Theory of Majorana zero modes in unconventional superconductors

Y Tanaka, S Tamura, J Cayao - Progress of Theoretical and …, 2024‏ - academic.oup.com
Abstract Majorana fermions are spin-1/2 neutral particles that are their own antiparticles and
were initially predicted by Ettore Majorana in particle physics but their observation still …

Realization of a minimal Kitaev chain in coupled quantum dots

T Dvir, G Wang, N van Loo, CX Liu, GP Mazur, A Bordin… - Nature, 2023‏ - nature.com
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 …

Majorana qubits and non-abelian physics in quantum dot–based minimal Kitaev chains

A Tsintzis, RS Souto, K Flensberg, J Danon, M Leijnse - PRX quantum, 2024‏ - APS
The possibility of engineering artificial Kitaev chains in arrays of quantum dots coupled via
narrow superconducting regions has emerged as an attractive way to overcome the disorder …

Robust poor man's Majorana zero modes using Yu-Shiba-Rusinov states

F Zatelli, D van Driel, D Xu, G Wang, CX Liu… - Nature …, 2024‏ - nature.com
Kitaev chains in quantum dot-superconductor arrays are a promising platform for the
realization of topological superconductivity. As recently demonstrated, even a two-site chain …

A two-site Kitaev chain in a two-dimensional electron gas

SLD Ten Haaf, Q Wang, AM Bozkurt, CX Liu, I Kulesh… - Nature, 2024‏ - nature.com
Artificial Kitaev chains can be used to engineer Majorana bound states (MBSs) in
superconductor–semiconductor hybrids,,–. In this work, we realize a two-site Kitaev chain in …

Parity-conserving Cooper-pair transport and ideal superconducting diode in planar germanium

M Valentini, O Sagi, L Baghumyan, T de Gijsel… - Nature …, 2024‏ - nature.com
Superconductor/semiconductor hybrid devices have attracted increasing interest in the past
years. Superconducting electronics aims to complement semiconductor technology, while …

Tunable crossed Andreev reflection and elastic cotunneling in hybrid nanowires

A Bordin, G Wang, CX Liu, SLD Ten Haaf, N Van Loo… - Physical Review X, 2023‏ - APS
A short superconducting segment can couple attached quantum dots via elastic cotunneling
(ECT) and crossed Andreev reflection (CAR). Such coupled quantum dots can host …

Crossed Andreev reflection and elastic cotunneling in three quantum dots coupled by superconductors

A Bordin, X Li, D Van Driel, JC Wolff, Q Wang… - Physical review …, 2024‏ - APS
The formation of a topological superconducting phase in a quantum-dot–based Kitaev chain
requires nearest neighbor crossed Andreev reflection and elastic cotunneling. Here, we …

Tunable superconducting coupling of quantum dots via Andreev bound states in semiconductor-superconductor nanowires

CX Liu, G Wang, T Dvir, M Wimmer - Physical review letters, 2022‏ - APS
Semiconductor quantum dots have proven to be a useful platform for quantum simulation in
the solid state. However, implementing a superconducting coupling between quantum dots …

Triplet correlations in Cooper pair splitters realized in a two-dimensional electron gas

Q Wang, SLD Ten Haaf, I Kulesh, D **ao… - Nature …, 2023‏ - nature.com
Cooper pairs occupy the ground state of superconductors and are typically composed of
maximally entangled electrons with opposite spin. In order to study the spin and …