproducible fluctua…
Disorder induced Coulomb gaps in graphene constrictions with different aspect ratios
B. Terrés, J. Dauber, C. Volk +3
We present electron transport measurements on lithographically defined and etched graphene nanoconstrictions with different aspect ratios including different lengths (L) and widths…