132 citations · 573 across the 19 of their papers we have counts for
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Dynamics of Majorana tetron qubits under quasiparticle poisoning
Sauri Bhattacharyya, Bernard van Heck
We study the dissipative dynamics of a Majorana tetron qubit in the presence of extrinsic quasiparticle poisoning due to the coupling to external leads. From the Bloch-Redfield equ…
Tunneling of fluxons via a Josephson resonant level
T. Vakhtel, P. D. Kurilovich, M. Pita-Vidal +3
Fluxons in a superconducting loop can be coherently coupled by quantum phase slips occurring at a weak link such as a Josephson junction. If Cooper pair tunneling at the junction o…
Quantum phase slips in a resonant Josephson junction
Tereza Vakhtel, Bernard van Heck
We investigate the consequences of resonant tunneling of Cooper pairs on the quantum phase slips occurring in a Josephson junction. The amplitude for quantum tunneling under the Jo…
Microwave spectroscopy of interacting Andreev spins
J. J. Wesdorp, F. J. Matute-Caňadas, A. Vaartjes +13
Andreev bound states are fermionic states localized in weak links between superconductors which can be occupied with spinful quasiparticles. Microwave experiments using superconduc…
Singlet-doublet transitions of a quantum dot Josephson junction detected in a transmon circuit
Arno Bargerbos, Marta Pita-Vidal, Rok Žitko +10
We realize a hybrid superconductor-semiconductor transmon device in which the Josephson effect is controlled by a gate-defined quantum dot in an InAs/Al nanowire. Microwave spectro…
Dynamical polarization of the fermion parity in a nanowire Josephson junction
J. J. Wesdorp, L. Grünhaupt, A. Vaartjes +6
Josephson junctions in InAs nanowires proximitized with an Al shell can host gate-tunable Andreev bound states. Depending on the bound state occupation, the fermion parity of the j…
Energy spectrum and current-phase relation of a nanowire Josephson junction close to the topological transition
Chaitanya Murthy, Vladislav D. Kurilovich, Pavel D. Kurilovich +3
A semiconducting nanowire proximitized by an -wave superconductor can be tuned into a topological state by an applied magnetic field. This quantum phase transition is marked by…
Zeeman and spin-orbit effects in the Andreev spectra of nanowire junctions
B. van Heck, J. I. Väyrynen, L. I. Glazman
We study the energy spectrum and the electromagnetic response of Andreev bound states in short Josephson junctions made of semiconducting nanowires. We focus on the joint effect of…
Microwave spectroscopy of spinful Andreev bound states in ballistic semiconductor Josephson junctions
David J. van Woerkom, Alex Proutski, Bernard van Heck +7
The superconducting proximity effect in semiconductor nanowires has recently enabled the study of new superconducting architectures, such as gate-tunable superconducting qubits and…
Topologically protected charge transfer along the edge of a chiral -wave superconductor
N. V. Gnezdilov, B. van Heck, M. Diez +2
The Majorana fermions propagating along the edge of a topological superconductor with pairing deliver a shot noise power of per eV of voltage b…
Minimal circuit for a flux-controlled Majorana qubit in a quantum spin-Hall insulator
B. van Heck, T. Hyart, C. W. J. Beenakker
We construct a minimal circuit, based on the top-transmon design, to rotate a qubit formed out of four Majorana zero-modes at the edge of a two-dimensional topological insulator. U…
Thermal conductance as a probe of the non-local order parameter for a topological superconductor with gauge fluctuations
B. van Heck, E. Cobanera, J. Ulrich +1
We investigate the effect of quantum phase slips on a helical quantum wire coupled to a superconductor by proximity. The effective low-energy description of the wire is that of a M…
Topological blockade and measurement of topological charge
B. van Heck, M. Burrello, A. Yacoby +1
The fractionally charged quasiparticles appearing in the 5/2 fractional quantum Hall plateau are predicted to have an extra non-local degree of freedom, known as topological charge…