Effect of noisy environment on secure quantum teleportation of unimodal Gaussian states

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F24%3A00599894" target="_blank" >RIV/61388955:_____/24:00599894 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/24:73626106

Výsledek na webu

<a href="https://hdl.handle.net/11104/0357316" target="_blank" >https://hdl.handle.net/11104/0357316</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11128-024-04545-0" target="_blank" >10.1007/s11128-024-04545-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of noisy environment on secure quantum teleportation of unimodal Gaussian states

Popis výsledku v původním jazyce

Quantum networks rely on quantum teleportation, a process where an unknown quantum state is transmitted between sender and receiver via entangled states and classical communication. In our study, we utilize a continuous variable two-mode squeezed vacuum state as the primary resource for quantum teleportation, shared by Alice and Bob, while exposed to a squeezed thermal environment. Secure quantum teleportation necessitates a teleportation fidelity exceeding 2/3 and the establishment of two-way steering of the resource state. We investigate the temporal evolution of steering and teleportation fidelity to determine critical parameter values for secure quantum teleportation of a coherent Gaussian state. Our findings reveal constraints imposed by temperature, dissipation rate, and squeezing parameters of the squeezed thermal reservoir on the duration of secure quantum teleportation. Intriguingly, we demonstrate that increasing the squeezing parameter of the initial state effectively extends the temporal window for a successful secure quantum teleportation.

Název v anglickém jazyce

Effect of noisy environment on secure quantum teleportation of unimodal Gaussian states

Popis výsledku anglicky

Quantum networks rely on quantum teleportation, a process where an unknown quantum state is transmitted between sender and receiver via entangled states and classical communication. In our study, we utilize a continuous variable two-mode squeezed vacuum state as the primary resource for quantum teleportation, shared by Alice and Bob, while exposed to a squeezed thermal environment. Secure quantum teleportation necessitates a teleportation fidelity exceeding 2/3 and the establishment of two-way steering of the resource state. We investigate the temporal evolution of steering and teleportation fidelity to determine critical parameter values for secure quantum teleportation of a coherent Gaussian state. Our findings reveal constraints imposed by temperature, dissipation rate, and squeezing parameters of the squeezed thermal reservoir on the duration of secure quantum teleportation. Intriguingly, we demonstrate that increasing the squeezing parameter of the initial state effectively extends the temporal window for a successful secure quantum teleportation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Quantum Information Processing

ISSN

1570-0755

e-ISSN

1573-1332

Svazek periodika

23

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

343

Kód UT WoS článku

001329379600001

EID výsledku v databázi Scopus

2-s2.0-85206269139