Quantum teleportation by utilizing helical spin chains for sharing entanglement

• Published in: Quantum information processing Vol. 20; no. 2
• Main Authors: Verma, Harshit, Chotorlishvili, Levan, Berakdar, Jamal, Mishra, Sunil Kumar
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.02.2021; Springer Nature B.V
• Subjects: Accuracy; Chain entanglement; Chains; Conjugation; Data Structures and Information Theory; Electric fields; Impurities; Mathematical Physics; Multiferroic materials; Parameters; Physics; Physics and Astronomy; Quantum Computing; Quantum entanglement; Quantum Information Technology; Quantum Physics; Quantum teleportation; Spin dynamics; Spintronics; Teleportation; Helical multiferroics; Singlet fraction
• ISSN: 1570-0755; 1573-1332
• DOI: 10.1007/s11128-020-02971-4

We develop a new protocol for sharing entanglement (one ebit) between two parties using the natural dynamics of helical multiferroic spin chains. We introduce a novel kicking scheme of the electric field for enhancing the teleportation fidelity in our protocol that works in the presence of an appropriate choice of parameters. We also investigate the effect of a common spin environment causing decoherence in the entanglement sharing channel. We compare the results to that of XXZ and XX models subject to a similar entanglement sharing protocol and find that the helical multiferroic chain with the kicking scheme provides a better singlet fraction. We show that the kicking scheme in conjugation with the optimized parameters enhances the fidelity of teleportation even in the presence of impurities and/or decoherence. The advantage of the kicking scheme shown in the impurity cases is an important result to be useful in a realizable setup of helical multiferroic spin chain.