99%-fidelity ballistic quantum-state transfer through long uniform channels

Abstract

Quantum-state transfer with fidelity higher than 0.99 can be achieved in the ballistic regime of an arbitrarily long one-dimensional chain with uniform nearest-neighbor interaction, except for the two pairs of mirror symmetric extremal bonds, say x (first and last) and y (second and last-but-one). These have to be roughly tuned to suitable values x ~ 2 N^{-1/3} and y ~ 2^{3/4} N^{-1/6}, N being the chain length. The general framework can describe the end-to-end response in different models, such as fermion or boson hopping models and XX spin chains.

12 pages, 11 figures, 1 table

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Cited by in corpus (31)

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• NOON States via Quantum Walk of Bound Particles
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• High-dimensional quantum state transfer in a noisy network environment
• Transfer of 0-order coherence matrix along spin-1/2 chain
• Robust and efficient transport of two-qubit entanglement via disordered spin chains
• Breaking the Speed Limit for Perfect Quantum State Transfer
• Understanding the propagation of excitations in quantum spin chains with different kind of interactions
• Transfer arbitrary photon state along a cavity array without initialization
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• Newton's cradle analogue with Bose-Einstein condensates
• Ergotopy transport in a one dimensional spin chain
• Optimally controlled non-adiabatic quantum state transmission in the presence of quantum noise
• Noise reducing encoding strategies for spin chains
• M-neighbor approximation in one-qubit state transfer along zigzag and alternating spin-1/2 chains
• Fast and efficient long-distance quantum state transfer in long-range spin-$\frac{1}{2}$ models
• Quantum correlations between distant qubits conveyed by large-$S$ spin chains
• Incorporating Encoding into Quantum System Design
• Coherence restoring in communication line via controlled interaction with environment
• Creating two-qudit maximally entangled quantum link through bulk
• Teleportation via spin-1/2 chain in solid-state quantum architecture
• State transfer analysis for linear spin chains with non-uniform on-site energies
• Memory effects in repeated uses of quantum channels