Pretty good state transfer in qubit chains—the Heisenberg Hamiltonian

L Banchi, G Coutinho, C Godsil… - Journal of Mathematical …, 2017 - pubs.aip.org
Pretty good state transfer in networks of qubits occurs when a continuous-time quantum walk
allows the transmission of a qubit state from one node of the network to another, with fidelity …

Robust quantum entanglement generation and generation-plus-storage protocols with spin chains

MP Estarellas, I D'Amico, TP Spiller - Physical Review A, 2017 - APS
Reliable quantum communication and/or processing links between modules are a
necessary building block for various quantum processing architectures. Here we consider a …

Singular dynamics and emergence of nonlocality in long-range quantum models

L Lepori, A Trombettoni, D Vodola - Journal of Statistical …, 2017 - iopscience.iop.org
We discuss how nonlocality originates in long-range quantum systems and how it affects
their dynamics at and out of equilibrium. We focus in particular on the Kitaev chains with …

[HTML][HTML] Almost perfect quantum state transfer on isotropic and anisotropic Heisenberg spin chains with tailored site dependent exchange couplings

P Serra, A Ferrón, O Osenda - Physics Letters A, 2022 - Elsevier
Spin chains with site dependent exchange coefficients can achieve near perfect quantum
state transfer for Hamiltonians with nearest neighbors XXZ type interactions without external …

Quantum transfer of interacting qubits

TJG Apollaro, S Lorenzo, F Plastina… - New Journal of …, 2022 - iopscience.iop.org
The transfer of quantum information between different locations is key to many quantum
information processing tasks. Whereas, the transfer of a single qubit state has been …

Perturbative many-body transfer

WJ Chetcuti, C Sanavio, S Lorenzo… - New Journal of …, 2020 - iopscience.iop.org
The transfer of excitations between different locations of a quantum many-body system is of
primary importance in many research areas, from transport properties in spintronics and …

Entangled states are harder to transfer than product states

TJG Apollaro, S Lorenzo, F Plastina, M Consiglio… - Entropy, 2022 - mdpi.com
The distribution of entangled states is a key task of utmost importance for many quantum
information processing protocols. A commonly adopted setup for distributing quantum states …

Spectra of perfect state transfer Hamiltonians on fractal-like graphs

G Mograby, M Derevyagin, GV Dunne… - Journal of Physics A …, 2021 - iopscience.iop.org
In this paper we study the spectral features, on fractal-like graphs, of Hamiltonians which
exhibit the special property of perfect quantum state transfer (PQST): the transmission of …

Spin chains for two-qubit teleportation

TJG Apollaro, GMA Almeida, S Lorenzo, A Ferraro… - Physical Review A, 2019 - APS
Generating high-quality multiparticle entanglement between communicating parties is the
primary resource in quantum teleportation protocols. To this aim, we show that the natural …

Dimensionality-enhanced quantum state transfer in long-range-interacting spin systems

S Hermes, TJG Apollaro, S Paganelli, T Macri - Physical Review A, 2020 - APS
In this work we study the single-qubit quantum state transfer in uniform long-range spin XXZ
systems in high-dimensional geometries. We consider prototypical long-range spin …