301 citations · 1.1k across the 36 of their papers we have counts for
38 papers
Solid-state reaction synthesis of superconducting refractory-metal germanides for Ge/SiGe quantum devices
Sebastiaan R. Roelofs, Jan Cornelis Wolff, Nick van Loo +3
Solid-phase reactions offer a route to integrate superconductors into Ge/SiGe heterostructures, but forming high-quality superconducting layers near the buried Ge quantum well rema…
Understanding the superconducting proximity effect in semiconductors through quantum oscillations
Milo Coombs, Teun A. J. van Schijndel, Yu Wu +5
Superconductor-semiconductor hybrids host emergent states of matter and offer a platform for new qubits, but the superconducting metal shunts electrical transport, which rules out…
Single-shot parity readout of a minimal Kitaev chain
Nick van Loo, Francesco Zatelli, Gorm O. Steffensen +12
Protecting qubits from noise is essential for building reliable quantum computers. Topological qubits offer a route to this goal by encoding quantum information non-locally, using…
Probing Majorana localization of a phase-controlled three-site Kitaev chain with an additional quantum dot
Alberto Bordin, Florian J. Bennebroek Evertsz', Bart Roovers +11
Few-site implementations of the Kitaev chain offer a minimal platform to study the emergence and stability of Majorana bound states. Here, we realize two- and three-site chains in…
Scaling up a sign-ordered Kitaev chain without magnetic flux control
Chun-Xiao Liu, Sebastian Miles, Alberto Bordin +4
Quantum dot-superconductor arrays have emerged as a new and promising material platform for realizing topological Kitaev chains. So far, experiments have implemented a two-site cha…
Cross-Platform Autonomous Control of Minimal Kitaev Chains
David van Driel, Rouven Koch, Vincent P. M. Sietses +21
Contemporary quantum devices are reaching new limits in size and complexity, allowing for the experimental exploration of emergent quantum modes. However, this increased complexity…
Realisation of de Gennes Absolute Superconducting Switch with a Heavy Metal Interface
Hisakazu Matsuki, Alberto Hijano, Grzegorz P. Mazur +13
In 1966, Pierre-Gilles de Gennes proposed a non-volatile mechanism for switching superconductivity on and off in a magnetic device. This involved a superconductor (S) sandwiched be…
Signatures of Majorana protection in a three-site Kitaev chain
Alberto Bordin, Chun-Xiao Liu, Tom Dvir +14
Majorana zero modes (MZMs) are non-Abelian excitations predicted to emerge at the edges of topological superconductors. One proposal for realizing a topological superconductor in o…
Supercurrent through an Andreev trimer
Alberto Bordin, Florian J. Bennebroek Evertsz', Gorm O. Steffensen +8
Detection and control of Andreev Bound States (ABSs) localized at semiconductor-superconductor interfaces are essential for their use in quantum applications. Here we investigate t…
Robust poor man's Majorana zero modes using Yu-Shiba-Rusinov states
Francesco Zatelli, David van Driel, Di Xu +14
The recent realization of a two-site Kitaev chain featuring "poor man's Majorana" states demonstrates a path forward in the field of topological superconductivity. Harnessing the p…
Charge sensing the parity of an Andreev molecule
David van Driel, Bart Roovers, Francesco Zatelli +10
The proximity effect of superconductivity on confined states in semiconductors gives rise to various bound states such as Andreev bound states (ABSs), Andreev molecules and Majoran…
Supercurrent in the presence of direct transmission and a resonant localized state
Vukan Levajac, Hristo Barakov, Grzegorz P. Mazur +4
We study the current-phase relation (CPR) of an InSb-Al nanowire Josephson junction in parallel magnetic fields up to \,mT. At high magnetic fields and in narrow voltage inter…
Subgap spectroscopy along hybrid nanowires by nm-thick tunnel barriers
Vukan Levajac, Ji-Yin Wang, Grzegorz P. Mazur +8
Tunneling spectroscopy is widely used to examine the subgap spectra in semiconductor-superconductor nanostructures when searching for Majorana zero modes (MZMs). Typically, semicon…
Spin-filtered measurements of Andreev bound states
David van Driel, Guanzhong Wang, Alberto Bordin +9
A semiconductor nanowire brought in proximity to a superconductor can form discrete, particle-hole symmetric states, known as Andreev bound states (ABSs). An ABS can be found in it…
Controlled crossed Andreev reflection and elastic co-tunneling mediated by Andreev bound states
Alberto Bordin, Guanzhong Wang, Chun-Xiao Liu +12
A short superconducting segment can couple attached quantum dots via elastic co-tunneling (ECT) and crossed Andreev reflection (CAR). Such coupled quantum dots can host Majorana bo…
The gate-tunable Josephson diode
G. P. Mazur, N. van Loo, D. van Driel +5
Superconducting diodes are a recently-discovered quantum analogueue of classical diodes. The superconducting diode effect relies on the breaking of both time-reversal and inversion…
Impact of junction length on supercurrent resilience against magnetic field in InSb-Al nanowire Josephson junctions
Vukan Levajac, Grzegorz P. Mazur, Nick van Loo +7
Semiconducting nanowire Josephson junctions represent an attractive platform to investigate the anomalous Josephson effect and detect topological superconductivity by studying Jose…
Electrostatic control of the proximity effect in the bulk of semiconductor-superconductor hybrids
N. van Loo, G. P. Mazur, T. Dvir +11
The proximity effect in semiconductor-superconductor nanowires is expected to generate an induced gap in the semiconductor. The magnitude of this induced gap, together with the sem…
Realization of a minimal Kitaev chain in coupled quantum dots
Tom Dvir, Guanzhong Wang, Nick van Loo +14
Majorana bound states constitute one of the simplest examples of emergent non-Abelian excitations in condensed matter physics. A toy model proposed by Kitaev shows that such states…
Singlet and triplet Cooper pair splitting in hybrid superconducting nanowires
Guanzhong Wang, Tom Dvir, Grzegorz P. Mazur +9
In most naturally occurring superconductors, electrons with opposite spins are paired up to form Cooper pairs. This includes both conventional -wave superconductors such as alum…
Parametric exploration of zero-energy modes in three-terminal InSb-Al nanowire devices
Ji-Yin Wang, Nick van Loo, Grzegorz P. Mazur +10
We systematically study three-terminal InSb-Al nanowire devices by using radio-frequency reflectometry. Tunneling spectroscopy measurements on both ends of the hybrid nanowires are…
Spin-mixing enhanced proximity effect in aluminum-based superconductor-semiconductor hybrids
G. P. Mazur, N. van Loo, J. Y. Wang +13
In superconducting quantum circuits, aluminum is one of the most widely used materials. It is currently also the superconductor of choice for the development of topological qubits.…
Nonlocal measurement of quasiparticle charge and energy relaxation in proximitized semiconductor nanowires using quantum dots
Guanzhong Wang, Tom Dvir, Nick van Loo +6
The lowest-energy excitations of superconductors do not carry an electric charge, as their wave function is equally electron-like and hole-like. This fundamental property is not ea…
Topological valley currents via ballistic edge modes in graphene superlattices near the primary Dirac point
Yang Li, Mario Amado, Timo Hyart +2
Graphene on hexagonal boron nitride (hBN) can exhibit a topological phase via mutual crystallographic alignment. Recent measurements of nonlocal resistance () near the seco…