Fully funable and switchable coupler for photon routing in quantum detection and modulation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73597124" target="_blank" >RIV/61989592:15310/19:73597124 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.osapublishing.org/ol/fulltext.cfm?uri=ol-44-23-5844&id=423697" target="_blank" >https://www.osapublishing.org/ol/fulltext.cfm?uri=ol-44-23-5844&id=423697</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1364/OL.44.005844" target="_blank" >10.1364/OL.44.005844</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fully funable and switchable coupler for photon routing in quantum detection and modulation

Popis výsledku v původním jazyce

Photonic routing is a key building block of many optical applications challenging its development. We report a 2 x 2 photonic coupler with a splitting ratio switchable by a low-voltage electronic signal with 10 GHz bandwidth and tens of nanoseconds latency. The coupler can operate at any splitting ratio ranging from 0:100 to 100:0 with the extinction ratio of 26 dB in optical bandwidth of 1.3 THz. We show sub-nanosecond switching between arbitrary coupling regimes including a balanced 50:50 beam splitter, 0:100 switch, and a photonic tap. The core of the device is based on a Mach-Zehnder interferometer in a dual-wavelength configuration allowing real-time phase lock with long-term sub-degree stability at single-photon level. Using the reported coupler, we demonstrate for the first time, to the best of our knowledge, a perfectly balanced time-multiplexed device for photon-number-resolving detectors and also the active preparation of a photonic temporal qudit state up to four time bins. Verified long-term stable operation of the coupler at the single-photon level makes it suitable for a wide application range in quantum information processing and quantum optics in general.

Název v anglickém jazyce

Fully funable and switchable coupler for photon routing in quantum detection and modulation

Popis výsledku anglicky

Photonic routing is a key building block of many optical applications challenging its development. We report a 2 x 2 photonic coupler with a splitting ratio switchable by a low-voltage electronic signal with 10 GHz bandwidth and tens of nanoseconds latency. The coupler can operate at any splitting ratio ranging from 0:100 to 100:0 with the extinction ratio of 26 dB in optical bandwidth of 1.3 THz. We show sub-nanosecond switching between arbitrary coupling regimes including a balanced 50:50 beam splitter, 0:100 switch, and a photonic tap. The core of the device is based on a Mach-Zehnder interferometer in a dual-wavelength configuration allowing real-time phase lock with long-term sub-degree stability at single-photon level. Using the reported coupler, we demonstrate for the first time, to the best of our knowledge, a perfectly balanced time-multiplexed device for photon-number-resolving detectors and also the active preparation of a photonic temporal qudit state up to four time bins. Verified long-term stable operation of the coupler at the single-photon level makes it suitable for a wide application range in quantum information processing and quantum optics in general.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

OPTICS LETTERS

ISSN

0146-9592

e-ISSN

—

Svazek periodika

44

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

4

Strana od-do

5844-5847

Kód UT WoS článku

000499141000051

EID výsledku v databázi Scopus

2-s2.0-85075802072