Transfer of d-Level quantum states through spin chains by random swapping

Abstract

We generalize an already proposed protocol for quantum state transfer to spin chains of arbitrary spin. An arbitrary unknown $d-$ level state is transferred through a chain with rather good fidelity by the natural dynamics of the chain. We compare the performance of this protocol for various values of $d$. A by-product of our study is a much simpler method for picking up the state at the destination as compared with the one proposed previously. We also discuss entanglement distribution through such chains and show that the quality of entanglement transition increases with the number of levels $d$.

More discussion about the ground state has been added. Accepted in Physical Review A

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• Iterative quantum state transfer along a chain of nuclear spin qubits
• Dynamical quantum correlations after sudden quenches
• Variance squeezing and entanglement of the XX central spin model
• Spin Star as Switch for Quantum Networks
• Atomic quantum state transferring and swapping via quantum Zeno dynamics
• Quantum transfer of interacting qubits
• Transferring arbitrary d-dimensional quantum states of a superconducting qudit in circuit QED
• Turnplate of quantum state
• Optimal 1->M universal quantum cloning via spin networks
• High-dimensional quantum state transfer in a noisy network environment
• Transfer of 0-order coherence matrix along spin-1/2 chain
• Transfer arbitrary photon state along a cavity array without initialization
• State-Transfer Simulation in Integrated Waveguide Circuits
• Entanglement enhancement for two spins assisted by two phase kicks
• Integrated information storage and transfer with a coherent magnetic device
• Correlation transfer in large-spin chains
• M-neighbor approximation in one-qubit state transfer along zigzag and alternating spin-1/2 chains