Quantifying Quantum Correlation of Quasi-Werner State and Probing Its Suitability for Quantum Teleportation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F21%3A73608227" target="_blank" >RIV/61989592:15310/21:73608227 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202100201" target="_blank" >https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202100201</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/andp.202100201" target="_blank" >10.1002/andp.202100201</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quantifying Quantum Correlation of Quasi-Werner State and Probing Its Suitability for Quantum Teleportation

Popis výsledku v původním jazyce

The significance of photon addition in engineering the single- and two-mode (bipartite correlations) nonclassical properties of a quantum state is investigated. Specifically, the behavior of the Wigner function of two quasi-Werner states constructed by superposing two normalized bipartite m-photon added coherent states are analyzed. This allows the authors&apos; to quantify the nonclassicality present in the quantum states using Wigner logarithmic negativity (WLN), while quantum correlations are measured using concurrence, entanglement of formation, and quantum discord. The WLN for a two-mode state corresponds to the sum of the single-mode nonclassicality and quantum correlations, and both of these are observed to enhance with photon addition manifesting the efficacy of photon addition in the entanglement distillation. Usefulness of photon addition is further established by showing that the performance of the quasi-Werner states as quantum channel for the teleportation of single-mode coherent and squeezed states, as quantified via teleportation fidelity, improves with the photon addition. The non-Gaussian operation is shown effective in stalling the detrimental effects of transmission through noisy channel and/or inefficient detection under realistic scenario. Further, in contrast to a set of existing results, it is established that the negative values of two-mode Wigner function is not a witness of quantum correlation.

Název v anglickém jazyce

Quantifying Quantum Correlation of Quasi-Werner State and Probing Its Suitability for Quantum Teleportation

Popis výsledku anglicky

The significance of photon addition in engineering the single- and two-mode (bipartite correlations) nonclassical properties of a quantum state is investigated. Specifically, the behavior of the Wigner function of two quasi-Werner states constructed by superposing two normalized bipartite m-photon added coherent states are analyzed. This allows the authors&apos; to quantify the nonclassicality present in the quantum states using Wigner logarithmic negativity (WLN), while quantum correlations are measured using concurrence, entanglement of formation, and quantum discord. The WLN for a two-mode state corresponds to the sum of the single-mode nonclassicality and quantum correlations, and both of these are observed to enhance with photon addition manifesting the efficacy of photon addition in the entanglement distillation. Usefulness of photon addition is further established by showing that the performance of the quasi-Werner states as quantum channel for the teleportation of single-mode coherent and squeezed states, as quantified via teleportation fidelity, improves with the photon addition. The non-Gaussian operation is shown effective in stalling the detrimental effects of transmission through noisy channel and/or inefficient detection under realistic scenario. Further, in contrast to a set of existing results, it is established that the negative values of two-mode Wigner function is not a witness of quantum correlation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ANNALEN DER PHYSIK

ISSN

0003-3804

e-ISSN

—

Svazek periodika

533

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

12

Strana od-do

"2100201-1"-"2100201-12"

Kód UT WoS článku

000669432800001

EID výsledku v databázi Scopus

2-s2.0-85109150020