Analysis of counting measurements on narrowband frequency up-converted single photons and the influence of heralding detector dead time

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F15%3A33154720" target="_blank" >RIV/61989592:15310/15:33154720 - isvavai.cz</a>

Výsledek na webu

<a href="http://journals.aps.org/pra/abstract/10.1103/PhysRevA.91.013829#fulltext" target="_blank" >http://journals.aps.org/pra/abstract/10.1103/PhysRevA.91.013829#fulltext</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevA.91.013829" target="_blank" >10.1103/PhysRevA.91.013829</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Analysis of counting measurements on narrowband frequency up-converted single photons and the influence of heralding detector dead time

Popis výsledku v původním jazyce

We present a theoretical model of photon counting measurements on conditionally generated narrowband single-photon states that are produced via cavity-enhanced spontaneous parametric down-conversion, then frequency up-converted from the telecom wavelength of 1550 nm to the visible wavelength of 532 nm. The highly nonclassical character of the up-converted states is certified by a quantum non-Gaussianity witness that is determined from coincidence measurements with single-photon detectors in a Hanbury-Brown-Twiss configuration. We find our model in good agreement with the experimental data, and we investigate a useful effect caused by the dead time of the trigger detector, whose clicks herald conditional preparation of the single-photon state. Due to the dead time, a click of the trigger detector excludes the possibility of a trigger event at a certain preceding time interval, during which the measured idler beam is thus projected onto a vacuum state. Due to quantum correlations between

Název v anglickém jazyce

Analysis of counting measurements on narrowband frequency up-converted single photons and the influence of heralding detector dead time

Popis výsledku anglicky

We present a theoretical model of photon counting measurements on conditionally generated narrowband single-photon states that are produced via cavity-enhanced spontaneous parametric down-conversion, then frequency up-converted from the telecom wavelength of 1550 nm to the visible wavelength of 532 nm. The highly nonclassical character of the up-converted states is certified by a quantum non-Gaussianity witness that is determined from coincidence measurements with single-photon detectors in a Hanbury-Brown-Twiss configuration. We find our model in good agreement with the experimental data, and we investigate a useful effect caused by the dead time of the trigger detector, whose clicks herald conditional preparation of the single-photon state. Due to the dead time, a click of the trigger detector excludes the possibility of a trigger event at a certain preceding time interval, during which the measured idler beam is thus projected onto a vacuum state. Due to quantum correlations between

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

<a href="/cs/project/7E13032" target="_blank" >7E13032: Bright Squeezed Vacuum and its Applications</a><br>

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Physical Review A

ISSN

1050-2947

e-ISSN

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Svazek periodika

91

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

"013829-1"-"013829-10"

Kód UT WoS článku

000348325700021

EID výsledku v databázi Scopus

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