[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 …

Superadiabatic quantum state transfer in spin chains

RR Agundez, CD Hill, LCL Hollenberg, S Rogge… - Physical Review A, 2017 - APS
In this paper we propose a superadiabatic protocol where quantum state transfer can be
achieved with arbitrarily high accuracy and minimal control across long spin chains with an …

Effect of emitters on quantum state transfer in coupled cavity arrays

E Baum, A Broman, T Clarke, NC Costa, J Mucciaccio… - Physical Review B, 2022 - APS
Over the last decade, conditions for perfect state transfer in quantum spin chains have been
discovered and their experimental realizations addressed, as have their extensions to more …

Combating the effects of disorder in quantum state transfer

C Keele, A Kay - Physical Review A, 2022 - APS
In this paper we examine disorder (ie, static imperfections in manufacture) for the fixed-
Hamiltonian evolution protocol of quantum state transfer. We improve the performance by …

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 …

Flat-band quantum communication induced by disorder

GMA Almeida, RF Dutra, AMC Souza, ML Lyra… - Physical Review A, 2023 - APS
We show that a qubit transfer protocol can be realized through a flat band hosted by a
disordered XX spin-1/2 diamond chain. In the absence of disorder, the transmission …

[HTML][HTML] Controlled quantum state transfer in XX spin chains at the Quantum Speed Limit

DSA Coden, SS Gomez, A Ferrón, O Osenda - Physics Letters A, 2021 - Elsevier
Abstract The Quantum Speed Limit (QSL) can be found in many different situations, in
particular in the propagation of information through quantum spin chains. In homogeneous …

[HTML][HTML] Complete structural restoring of transferred multi-qubit quantum state

EB Fel'dman, AN Pechen, AI Zenchuk - Physics Letters A, 2021 - Elsevier
In this work, we study optimal transfer of quantum states via spin chains. We develop the
protocol for structural restoring of multi-quantum coherence matrices of multi-qubit quantum …

[HTML][HTML] Nearest-neighbor approximation in one-excitation state evolution along spin-1/2 chain governed by XX-Hamiltonian

EB Fel'dman, AI Zenchuk - Physics Letters A, 2023 - Elsevier
The approximation of nearest neighbor interaction (NNI) is widely used in short-time spin
dynamics with dipole-dipole interactions (DDI) when the intensity of spin-spin interaction …

Exact solution of a family of staggered Heisenberg chains with conclusive pretty good quantum state transfer

P Serra, A Ferrón, O Osenda - Journal of Physics A: Mathematical …, 2022 - iopscience.iop.org
We construct the exact solution for a family of one-half spin chains explicitly. The spin chains
Hamiltonian corresponds to an isotropic Heisenberg Hamiltonian, with staggered exchange …