Mpemba effects in open nonequilibrium quantum systems

A Nava, R Egger - Physical Review Letters, 2024 - APS
We generalize the classical thermal Mpemba effect (where an initially hot system relaxes
faster to the final equilibrium state than a cold one) to open quantum systems coupled to …

From perfect to imperfect poor man's Majoranas in minimal Kitaev chains

M Luethi, HF Legg, D Loss, J Klinovaja - Physical Review B, 2024 - APS
Poor man's Majoranas (PMMs) hold the promise to engineer Majorana bound states in a
highly tunable setup consisting of a chain of quantum dots that are connected via …

Machine-learned tuning of artificial Kitaev chains from tunneling spectroscopy measurements

J Benestad, A Tsintzis, RS Souto, M Leijnse… - Physical Review B, 2024 - APS
We demonstrate reliable machine-learned tuning of quantum-dot-based artificial Kitaev
chains to Majorana sweet spots, using the covariance matrix adaptation algorithm. We show …

Coupling of quantum-dot states via elastic cotunneling and crossed Andreev reflection in a minimal Kitaev chain

ZH Liu, C Zeng, HQ Xu - Physical Review B, 2024 - APS
We consider a quantum-dot (QD) based minimal Kitaev chain model and study the effects of
modulation of QD states on the elastic cotunneling (ECT) and crossed Andreev reflection …

Entanglement measures of Majorana bound states

VK Vimal, J Cayao - Physical Review B, 2024 - APS
Majorana bound states emerge in topological superconductors as zero-energy edge states
exhibiting spatial nonlocality. Despite the enormous advances, the detection of Majorana …

Majorana modes in quantum dots coupled via a floating superconducting island

RS Souto, VV Baran, M Nitsch, L Maffi, J Paaske… - arxiv preprint arxiv …, 2024 - arxiv.org
Majorana modes can be engineered in arrays where quantum dots (QDs) are coupled via
grounded superconductors, effectively realizing an artificial Kitaev chain. Minimal Kitaev …

Protocol for scaling up a sign-ordered Kitaev chain without magnetic flux control

CX Liu, S Miles, A Bordin, SLD ten Haaf… - arxiv preprint arxiv …, 2024 - arxiv.org
Quantum dot-superconductor arrays have emerged as a new and promising material
platform for realizing Kitaev chains with Majorana zero modes. So far, experiments have …

Spin-selective transport in a correlated double quantum dot-Majorana wire system

P Majek, I Weymann - Scientific Reports, 2024 - nature.com
In this work we investigate the spin-dependent transport through a double quantum dot
embedded in a ferromagnetic tunnel junction and side attached to a topological …

Edge and bulk states in a three-site Kitaev chain

SLD ten Haaf, Y Zhang, Q Wang, A Bordin… - arxiv preprint arxiv …, 2024 - arxiv.org
A chain of quantum dots (QDs) coupled via semiconductor-superconductor hybrid regions
can form an artificial Kitaev chain hosting Majorana bound states (MBSs). These zero …

Signatures of Majorana protection in a three-site Kitaev chain

A Bordin, CX Liu, T Dvir, F Zatelli, SLD ten Haaf… - arxiv preprint arxiv …, 2024 - arxiv.org
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 …