Analysis of continuous-variable quantum teleportation enhanced by measurement-based noiseless quantum amplification
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F24%3A73621945" target="_blank" >RIV/61989592:15310/24:73621945 - isvavai.cz</a>
Result on the web
<a href="https://opg.optica.org/oe/fulltext.cfm?uri=oe-32-2-2527&id=545493" target="_blank" >https://opg.optica.org/oe/fulltext.cfm?uri=oe-32-2-2527&id=545493</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1364/OE.506757" target="_blank" >10.1364/OE.506757</a>
Alternative languages
Result language
angličtina
Original language name
Analysis of continuous-variable quantum teleportation enhanced by measurement-based noiseless quantum amplification
Original language description
Continuous-variable quantum teleportation enables deterministic teleportation of quantum states of optical modes. However, the state transfer is imperfect and limited by the amount of squeezing in the shared two-mode entangled state. Recently, it has been proposed and experimentally demonstrated that the performance of continuous-variable teleportation can be conditionally improved using a measurement-based noiseless quantum amplification [J. Zhao et al., Nat. Commun. 14, 4745 (2023) [CrossRef] ]. An inverse Gaussian filter with sufficiently high cut-off is applied to outcomes of the continuous-variable Bell measurement, which can increase the fidelity of state teleportation and the cost of making the protocol probabilistic. Here we provide a detailed theoretical analysis of this protocol and discuss its effects and limitations. We focus on teleportation of classes of Gaussian states with fixed covariance matrix and variable displacement. The measurement-based noiseless amplification conditionally improves the precision of estimation of the coherent displacement of the teleported state from the outcomes of continuous-variable Bell measurement. Therefore, more information about the teleported state is revealed and unity-gain teleportation becomes possible with a lower added thermal noise as compared to deterministic teleportation.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
<a href="/en/project/GA21-23120S" target="_blank" >GA21-23120S: Quantum filters for engineering optical quantum states and operations</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
OPTICS EXPRESS
ISSN
1094-4087
e-ISSN
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Volume of the periodical
32
Issue of the periodical within the volume
2
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
2527-2538
UT code for WoS article
001174875400006
EID of the result in the Scopus database
2-s2.0-85182524240