English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

Quantum teleportation is one of the most important techniques for quantuminformation secure transmission. Using preshared entanglement, quantumteleportation is designed as a basic key in many quantum information tasks andfeatures prominently in quantum technologies, especially in quantumcommunication. In this work, we provide a new probabilistic teleportationscheme for arbitrary superposed coherent states by employing the multipartiteeven and odd $j$-spin coherent states as the entangled resource connectingAlice (sender) and Bob (receiver). Here, Alice possesses both even and odd spincoherent states and makes repeated GHZ states measurements (GHZSMs) on the pairof spins, consisting of ($1$) the unknown spin state and ($2$) one of the twocoherent spin states, taken alternately, until reaching a quantum teleportationwith maximal average fidelity. We provide the relationship between theentanglement amount of the shared state, quantified by the concurrence, withthe teleportation fidelity and the success probability of the teleported targetstate up to the $n^{\rm th}$ repeated attempt. In this scheme, we show that theperfect quantum teleportation can be done even with a non-maximally entangledstate. Furthermore, this repeated GHZSMs attempt process significantlyincreases both the average fidelity of the teleported state and the probabilityof a successful run of the probabilistic protocol. Also on our results, we showthat the $j$-spin number, the target state parameter and the overlap betweencoherent states provide important additional control parameters that can beadjusted to maximize the teleportation efficiency.

Improving the probabilistic quantum teleportation efficiency of  arbitrary superposed coherent state using multipartite even and odd j-spin  coherent states as resource