- Efficient amplification of photonic qubits by optimal quantum cloning
Number of the records: 1  

Efficient amplification of photonic qubits by optimal quantum cloning

  1. 1.
    SYSNO ASEP0436684
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleEfficient amplification of photonic qubits by optimal quantum cloning
    Author(s) Bartkiewicz, K. (PL)
    Černoch, A. (CZ)
    Lemr, K. (CZ)
    Soubusta, Jan (FZU-D) RID, ORCID
    Stobińska, M. (PL)
    Source TitlePhysical Review A. - : American Physical Society - ISSN 1050-2947
    Roč. 89, č. 6 (2014), "062322-1"-"062322-10"
    Number of pages10 s.
    Languageeng - English
    CountryUS - United States
    Keywordsoptimal quantum cloning ; cryptography ; qubit ; phase-independent quantum amplifier
    Subject RIVBH - Optics, Masers, Lasers
    Institutional supportFZU-D - RVO:68378271
    UT WOS000338363700007
    EID SCOPUS84903540051
    DOI https://doi.org/10.1103/PhysRevA.89.062322
    AnnotationWe demonstrate that a phase-independent quantum amplifier of a polarization qubit is a complementary amplifier of the heralded qubit amplifier [N. Gisin, S. Pironio, and N. Sangouard, Phys. Rev. Lett. 105, 070501 (2010)]. It employs the multifunctional cloner in the 1 -> 2 copying regime, capable of providing approximate copies of qubits given by various probability distributions, and is optimized for distributions with axial symmetry. Direct applications of the proposed solution are possible in quantum technologies, doubling the range where quantum information is coherently broadcast. It also outperforms natural nonlinear amplifiers that use stimulated emission in bulk nonlinear materials. We consider the amplifier to be an important tool for amplifying quantum information sent via quantum channels with phase-independent damping.
    WorkplaceInstitute of Physics
    ContactKristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
    Year of Publishing2015
Number of the records: 1  

  This site uses cookies to make them easier to browse. Learn more about how we use cookies.