95 citations · 577 across the 16 of their papers we have counts for
16 papers
Entropy spectroscopy of a bilayer graphene quantum dot
Christoph Adam, Hadrien Duprez, Natalie Lehmann +13
We measure the entropy change of charge transitions in an electrostatically defined quantum dot in bilayer graphene. Entropy provides insights into the equilibrium thermodynamic pr…
Dipole coupling of a bilayer graphene quantum dot to a high-impedance microwave resonator
Max J. Ruckriegel, Lisa M. Gächter, David Kealhofer +12
We implement circuit quantum electrodynamics (cQED) with quantum dots in bilayer graphene, a maturing material platform for semiconductor qubits that can host long-lived spin and v…
Spin-valley locked excited states spectroscopy in a one-particle bilayer graphene quantum dot
Hadrien Duprez, Solenn Cances, Andraz Omahen +12
Current semiconductor qubits rely either on the spin or on the charge degree of freedom to encode quantum information. By contrast, in bilayer graphene the valley degree of freedom…
Long distance electron-electron scattering detected with point contacts
Lev V. Ginzburg, Yuze Wu, Marc P. Röösli +15
We measure electron transport through point contacts in an electron gas in AlGaAs/GaAs heterostructures and graphene for a range of temperatures, magnetic fields and electron densi…
Pauli blockade catalogue and three- and four-particle Kondo effect in bilayer graphene quantum dots
Chuyao Tong, Annika Kurzmann, Rebekka Garreis +4
Pauli blockade is a fundamental quantum phenomenon that also serves as a powerful tool for qubit manipulation and read-out. While most systems exhibit a simple even-odd pattern of…
Long-lived valley states in bilayer graphene quantum dots
Rebekka Garreis, Chuyao Tong, Jocelyn Terle +8
Bilayer graphene is a promising platform for electrically controllable qubits in a two-dimensional material. Of particular interest is the ability to encode quantum information in…
Three-carrier spin blockade and coupling in bilayer graphene double quantum dots
Chuyao Tong, Florian Ginzel, Wei Wister Huang +8
The spin degree of freedom is crucial for the understanding of any condensed matter system. Knowledge of spin-mixing mechanisms is not only essential for successful control and man…
Counting Statistics of Single Electron Transport in Bilayer Graphene Quantum Dots
Rebekka Garreis, Jonas Daniel Gerber, Veronika Stará +8
We measure telegraph noise of current fluctuations in an electrostatically defined quantum dot in bilayer graphene by real-time detection of single electron tunneling with a capaci…
Automated reconstruction of bound states in bilayer graphene quantum dots
Jozef Bucko, Frank Schäfer, František Herman +5
Bilayer graphene is a nanomaterial that allows for well-defined, separated quantum states to be defined by electrostatic gating and, therefore, provides an attractive platform to c…
Single-shot readout in graphene quantum dots
Lisa Maria Gächter, Rebekka Garreis, Chuyao Tong +9
Electrostatically defined quantum dots in bilayer graphene offer a promising platform for spin qubits with presumably long coherence times due to low spin-orbit coupling and low nu…
Pauli Blockade of Tunable Two-Electron Spin and Valley States in Graphene Quantum Dots
Chuyao Tong, Annika Kurzmann, Rebekka Garreis +9
Pauli blockade mechanisms -- whereby carrier transport through quantum dots is blocked due to selection rules even when energetically allowed -- are a direct manifestation of the P…
Kondo effect and spin-orbit coupling in graphene quantum dots
Annika Kurzmann, Yaakov Kleeorin, Chuyao Tong +12
The Kondo effect is a cornerstone in the study of strongly correlated fermions. The coherent exchange coupling of conduction electrons to local magnetic moments gives rise to a Kon…
Shell Filling and Trigonal Warping in Graphene Quantum Dots
Rebekka Garreis, Angelika Knothe, Chuyao Tong +8
Transport measurements through a few-electron circular quantum dot in bilayer graphene display bunching of the conductance resonances in groups of four, eight and twelve. This is i…
Tunable valley splitting and bipolar operation in graphene quantum dots
Chuyao Tong, Rebekka Garreis, Angelika Knothe +8
Quantum states in graphene are four-fold degenerate: two fold in spins, and two fold in valleys.Both degrees of freedom can be utilized for qubit preparations. In our bilayer graph…
Gap Opening in Twisted Double Bilayer Graphene by Crystal fields
Peter Rickhaus, Giulia Zheng, Jose L. Lado +12
Crystal fields occur due to a potential difference between chemically different atomic species. In Van-der-Waals heterostructures such fields are naturally present perpendicular to…
Excited states in bilayer graphene quantum dots
A. Kurzmann, M. Eich, H. Overweg +11
We report on ground- and excited state transport through an electrostatically defined few-hole quantum dot in bilayer graphene in both parallel and perpendicular applied magnetic f…