94 citations · 475 across the 23 of their papers we have counts for
23 papers
Effects of the Spatial Extension of the Edge Channels on the Interference Pattern of a Helical Josephson Junction
Lucia Vigliotti, Alessio Calzona, Niccolò Traverso Ziani +3
Josephson junctions (JJs) in the presence of a magnetic field exhibit qualitatively different interference patterns depending on the spatial distribution of the supercurrent throug…
Anomalous periodicity and parafermion hybridization in superconducting qubits
Alessio Calzona, Matteo Carrega, Luca Chirolli
Topological quantum computation relies on a protected degenerate subspace enabling complicated operations in a noise-resilient way. To this end, hybrid platforms based on non-Abeli…
Multi-mode architectures for noise-resilient superconducting qubits
Alessio Calzona, Matteo Carrega
Great interest revolves around the development of new strategies to efficiently store and manipulate quantum information in a robust and decoherence-free fashion. Several proposals…
Quench-Probe Setup as Analyzer of Fractionalized Entanglement Spreading
Nicolas P. Bauer, Jan Carl Budich, Björn Trauzettel +1
We propose a novel spatially inhomogeneous setup for revealing quench-induced fractionalized excitations in entanglement dynamics. In this quench-probe setting, the region undergoi…
Optimization of Richardson extrapolation for quantum error mitigation
Michael Krebsbach, Björn Trauzettel, Alessio Calzona
Quantum error mitigation is a key concept for the development of practical applications based on current noisy intermediate scale quantum (NISQ) devices. One of the most promising…
Anomalous flux periodicity in proximitised quantum spin Hall constrictions
Lucia Vigliotti, Alessio Calzona, Björn Trauzettel +2
We theoretically analyse a long constriction between the helical edge states of a two-dimensional topological insulator. The constriction is laterally tunnel-coupled to two superco…
Spin-resolved spectroscopy of helical Andreev bound states
Alessio Calzona, Björn Trauzettel
We propose a versatile setup that allows performing spin-resolved spectroscopy of helical Andreev bound states, proving their existence and therefore the topological nature of the…
Rashba-controlled thermal valve in helical liquids
Alessio Calzona, Niccolò Traverso Ziani, Matteo Carrega +1
In the context of one-dimensional fermionic systems, helical Luttiger liquids are not only characterized by intriguing spin properties, but also by the possibility to be manipulate…
Holonomic implementation of CNOT gate on topological Majorana qubits
Alessio Calzona, Nicolas P. Bauer, Björn Trauzettel
The CNOT gate is a two-qubit gate which is essential for universal quantum computation. A well-established approach to implement it within Majorana-based qubits relies on subsequen…
Majorana-induced DC Shapiro steps in topological Josephson junctions
Sang-Jun Choi, Alessio Calzona, Björn Trauzettel
The demonstration of the non-Abelian properties of Majorana bound states (MBS) is a crucial step toward topological quantum computing. We theoretically investigate how Majorana fus…
All-electrically tunable networks of Majorana bound states
Song-Bo Zhang, Alessio Calzona, Björn Trauzettel
Second-order topological superconductors (SOTSs) host localized Majorana fermions and provide a new platform for topological quantum computation. We propose a remarkable and feasib…
Topological and holonomic quantum computation based on second-order topological superconductors
Song-Bo Zhang, W. B. Rui, Alessio Calzona +3
Majorana fermions feature non-Abelian exchange statistics and promise fascinating applications in topological quantum computation. Recently, second-order topological superconductor…
Moving Majorana bound states between distinct helical edges across a quantum point contact
Alessio Calzona, Björn Trauzettel
Majorana bound states are zero-energy excitations of topological superconductors which obey non-Abelian exchange statistics and are basic building blocks for topological quantum co…
Spectral properties of interacting helical channels driven by Lorentzian pulses
Matteo Acciai, Alessio Calzona, Matteo Carrega +2
Precise shaping of coherent electron sources allows the controlled creation of wavepackets into a one dimensional (1D) quantum conductor. Periodic trains of Lorentzian pulses have…
Parafermion braiding in fractional quantum Hall edge states with finite chemical potential
Solofo Groenendijk, Alessio Calzona, Hugo Tschirhart +2
Parafermions are non-Abelian anyons which generalize Majorana fermions and hold great promise for topological quantum computation. We study the braiding of parafe…
Z4 parafermions in one-dimensional fermionic lattices
Alessio Calzona, Tobias Meng, Maura Sassetti +1
Parafermions are emergent excitations which generalize Majorana fermions and are potentially relevant to topological quantum computation. Using the concept of Fock parafermions, we…
Universal scaling of quench-induced correlations in a one-dimensional channel at finite temperature
Alessio Calzona, Filippo Maria Gambetta, Matteo Carrega +3
It has been shown that a quantum quench of interactions in a one-dimensional fermion system at zero temperature induces a universal power law in its long-time dyna…
Quench-induced entanglement and relaxation dynamics in Luttinger liquids
Alessio Calzona, Filippo Maria Gambetta, Fabio Cavaliere +2
We investigate the time evolution towards the asymptotic steady state of a one dimensional interacting system after a quantum quench. We show that at finite time the latter induces…
Charge and energy fractionalization mechanism in one-dimensional channels
Matteo Acciai, Alessio Calzona, Giacomo Dolcetto +2
We study the problem of injecting single electrons into interacting one-dimensional quantum systems, a fundamental building block for electron quantum optics. It is well known that…
Non-equilibrium effects on charge and energy partitioning after an interaction quench
Alessio Calzona, Filippo Maria Gambetta, Matteo Carrega +2
Charge and energy fractionalization are among the most intriguing features of interacting onedimensional fermion systems. In this work we determine how these phenomena are modified…
Time-resolved energy dynamics after single electron injection into an interacting helical liquid
Alessio Calzona, Matteo Acciai, Matteo Carrega +2
The possibility to inject a single electron into ballistic conductors is at the basis of the new field of electron quantum optics. Here, we consider a single electron injection int…
Transient dynamics of spin-polarized injection in helical Luttinger liquids
Alessio Calzona, Matteo Carrega, Giacomo Dolcetto +1
We analyze the time evolution of spin-polarized electron wave packets injected into the edge states of a two-dimensional topological insulator. In the presence of electron interact…
Time-resolved pure spin fractionalization and spin-charge separation in helical Luttinger liquid based devices
Alessio Calzona, Matteo Carrega, Giacomo Dolcetto +1
Helical Luttinger liquids, appearing at the edge of two-dimensional topological insulators, represent a new paradigm of one-dimensional systems, where peculiar quantum phenomena ca…