High-Probability Quantum State Transfer in the Alternating Open Chains of 1/2 Spins with XY Hamiltonian

TL;DR

This paper investigates high-probability quantum state transfer in alternating open chains of spin-1/2 particles with XY Hamiltonian, highlighting the advantage of chains with even numbers of spins for effective transfer.

Contribution

It demonstrates that high-probability quantum state transfer is achievable in even-length chains, revealing a key difference from odd-length chains.

Findings

High-probability transfer in even N chains (4,6,8)

Even N chains outperform odd N chains in transfer probability

Transfer probability depends on chain length and parity

Abstract

This paper concerns the problem of non-ideal state transfer along the alternating open chain of spins $s=1/2$ with XY Hamiltonian. It is found that the state transfer along the chain with even number of spins $N$ ($N=4,6,8$) may be realized with high probability. Privilege of even $N$ in comparison with odd $N$ is demonstrated.