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

Quantum Physics 2009-11-13 v3

Abstract

We generalize an already proposed protocol for quantum state transfer to spin chains of arbitrary spin. An arbitrary unknown dd- 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 dd. 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 dd.

Keywords

Cite

@article{arxiv.quant-ph/0612144,
  title  = {Transfer of d-Level quantum states through spin chains by random swapping},
  author = {Abolfazl Bayat and Vahid Karimipour},
  journal= {arXiv preprint arXiv:quant-ph/0612144},
  year   = {2009}
}

Comments

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