| Issue |
EPL
Volume 119, Number 3, August 2017
|
|
|---|---|---|
| Article Number | 30001 | |
| Number of page(s) | 7 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/119/30001 | |
| Published online | 16 October 2017 | |
Qubit(s) transfer in helical spin chains
1 Department of Physics, Indian Institute of Technology (Banaras Hindu University) - Varanasi, 221005, India
2 Institut für Physik, Martin-Luther-Universität Halle-Wittenberg - D-06099 Halle, Germany
Received: 31 July 2017
Accepted: 12 September 2017
Qubit(s) transfer through a helical chain is studied. We consider the transfer of a single state and Bell states across a multiferroic spin chain and the possibility of an electric-field control of the fidelity of the single state and the Bell pairs. We analyze pure and imperfect multiferroic spin chains. A scheme for an efficient transfer of spin states through a multiferroic channel relies on kicking by appropriate electric-field pulses at regular intervals. This electric-field pulse sequence undermines the effect of impurity on the fidelity and improves the state transfer through the helical chain.
PACS: 03.67.Hk – Quantum communication / 75.85.+t – Magnetoelectric effects, multiferroics / 75.10.Pq – Spin chain models
© EPLA, 2017
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