Comparative analysis of robust entanglement generation in engineered XX spin chains
arXiv:2505.22484 · doi:10.3390/e27070764
Abstract
We present a numerical investigation comparing two entanglement generation protocols in finite XX spin chains with varying spin magnitudes (). Protocol 1 (P1) relies on staggered couplings to steer correlations toward the ends of the chain. At the same time, Protocol 2 (P2) adopts a dual-port architecture that uses optimized boundary fields to mediate virtual excitations between terminal spins. Our results show that P2 consistently outperforms P1 in all spin values, generating higher-fidelity entanglement in shorter timescales when evaluated under the same system parameters. Furthermore, P2 exhibits superior robustness under realistic imperfections, including diagonal and off-diagonal disorder, as well as dephasing noise. These advantages stem from its ability to suppress the bulk population and minimize susceptibility to decoherence. Together, the scalability, efficiency, and noise resilience of the dual-port approach position it as a promising framework for entanglement distribution in solid-state quantum information platforms.
20 pages, 9 figures, matches published version
References in corpus (66)
- Quantum Computing in the NISQ era and beyond
- Many-Body Physics with Ultracold Gases
- Separability Criterion for Density Matrices
- A computable measure of entanglement
- Quantum cryptography: Public key distribution and coin tossing
- Quantum sensing
- Separability of Mixed States: Necessary and Sufficient Conditions
- The nitrogen-vacancy colour centre in diamond
- Spins in few-electron quantum dots
- Quantum metrology
- QuTiP 2: A Python framework for the dynamics of open quantum systems
- Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
- Circuit Quantum Electrodynamics
- A Quantum Engineer's Guide to Superconducting Qubits
- Entanglement in a simple quantum phase transition
- Quantum Communication Through an Unmodulated Spin Chain
- Quantum Resource Theories
- Perfect state transfer in quantum spin networks
- Ultrastrong coupling regimes of light-matter interaction
- Quantum Non-Markovianity: Characterization, Quantification and Detection
- Programmable Quantum Simulations of Spin Systems with Trapped Ions
- The European Quantum Technologies Roadmap
- A short introduction to the Lindblad Master Equation
- Suppressing Charge Noise Decoherence in Superconducting Charge Qubits
- Quantum Communication through Spin Chain Dynamics: an Introductory Overview
- Non-Markovian Quantum State Diffusion
- Dissipative production of a maximally entangled steady state
- A quantum information processor with trapped ions
- Deterministic Quantum State Transfer and Generation of Remote Entanglement using Microwave Photons
- A Review of Perfect State Transfer and its Application as a Constructive Tool
- Modular Entanglement of Atomic Qubits using both Photons and Phonons
- Magnetic qubits as hardware for quantum computers
- Exact mapping between system-reservoir quantum models and semi-infinite discrete chains using orthogonal polynomials
- Deterministic quantum teleportation of photonic quantum bits by a hybrid technique
- Robust Quantum State Transfer in Random Unpolarized Spin Chains
- Qubit-oscillator dynamics in the dispersive regime: analytical theory beyond rotating-wave approximation
- Perfect State Transfer, Effective Gates and Entanglement Generation in Engineered Bosonic and Fermionic Networks
- Efficient simulation of finite-temperature open quantum systems
- Long-distance entanglement in spin systems
- Pure quantum dephasing of a solid state electron spin qubit in a large nuclear spin bath coupled by long-range hyperfine-mediated interactions
- Interacting two-level defects as sources of fluctuating high-frequency noise in superconducting circuits
- Long-distance entanglement and quantum teleportation in XX spin chains
- Electron wavepacket propagation and entanglement in a chain of coupled quantum dots
- Lower bounds on concurrence and separability conditions
- Quantum cellular automata quantum computing with endohedral fullerenes
- Routing quantum information in spin chains
- Robust Entanglement in Anti-ferromagnetic Heisenberg Chains by Single-spin Optimal Control
- Robust Quantum Entanglement Generation and Generation-plus-Storage Protocols with Spin Chains
- Topologically protected localised states in spin chains
- Experimental Realization of the Rabi-Hubbard Model with Trapped Ions
- Entanglement entropy of the random spin-1 Heisenberg chain
- Long-distance entanglement and quantum teleportation in coupled cavity arrays
- Peierls distorted chain as a quantum data bus for quantum state transfer
- Method for universal detection of two-photon polarization entanglement
- Master equations for effective Hamiltonians
- Quantum non-Markovianity: Overview and recent developments
- Phases and dynamics of ultracold bosons in a tilted optical lattice
- Quantum Fisher Information and multipartite entanglement in spin-1 chains
- Process Products Need Qualification
- Creation and manipulation of entanglement in spin chains far from equilibrium
- Steady many-body entanglements in dissipative systems
- Entanglement generation between distant parties via disordered spin chains
- Entanglement generation between distant spins via quasilocal reservoir engineering
- Effective Formalism for Open Quantum System Dynamics: Time-coarse-graining Approach
- Unitary Design of Quantum Spin Networks for Robust Routing, Entanglement Generation, and Phase Sensing
- Ballistic Entanglement Cloud after a Boundary Quench