H2020Индивидуална стипендия2018–2020

SPIRAL · Single Photons from Isotopically-pure Rubidium Atoms in a Long fibre

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2018-07-01 → 2020-02-29
Финансиране от ЕС: 132 884 €
Участници: 1
Схема: MSCA-IF-EF-ST

Линиите свързват координатора с партньорите.

Накратко на български

Специални оптични влакна и атоми на рубидий се изследват за по-ефективно генериране на единични фотони чрез четиривълново смесване. Това помага за подобряване на работата на бъдещи квантови компютри, сензори и системи за комуникация.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Single Photons from Isotopically-pure Rubidium Atoms in a Long fibre

Quantum technology is set to revolutionise communication, computing, and sensing. Many upcoming technologies will require single-photon sources. When compatible with atomic systems these single-photon sources may open the door to many possibilities both for fundamental research but also for quantum technology. However, many atomic compatible single-photon sources previously developed lack the efficiency required to make them practical for quantum technology. The aim of this project was to take the first steps in boosting the efficiency for an atomic based single-photon source. The projects main goals were to investigate the possibility of using a new class of optical fibre, namely hollow-core photonic crystal fibres, to more efficiently generate light via so called “four-wave mixing”. Furthermore, complications in filtering the photons mean that another major goal of the project was to investigate a possible enabling technology, the so-called atomic Faraday dichroic beam splitter.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Single photon sources are essential for applications of quantum optics. For optical quantum computing the process is probabilistic and so the larger the number of photons the less time required for success. Therefore, there has been a push to increase the brightness of single photons sources. This goal of this action is to develop a source of heralded single photons with a very high spectral brightness, based on four-wave mixing in an alkali-vapour contained in a hollow core photoniccrystal fibre. This will exploit the higher efficiency expected from using a hollow core fibre to boost the brightness of the single-photon source. Also, by using optical fibre technology, this photon source should be very simple to integrate into other systems. Once the photon pairs are generated, the major challenge of this system will be to split them from themselves, as well as removing the vast number of remaining pump photons. Since all three wavelengths of the light emerging from thefibre are very close to each other, and the beams are spatially overlapped, many common techniques (such as using interference filters and/or spatial filtering) will not work. However, we have identified a scheme using an atomic Faraday filter which will allow a beam splitter to be formed for the photon pairs, whilst simultaneously removing the pump photons.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSITY OF STUTTGART · StuttgartКоординаторГермания