H2020Индивидуална стипендия2019–2023

IQubitNet · Integrated multi-qubit devices for scalable quantum networks

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

Период: 2019-10-07 → 2023-03-16
Финансиране от ЕС: 253 052 €
Участници: 2
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Нови дефекти в структурата на диаманта се изследват за създаване на малки устройства с множество квантови памети. Те могат да помогнат за изграждането на мащабируеми квантови мрежи за по-бърза комуникация и по-сигурен трансфер на данни.

Този кратък обзор е генериран от изкуствен интелект

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

Резултати накратко

Integrated multi-qubit devices for scalable quantum networks

The rules of quantum mechanics enable fundamentally new applications that would be impossible in a world governed by classical physics: quantum computers hold the promise to solve classically intractable problems, quantum communication can achieve unconditionally secure communication, and quantum metrology enables measurements beyond the limits of classical laws. A long-sought goal for extending the reach of quantum technologies across the globe is to realize a quantum network for the distribution of entanglement between multiple distant parties. Groundbreaking demonstrations have been possible thanks to optically active solid-state spin systems, providing the possibility to interconnect long-lived quantum memories, in the form of electron and nuclear spins, via traveling single photons, which are ideal long-distance information carriers. The big challenge today concerns the scaling of proof-of-concept demonstrations into practical applications. With the project “Integrated multi-qubit devices for scalable quantum networks” we aim at investigating the optical and spin properties of novel color centers in diamond, which could provide performances beyond what offered by established qubit systems, such as higher operating temperatures and faster optical communication rates. Furthermore, we will investigate the use of diamond photonic nanostructures and photonic integrated circuits. By taking advantage of the scalability of modern nanofabrication processes, it will be possible to integrate on a single device a large number of quantum memories, where they can be individually and precisely manipulated by integrated electronics and photonics circuits. The capabilities of these devices will then be tested by implementing quantum networking protocols. A successful project will make diamond-based quantum communication devices compatible with existing information and communication technologies, opening the way for their deployment in real-world applications.

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

Цел на проекта

The rapidly advancing field of quantum technologies promises to solve important problems in computation, communication and metrology. A long-sought goal is the realization of quantum networks to distribute entanglement to long distance nodes. Such a network could enable the implementation of distributed quantum computing, unconditionally secure communication, ultra-precise distributed clocks, and precision sensors such as ultra-long-baseline interferometers. While ground-breaking demonstrations have been reported using NV centers in diamond, scaling up the performance and range will require key advances in suppressing photon loss, extending decoherence, and multiplexing and packaging deployable quantum repeater nodes.In this project, we propose to investigate the promising spin and optical properties of Group-IV color centers in diamond coupled to nanocavity interfaces, and to scale these Cavity-QED systems to multiple quantum memories individually addressable on photonic integrated circuits (PICs). The multiplexed quantum repeater devices that we propose will combine highly efficient optical interfaces with logical qubit of extended coherence. Moreover, these repeater nodes can be efficiently connected over long distance through existing metropolitan-scale fiber networks by quantum frequency conversion to the telecom band. As a specific goal, we aim to demonstrate that such quantum repeaters will be able to beat the rate-loss scaling of repeaterless (memoryless) quantum links, enabling a new generation of multi-node quantum networking application.

Оригинален текст от CORDIS (на английски).

Участници

TECHNISCHE UNIVERSITEIT DELFT · DelftКоординаторНидерландия
MASSACHUSETTS INSTITUTE OF TECHNOLOGY · CambridgeСъединени щати