520 citations · 2.2k across the 23 of their papers we have counts for
23 papers
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…
Fusion protocol for Majorana modes in coupled quantum dots
Chun-Xiao Liu, Haining Pan, F. Setiawan +2
In a recent breakthrough experiment [Nature (London) 614, 445 (2023)], signatures of Majorana zero modes have been observed in tunnel spectroscopy for a minimal Kitaev chain constr…
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…
Tunable superconducting coupling of quantum dots via Andreev bound states in semiconductor-superconductor nanowires
Chun-Xiao Liu, Guanzhong Wang, Tom Dvir +1
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 medi…
Optimizing the topological properties of stacking semiconductor-ferromagnet-superconductor heterostructures
Chun-Xiao Liu, Michael Wimmer
We study the electronic properties of a planar semiconductor-superconductor heterostructure, in which a thin ferromagnetic insulator layer lies in between and acts as a spin filter…
Mechanisms of Andreev reflection in quantum Hall graphene
Antonio L. R. Manesco, Ian Matthias Flór, Chun-Xiao Liu +1
We simulate a hybrid superconductor-graphene device in the quantum Hall regime to identify the origin of downstream resistance oscillations in a recent experiment [Zhao et. al. Nat…
Quantized and unquantized zero-bias tunneling conductance peaks in Majorana nanowires: Conductance below and above
Haining Pan, Chun-Xiao Liu, Michael Wimmer +1
Majorana zero modes can appear at the wire ends of a 1D topological superconductor and manifest themselves as a quantized zero-bias conductance peak in the tunneling spectroscopy o…
Large zero-bias peaks in InSb-Al hybrid semiconductor-superconductor nanowire devices
Hao Zhang, Michiel W. A. de Moor, Jouri D. S. Bommer +19
We report electron transport studies on InSb-Al hybrid semiconductor-superconductor nanowire devices. Tunnelling spectroscopy is used to measure the evolution of subgap states whil…
Electronic properties of InAs/EuS/Al hybrid nanowires
Chun-Xiao Liu, Sergej Schuwalow, Yu Liu +4
We study the electronic properties of InAs/EuS/Al heterostructures as explored in a recent experiment [S. Vaitiekenas \emph{et al.}, Nat. Phys. (2020)], combining both spectroscopi…
Conductance asymmetries in mesoscopic superconducting devices due to finite bias
André Melo, Chun-Xiao Liu, Piotr Rożek +2
Tunneling conductance spectroscopy in normal metal-superconductor junctions is an important tool for probing Andreev bound states in mesoscopic superconducting devices, such as Maj…
Josephson current via an isolated Majorana zero mode
Chun-Xiao Liu, Bernard van Heck, Michael Wimmer
We study the equilibrium dc Josephson current in a junction between an -wave and a topological superconductor. Cooper pairs from the -wave superconducting lead can transfer t…
Protocol for reading out Majorana vortex qubit and testing non-Abelian statistics
Chun-Xiao Liu, Dong E. Liu, Fu-Chun Zhang +1
The successful test of non-Abelian statistics not only serves as a milestone in fundamental physics but also provides a quantum gate operation in topological quantum computation. A…
Conductance feature smearing and anisotropic suppression of induced superconductivity in a Majorana nanowire
Chun-Xiao Liu, Jay D. Sau, Tudor D. Stanescu +1
In a recent high-quality experimental work on normal metal--superconducting nanowire junctions arXiv:1807.01940 (2018), strong anisotropic suppression of induced superconductivity…
Metamorphosis of Andreev bound states into Majorana bound states in pristine nanowires
Yingyi Huang, Haining Pan, Chun-Xiao Liu +3
We show theoretically that in the generic finite chemical potential situation, the clean superconducting spin-orbit-coupled nanowire has two distinct nontopological regimes as a fu…
Distinguishing topological Majorana bound states from trivial Andreev bound states: Proposed tests through differential tunneling conductance spectroscopy
Chun-Xiao Liu, Jay D. Sau, S. Das Sarma
Trivial Andreev bound states arising from chemical potential variations could lead to zero-bias tunneling conductance peaks at finite magnetic fields in class nanowires, precis…
Proposal for measuring the parity anomaly in a topological superconductor ring
Chun-Xiao Liu, William S. Cole, Jay D. Sau
A topological superconductor ring is uniquely characterized by a switch in the ground state fermion number parity upon insertion of one superconducting flux quantum - a direct cons…
Quantized Majorana conductance
Hao Zhang, Chun-Xiao Liu, Sasa Gazibegovic +19
Majorana zero-modes hold great promise for topological quantum computing. Tunnelling spectroscopy in electrical transport is the primary tool to identify the presence of Majorana z…
Electron temperature and tunnel coupling dependence of zero-bias and almost-zero-bias conductance peaks in Majorana nanowires
F. Setiawan, Chun-Xiao Liu, Jay D. Sau +1
A one-dimensional semiconductor nanowire proximitized by a nearby superconductor may become a topological superconductor hosting localized Majorana zero modes at the two wire ends…
Phenomenology of soft gap, zero bias peak, and zero mode splitting in ideal Majorana nanowires
Chun-Xiao Liu, F. Setiawan, Jay D. Sau +1
We theoretically consider the observed soft gap in the proximity-induced superconducting state of semiconductor nanowires in the presence of spin-orbit coupling, Zeeman splitting,…
Andreev bound states versus Majorana bound states in quantum dot-nanowire-superconductor hybrid structures: Trivial versus topological zero-bias conductance peaks
Chun-Xiao Liu, Jay D. Sau, Tudor D. Stanescu +1
Motivated by an important recent experiment [Deng et al., Science 354, 1557 (2016)], we theoretically consider the interplay between Andreev bound states(ABSs) and Majorana bound s…
Role of dissipation in realistic Majorana nanowires
Chun-Xiao Liu, Jay D. Sau, S. Das Sarma
We carry out a realistic simulation of Majorana nanowires in order to understand the latest high- quality experimental data [H. Zhang et al., arXiv:1603.04069 (2016)] and, in the p…
Ferromagnetism and glassiness on the surface of topological insulators
Chun-Xiao Liu, Bitan Roy, Jay D. Sau
We investigate the nature of the ordering among magnetic adatoms, randomly deposited on the surface of topological insulators. Restricting ourselves to dilute impurity and weak cou…