Optimal dynamics for quantum-state and entanglement transfer through homogeneous quantum wires

Abstract

It is shown that effective quantum-state and entanglement transfer can be obtained by inducing a coherent dynamics in quantum wires with homogeneous intrawire interactions. This goal is accomplished by tuning the coupling between the wire endpoints and the two qubits there attached, to an optimal value. A general procedure to determine such value is devised, and scaling laws between the optimal coupling and the length of the wire are found. The procedure is implemented in the case of a wire consisting of a spin-1/2 XY chain: results for the time dependence of the quantities which characterize quantum-state and entanglement transfer are found of extremely good quality and almost independent of the wire length. The present approach does not require `ad hoc' engineering of the intrawire interactions nor a specific initial pulse shaping, and can be applied to a vast class of quantum channels.

5 pages, 5 figures

References in corpus (19)

• Entanglement of Formation of an Arbitrary State of Two Qubits
• Quantum Communication Through an Unmodulated Spin Chain
• Perfect Transfer of Arbitrary States in Quantum Spin Networks
• Quantum Communication through Spin Chain Dynamics: an Introductory Overview
• The Propagation of Quantum Information Through a Spin System
• Unmodulated spin chains as universal quantum wires
• Quantum phase transitions and quantum fidelity in free fermion graphs
• Perfect state transfer on a spin-chain without state initialization
• Qubit Teleportation and Transfer across Antiferromagnetic Spin Chains
• Perfect state transfer in long-range interacting spin chains
• Optimal state encoding for quantum walks and quantum communication over spin systems
• Information Transferring Ability of the Different Phases of a finite XXZ Spin Chain
• Local control of entanglement in a spin chain
• Engineering correlation and entanglement dynamics in spin systems
• The high probability state transfers and entanglements between different nodes of the homogeneous spin 1/2 chain in inhomogeneous external magnetic field
• High Fidelity State Transfer Over an Unmodulated Linear XY Spin Chain
• Optimal electron propagation on a quantum chain by a topological phase
• Dynamic generation of entangling wave packets in XY spin system with decaying long range couplings
• Engineering Long Range Distance Independent Entanglement through Kondo Impurities in Spin Chains

Cited by in corpus (77)

• Robust Quantum State Transfer in Random Unpolarized Spin Chains
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• Photonic Simulation of Entanglement Growth After a Spin Chain Quench
• Fast and robust quantum state transfer via a topological chain
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• Transfer of arbitrary two qubit states via a spin chain
• Optimized dynamical control of state transfer through noisy spin chains
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• Quantum Logic between Remote Quantum Registers
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• Arbitrary perfect state transfer in $d$-level spin chains
• Initializing an unmodulated spin chain to operate as a high quality quantum data-bus
• Quantum state transfer in a disordered one-dimensional lattice
• Robust state transfer with high fidelity in spin-1/2 chains by Lyapunov control
• Quantum state transfer in a XX chain with impurities
• Perfect State Transfer in Two and Three Dimensional Structures
• Disorder-assisted distribution of entanglement in $XY$ spin chains
• High-fidelity state transfer through long-range correlated disordered quantum channels
• Spectra of Perfect State Transfer Hamiltonians on Fractal-Like Graphs
• Many-qubit quantum state transfer via spin chains
• Dimensionality-enhanced quantum state transfer in long-range interacting spin systems
• Using the J1-J2 Quantum Spin Chain as an Adiabatic Quantum Data Bus
• Interplay between speed and fidelity in off-resonant quantum-state transfer protocols
• Measurement-Assisted Quantum Communication in Spin Channels with Dephasing
• Simulation of mirror inversion of quantum states in an XY spin chain using NMR
• Fast and robust magnon transport in a spin chain
• Controlled quantum state transfer in $XX$ spin chains at the Quantum Speed Limit
• Almost perfect transport of an entangled two-qubit state through a spin chain
• Ballistic quantum state transfer in spin chains: general theory for quasi-free models and arbitrary initial states
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• Optimal Quench for Distance-Independent Entanglement and Maximal Block Entropy
• Vibrational exciton-mediated quantum state transfert: a simple model
• Chiral quantum router with Rydberg atoms
• Analysis and minimization of bending losses in discrete quantum networks
• Combatting the Effects of Disorder in Quantum State Transfer
• Almost perfect transmission of multipartite entanglement through disordered and noisy spin chains
• Photon-assisted quantum state transfer and entanglement generation in spin chains
• High-dimensional quantum state transfer in a noisy network environment
• Robustness of spin-chain state-transfer schemes
• Evaluation of the performance of two state-transfer Hamiltonians in the presence of static disorder
• Optimized quantum state transfer through an XY spin chain
• Scalable universal holonomic quantum computation realized with an adiabatic quantum data bus and potential implementation using superconducting flux qubits
• Robust and efficient transport of two-qubit entanglement via disordered spin chains
• Understanding the propagation of excitations in quantum spin chains with different kind of interactions
• Partial structural restoring of two-qubit transferred state
• Localization properties and high-fidelity state transfer in electronic hopping models with correlated disorder
• Remote two-qubit state creation and its robustness
• Transferring entangled states through spin chains by boundary-state multiplets
• Quench Induced Growth of Distant Entanglement from Product and Locally Entangled States in Spin Chains
• General Quantum State Swap: an XY model analysis
• State-Transfer Simulation in Integrated Waveguide Circuits
• Flat-band quantum communication induced by disorder
• Entanglement transfer via Chiral Quantum Walk on a Triangular Chain
• Exact generation of quantum states by the dynamics of spin chains
• Robust and Fast Quantum State Transfer on Superconducting Circuits
• Duplex quantum communication through a spin chain
• Unitary Design of Quantum Spin Networks for Robust Routing, Entanglement Generation, and Phase Sensing
• Noise effects in perfect transmission of quantum states
• Quantum Corralling
• Spin dynamics in finite cyclic XY model
• High-fidelity state transfer via quantum walks from delocalized states
• Two-channel spin-chain communication line and simple quantum gates
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• Preparation of edge states by shaking boundaries
• Scalable Quantum Spin Networks from Unitary Construction
• Entanglement Transfer in a Composite Electron-Ion-Photon System
• State transfer analysis for linear spin chains with non-uniform on-site energies
• Exact solution of a family of staggered Heisenberg chains with conclusive pretty good quantum state transfer
• Incorporating Encoding into Quantum System Design
• Quantum teleportation by utilizing helical spin chains for sharing entanglement