Quantum state transfer in the presence of non homogeneous external potentials

Abstract

Heisenberg-type spin models in the limit of a low number of excitations are useful tools to study basic mechanisms in strongly correlated and magnetic systems. Many of these mechanisms can be experimentally tested using ultracold atoms. Here, we discuss the implementation of a quantum state transfer protocol in a tight-binding chain in the presence of an inhomogeneous external potential. We show that it can be used to extend the parameter range in which high fidelity state transfer can be achieved beyond the well established weak-coupling regime. Among the class of mirror-reflecting potentials that allow for high-fidelity quantum state transfer, the harmonic case is especially relevant because it allows us to formulate a proposal for the experimental implementation of the protocol in the context of optical lattices.

References in corpus (15)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Single-Atom Resolved Fluorescence Imaging of an Atomic Mott Insulator
• Single-Spin Addressing in an Atomic Mott Insulator
• Quantum dynamics of a single, mobile spin impurity
• The Propagation of Quantum Information Through a Spin System
• Long-distance entanglement and quantum teleportation in XX spin chains
• Qubit Teleportation and Transfer across Antiferromagnetic Spin Chains
• Non-Perturbative Entangling Gates between Distant Qubits using Uniform Cold Atom Chains
• 99%-fidelity ballistic quantum-state transfer through long uniform channels
• Quantum-state transfer via resonant tunnelling through local field induced barriers
• Routing quantum information in spin chains
• Transport of Quantum Correlations across a spin chain
• Diagonalization of quasi-uniform tridiagonal matrices
• Mesoscopic continuous and discrete channels for quantum information transfer
• Optimal electron propagation on a quantum chain by a topological phase

Cited by in corpus (12)

• Fast and robust quantum state transfer via a topological chain
• Transfer of arbitrary two qubit states via a spin chain
• Robust state transfer with high fidelity in spin-1/2 chains by Lyapunov control
• Quantum-state transfer in spin chains via isolated resonance of terminal spins
• Many-qubit quantum state transfer via spin chains
• High-dimensional quantum state transfer in a noisy network environment
• Decoherence and relaxation of topological states in extended quantum Ising models
• Transfer arbitrary photon state along a cavity array without initialization
• Entanglement dynamics and fractional quantum state transport in the spin-$\frac{1}{2}$ triangular plaquette
• Quasi-Perfect State Transfer in Spin Chains via Parametrization of On-Site Energies
• Coherent dynamics in a five-level atomic system
• State transfer analysis for linear spin chains with non-uniform on-site energies