Use of dynamical coupling for improved quantum state transfer

Abstract

We propose a method to improve quantum state transfer in transmission lines. The idea is to localize the information on the last qubit of a transmission line, by dynamically varying the coupling constants between the first and the last pair of qubits. The fidelity of state transfer is higher then in a chain with fixed coupling constants. The effect is stable against small fluctuations in the system parameters.

5 pages, 7 figures

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Cited by in corpus (24)

• Quantum Communication through Spin Chain Dynamics: an Introductory Overview
• A Review of Perfect State Transfer and its Application as a Constructive Tool
• Optimal quantum chain communication by end gates
• Local quantum control of Heisenberg spin chains
• Fast, high fidelity information transmission through spin chain quantum wires
• Local control of entanglement in a spin chain
• Quantum state transfer and time-dependent disorder in Quantum Chains
• Adiabatic Quantum Transport in a Spin Chain with a Moving Potential
• Entanglement Resonance in Driven Spin Chains
• Transport of Quantum Correlations across a spin chain
• Arbitrary entangled state transfer via a topological qubit chain
• Controlling qubit arrays with anisotropic XXZ Heisenberg interaction by acting on a single qubit
• Spin Star as Switch for Quantum Networks
• Simulation of Time-dependent Heisenberg Models in 1D
• Quantum state transfer via temporal kicking of information
• Quantum communication via a continuously monitored dual spin chain
• Robust quantum state transfer between two superconducting qubits via partial measurement
• Role of interference in quantum state transfer through spin chains
• Robustness of spin-chain state-transfer schemes
• Entanglement Transfer via XXZ Heisenberg chain with DM Interaction
• Long-distance Entanglement generation by Local Rotational Protocols in spin chains
• Diffusive lossless energy and coherence transfer by noisy coupling
• Perfect transfer of arbitrary continuous variable states across optical waveguide lattices
• Measurement enhances long-distance Entanglement generation in spin chains with dissipative processes