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Quantum state transfer in spin chains via shortcuts to adiabaticity

  • Bi Hua Huang
  • , Yi Hao Kang
  • , Ye Hong Chen
  • , Zhi Cheng Shi
  • , Jie Song
  • , Yan Xia
  • Fuzhou University

Research output: Contribution to journalArticlepeer-review

Abstract

Based on shortcuts to adiabaticity and quantum Zeno dynamics, we present a protocol to implement quantum state transfer (QST) in a quantum spin-12 chain. In the protocol, the complex Hamiltonian of an N-site system is simplified, and a simple effective Hamiltonian is present. It is shown that only the control of the coupling strengths between the boundary spins and the bulk spins are required for QST. Numerical simulations demonstrate that the protocol possesses high efficiency and is robust against the decay and the fluctuations of the control fields. The protocol might provide an alternative choice for transferring quantum states via spin chain systems.

Original languageEnglish
Article number012333
JournalPhysical Review A
Volume97
Issue number1
DOIs
StatePublished - 25 Jan 2018

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