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Squeezed-state purification with linear optics and feedforward

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F06%3A00002607" target="_blank" >RIV/61989592:15310/06:00002607 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Squeezed-state purification with linear optics and feedforward

  • Original language description

    A scheme for optimal and deterministic linear optical purification of mixed squeezed Gaussian states is proposed and experimentally demonstrated. The scheme requires only linear optical elements and homodyne detectors, and allows the balance between purification efficacy and squeezing degradation to be controlled. One particular choice of parameters gave a tenfold reduction of the thermal noise with a corresponding squeezing degradation of only 11%. We prove optimality of the protocol, and show that itcan be used to enhance the performance of quantum informational protocols such as dense coding and entanglement generation.

  • Czech name

    Purifikace stlačených stavů pomocí lineární optiky a dopředné korekce

  • Czech description

    Navrhujeme a experimentálně demonstrujeme schéma pro optimální a deterministickou lineárně optickou purifikaci smíšených Gaussovských stavů. Schéma vyžaduje pouze lineárně optické elementy a homodynní detekci, a dovoluji dosáhnou kontrolované balance mezi účinností purikace a snížení stlačení.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BH - Optics, masers and lasers

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GP202%2F03%2FD239" target="_blank" >GP202/03/D239: Reduction of decoherence in quantum transmission and processing of information</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2006

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Physical Review Letters

  • ISSN

    0031-9007

  • e-ISSN

  • Volume of the periodical

    97

  • Issue of the periodical within the volume

    5

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    1

  • Pages from-to

  • UT code for WoS article

  • EID of the result in the Scopus database