International Journal of Theoretical Physics 60, 47-62 (2021)

ISSN: 0020-7748, SCIE

Two-Way Remote Preparations of Inequivalent Quantum States Under a Common Control

Nguyen Ba An, Binayak S. Choudhury, Soumen Samanta

In this paper we design a deterministic controllable quantum communication protocol for remotely preparing three-qubit GHZ-type and four-qubit W-type entangled states at two different locations at the same time. Two parties (the preparers) along with a third party (the controller) are connected through a proper multipartite entangled resource. The states to be prepared are not physically available, only the classical information of each state is known by a party who intends to remotely prepare it at the end of the other party under the same control of a third party. Concretely, it is a multi-tasking protocol in which remote preparations of the two inequivalent states are accomplished not only simultaneously but also controllably through execution of a single protocol by utilizing an eleven-qubit entangled state as shared quantum resource. We also propose a generation process of the multipartite quantum resource used.

URL: https://doi.org/10.1007/s10773-020-04657-0

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