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Feedforward-enhanced Fock state conversion with linear optics

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73600830" target="_blank" >RIV/61989592:15310/20:73600830 - isvavai.cz</a>

  • Result on the web

    <a href="https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-28-8-11634&id=429762" target="_blank" >https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-28-8-11634&id=429762</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1364/OE.385609" target="_blank" >10.1364/OE.385609</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Feedforward-enhanced Fock state conversion with linear optics

  • Original language description

    Engineering quantum states of light represents a crucial task in the vast majority of photonic quantum technology applications. Direct manipulation of the number of photons in the light signal, such as single-photon subtraction and addition, proved to be an efficient strategy for the task. Here we propose an adaptive multi-photon subtraction scheme where a particular subtraction task is conditioned by all previous subtraction events in order to maximize the probability of successful subtraction. We theoretically illustrate this technique on the model example of conversion of Fock states via photon subtraction. We also experimentally demonstrate the core building block of the proposal by implementing a feedforward-assisted conversion of two-photon state to a single-photon state. Our experiment combines two elementary photon subtraction blocks where the splitting ratio of the second subtraction beam splitter is affected by the measurement result from the first subtraction block in real time using an ultra-fast feedforward loop. The reported optimized photon subtraction scheme applies to a broad range of photonic states, including highly nonclassical Fock states and squeezed light, advancing the photonic quantum toolbox.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10306 - Optics (including laser optics and quantum optics)

Result continuities

  • Project

    <a href="/en/project/GA19-19189S" target="_blank" >GA19-19189S: Photonic simulators of quantum thermodynamic systems</a><br>

  • Continuities

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

Others

  • Publication year

    2020

  • 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

  • Volume of the periodical

    28

  • Issue of the periodical within the volume

    8

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    11

  • Pages from-to

    11634-11644

  • UT code for WoS article

    000526518300075

  • EID of the result in the Scopus database

    2-s2.0-85083331877